{"title":"Coolant Bypass Kits","description":null,"products":[{"product_id":"fleece-12v-coolant-bypass-kit-1994-1998","title":"Fleece 12V Coolant Bypass Kit (1994-1998)","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler, it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 1994-1998 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-HX35-63-FMW\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47847847559317,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-12V","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-12V.jpg?v=1787852610"},{"product_id":"fleece-cummins-coolant-bypass-kit-2003-2007-manual-transmission-fpe-clntbyps-cummins-man-ss","title":"Fleece Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) - FPE-CLNTBYPS-CUMMINS-MAN-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2003-2007 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47848930312341,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-MAN-SS","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-MAN-SS.jpg?v=1787849706"},{"product_id":"fleece-coolant-bypass-kit-for-2013-2018-ram-with-6-7l-cummins","title":"Fleece Coolant Bypass Kit for 2013-2018 RAM with 6.7L Cummins","description":"\u003cp\u003eThe Fleece Performance coolant bypass for the 2013-2018 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish. Features Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need aFleece Coolant Bypass? One of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Kit Includes: Rear coolant bypass thermostat housing Front coolant bypass thermostat housing New EGR cross-over tube gaskets Black braided nylon coolant bypass hose with protective high temperature sleeve and AN fittings Mounting hardware\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2013-2018 Dodge 2500-3500 Cummins 6.7L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-351-1317\/FPE-34562\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47848940372117,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-1318","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-1318-TH1.png?v=1787871244"},{"product_id":"fleece-vp-coolant-bypass-kit-1998-5-2002","title":"Fleece VP Coolant Bypass Kit (1998.5-2002)","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler, it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 1998.5-2002 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-HX35-63-FMW\/FPE-34754\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47848944173205,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-VP","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-VP-K1.png?v=1787849707"},{"product_id":"fleece-coolant-bypass-kit-for-2019-ram-with-6-7l-cummins","title":"Fleece Coolant Bypass Kit for 2019+ Ram with 6.7L Cummins","description":"\u003cp\u003eAll new Fleece Performance coolant bypass for the 2019+ RAM with 6.7L Cummins! Our patent pending design seamlessly integrates with your truck for an OE fit-and-finish. Increased Coolant Flow, Decreased Coolant Temperatures: The rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need aFleece Coolant Bypass? One of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2019-2022 Dodge 2500-3500 Cummins 6.7L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-34562\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849005613205,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-19","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-19-T1.jpg?v=1787848663"},{"product_id":"fleece-cummins-coolant-bypass-kit-2006-2007-auto-trans-w-stainless-steel-braided-line","title":"Fleece Cummins Coolant Bypass Kit (2006-2007 Auto Trans) w\/ Stainless Steel Braided Line","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Application Notes: The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. For model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership (PN:68048997AA) to complete the installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2006-2007 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849377464469,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0607-SS","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/Coolant_bypass_backplate_2_d16c22de-43d0-4c0c-ab5b-298093ca6aee.jpg?v=1787870961"},{"product_id":"fleece-cummins-coolant-bypass-kit-2003-2005-auto-trans-w-stainless-steel-braided-line","title":"Fleece Cummins Coolant Bypass Kit (2003-2005 Auto Trans) w\/ Stainless Steel Braided Line","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Application Notes: The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. For model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership (PN:68048997AA) to complete the installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2003-2005 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849377693845,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0305-SS","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/Coolant_bypass_backplate_2_0d7c1bcb-908e-4c83-b98b-4926e5a613cf.jpg?v=1787870961"},{"product_id":"fleece-vp-coolant-bypass-kit-1998-5-2002-w-stainless-steel-braided-line","title":"Fleece VP Coolant Bypass Kit (1998.5-2002) w\/ Stainless Steel Braided Line","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Application Notes: The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. For model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership (PN:68048997AA) to complete the installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 1998.5-2002 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849551560853,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-VP-SS","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-34384-F1_728b9e41-f7a9-4bee-aaab-38ec881b76cf.png?v=1787869990"},{"product_id":"fleece-12v-coolant-bypass-kit-1994-1998-w-stainless-steel-braided-line","title":"Fleece 12V Coolant Bypass Kit (1994-1998) w\/ Stainless Steel Braided Line","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Application Notes: The 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. For model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership (PN:68048997AA) to complete the installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 1994-1998 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849558507669,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-12V-SS","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-34384-F1_1fb74312-abfb-4e49-b728-358b9ef59a8c.png?v=1787869989"},{"product_id":"fleece-coolant-bypass-kit-for-2007-5-2012-ram-with-6-7l-cummins","title":"Fleece Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins","description":"\u003cp\u003eThe Fleece Performance coolant bypass for the 2007.5-2012 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish. Features Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need aFleece Coolant Bypass? One of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. Kit Includes: Rear coolant bypass thermostat housing Front coolant bypass thermostat housing New EGR cross-over tube gaskets Braided nylon coolant bypass hose with protective high temperature sleeve and AN fittings Exhaust back pressure sensor mounting block and back pressure sensor line Mounting hardware\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2007.5-2012 Dodge 2500-3500 Cummins 6.7L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-351-0712\/FPE-34560\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849573875861,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0712","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-0712-K1.png?v=1787871282"},{"product_id":"fleece-coolant-bypass-service-kit","title":"Fleece Coolant Bypass Service Kit","description":"\u003cp\u003eComplete kit to service your Fleece Performance Coolant Bypass - Includes all O-rings, fasteners, and a new thermostat. Two thermostats included to service all production years, you will only use one (1) of the included thermostats when replacing your bypass thermostat. This kit does not include the Cummins thermostat. The kit includes 3 new square cut O-rings and 1 new standard O-ring as well as 2 new O-rings for each of AN fittings. When used with MY94 - MY2002 kits, not all O-rings will be utilized.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 1994-2018 Dodge 2500-3500 Cummins 5.9\/6.7L\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849695608981,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-SER-KIT","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/FPE-CLNTBYPS-CUMMINS-SER-KIT.jpg?v=1787871851"},{"product_id":"fleece-cummins-coolant-bypass-kit-2003-2005-auto-trans","title":"Fleece Cummins Coolant Bypass Kit (2003-2005 Auto Trans)","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler, it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2003-2005 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-351-0304\/FPE-DPK-59-0307\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849698787477,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0305","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/Coolant_bypass_backplate_2_e91a1977-0dcc-4a4a-b3e8-5c21b3df2bb2.jpg?v=1787870961"},{"product_id":"fleece-cummins-coolant-bypass-kit-2006-2007-auto-trans","title":"Fleece Cummins Coolant Bypass Kit (2006-2007 Auto Trans)","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Kits for MY 2003+ include billet hose brackets. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler, it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2006-2007 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-DPK-59-0307\/FPE-351-0407\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849699475605,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0607","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/Coolant_bypass_backplate_2_7e1be41f-dc71-4465-bbfa-1b49e7eda520.jpg?v=1787870961"},{"product_id":"fleece-cummins-coolant-bypass-kit-2003-2007-manual-transmission-fpe-clntbyps-cummins-man","title":"Fleece Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) - FPE-CLNTBYPS-CUMMINS-MAN","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. Benefits: Lowers coolant temperature at the rear cylinders Ensures consistent temperatures across all cylinders Prevents damaging coolant pressure build up Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation. Why do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e 2003-2007 Dodge 2500-3500 Cummins 5.9L\u003c\/p\u003e\u003cp\u003eRecommended Cross Sell Skus - FPE-351-0304\/FPE-CUMM-CP3-10MM-5.9\/FPE-351-0407\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":47849700360341,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-MAN","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/0585\/3077\/files\/Coolant_bypass_backplate_2_0c2fb322-bb62-485c-a41e-90ae74f93758.jpg?v=1787870962"}],"url":"https:\/\/dieselproof.com\/collections\/coolant-bypass-kits.oembed","provider":"Diesel Proof","version":"1.0","type":"link"}