{"product_id":"fleece-coolant-bypass-kit-fpe-clntbyps-cummins-0712-2007-5-2012-6-7l-cummins","title":"FLEECE COOLANT BYPASS KIT FPE-CLNTBYPS-CUMMINS-0712 | 2007.5-2012 6.7L CUMMINS","description":"\u003cp\u003eImprove coolant circulation and maintain more consistent cylinder temperatures in your 2007.5–2012 Dodge\/Ram 6.7L Cummins with the Fleece Performance FPE-CLNTBYPS-0712 Coolant Bypass Kit. Designed to address reduced coolant flow through the rear of the engine, this system helps lower rear-cylinder coolant temperatures and reduce excessive cooling-system pressure.\u003c\/p\u003e\n\u003cp\u003eThe rear cylinders of the 6.7L Cummins can experience higher coolant temperatures due to limited coolant flow through the back of the engine. This temperature increase can contribute to excessive pressure at the rear of the block and increase the risk of freeze plug failure.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass Kit incorporates a \u003cstrong\u003esecondary thermostat\u003c\/strong\u003e that regulates additional coolant flow based on temperature rather than excessive cooling-system pressure. This helps maintain more consistent temperatures across all six cylinders while reducing pressure buildup at the rear of the engine.\u003c\/p\u003e\n\u003cp\u003eDesigned for an OEM-style fit and finish, the complete kit includes front and rear coolant bypass thermostat housings, braided black nylon coolant hose, -AN fittings, mounting hardware, and the components required to accommodate the exhaust back pressure sensor system.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved rear-cylinder coolant flow\u003c\/strong\u003e – Helps lower coolant temperatures at the rear of the engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature-activated bypass\u003c\/strong\u003e – Secondary thermostat regulates coolant flow based on temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore consistent cylinder temperatures\u003c\/strong\u003e – Helps equalize coolant temperatures across all six cylinders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces pressure buildup\u003c\/strong\u003e – Helps prevent excessive cooling-system pressure at the rear of the block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-style integration\u003c\/strong\u003e – Designed for clean fitment with the factory engine configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBraided coolant hose\u003c\/strong\u003e – Includes black braided nylon hose with a protective sleeve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-AN O-ring fittings\u003c\/strong\u003e – Provides secure, leak-resistant coolant connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-year limited warranty\u003c\/strong\u003e – Covered according to current Fleece Performance warranty terms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRear Coolant Bypass Thermostat Housing\u003c\/li\u003e\n\u003cli\u003eFront Coolant Bypass Thermostat Housing\u003c\/li\u003e\n\u003cli\u003eBlack Braided Nylon Coolant Bypass Hose with Protective Sleeve\u003c\/li\u003e\n\u003cli\u003e-AN Fittings\u003c\/li\u003e\n\u003cli\u003eExhaust Back Pressure Sensor Mounting Block\u003c\/li\u003e\n\u003cli\u003eExhaust Back Pressure Sensor Line\u003c\/li\u003e\n\u003cli\u003eNew EGR Cross-Over Tube Gaskets\u003c\/li\u003e\n\u003cli\u003eMounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to improve coolant circulation through the rear cylinders of the 6.7L Cummins.\u003c\/li\u003e\n\u003cli\u003eVerify all fittings, hoses, and sealing surfaces during installation to ensure proper cooling-system operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 2007.5–2012 Dodge\/Ram 6.7L Cummins\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FPE-CLNTBYPS-CUMMINS-0712\u003c\/p\u003e","brand":"WWM Performance","offers":[{"title":"Default Title","offer_id":54105266389275,"sku":"FPE-CLNTBYPS-CUMMINS-0712","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-10-05at11.23.45AM.png?v=1791221054","url":"https:\/\/wwmperformance.com\/products\/fleece-coolant-bypass-kit-fpe-clntbyps-cummins-0712-2007-5-2012-6-7l-cummins","provider":"WWM Performance","version":"1.0","type":"link"}