{"product_id":"fleece-coolant-bypass-kit-manual-transmission-fpe-clntbyps-cummins-man","title":"Fleece Performance Coolant Bypass Kit (Manual Transmission) - 2003-2007 Dodge Ram 5.9L \u0026 2004.5-2012 6.7L Cummins (Manual)","description":"\u003cp\u003eOn the 2003-2007 Dodge Ram 5.9L \u0026amp; 2004.5-2012 6.7L Cummins (Manual), cylinders 5 and 6 get coolant last, so the back of the engine runs hotter than the front. That heat builds pressure at the rear of the block and is a known cause of blown freeze plugs, including the small ones under the valve cover. The Fleece coolant bypass gives the rear of the head a second exit through its own thermostat, so coolant keeps moving through the back of the engine and all six cylinders run closer to the same temperature.\u003c\/p\u003e\u003cp\u003eUnlike a pressure-relief bypass, the Fleece thermostat opens on temperature, so it starts working before pressure climbs. If you tow, run more power than stock, or just want your Cummins to last, this is one of the best reliability upgrades you can make.\u003c\/p\u003e\u003cp\u003eThis is the manual-transmission version. Automatic trucks use the 0305 or 0607 kits.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEvens out temperatures across all six cylinders\u003c\/li\u003e\n\u003cli\u003eHelps prevent the pressure spikes that push out freeze plugs\u003c\/li\u003e\n\u003cli\u003eAN O-ring fittings for a leak-free install\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFleece part number: FPE-CLNTBYPS-CUMMINS-MAN\u003c\/li\u003e\n\u003cli\u003eShipping weight: 5.1 lb\u003c\/li\u003e\n\u003cli\u003eUPC: 635909310419\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2003-2007 Dodge Ram 5.9L \u0026amp; 2004.5-2012 6.7L Cummins (Manual)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cp\u003eRear coolant bypass thermostat housing, bypass line with AN O-ring fittings, and mounting hardware. Kits for 2003 and newer trucks add billet hose brackets.\u003c\/p\u003e\u003ch3\u003eInstall notes\u003c\/h3\u003e\u003cp\u003eBolt-on install with hand tools. Plan on draining and refilling coolant, and bleed the air out of the system after the install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNot sure it fits your truck? Call the shop at (806) 503-2161 and we will confirm before you order.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":68039441645800,"sku":"FPE-CLNTBYPS-CUMMINS-MAN","price":379.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/3637\/6296\/files\/228fe1371e290f83a63ed6ea749dc323.jpg?v=1793190679","url":"https:\/\/bdunlimited.com\/products\/fleece-coolant-bypass-kit-manual-transmission-fpe-clntbyps-cummins-man","provider":"Black Diamond Unlimited","version":"1.0","type":"link"}