Fleece Performance Coolant Bypass Kits FPE-CLNTBYPS-CUMMINS-6.7 Another product from Fleece Performance built out of necessity is the 2003-2013 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300-350hp engine. When the horsepower is increased there is an increased demand on the cooling system. The rear cylinders suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the system, especially the rear of the block and possibly blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. We?ve designed our coolant bypass kit with 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. Our kit comes with high quality AN o-ring fittings and AN hose connections with braided hose to ensure a leak free installation. Cummins Coolant Bypass Kit (2007.5-2016 6.7L) Fleece Performance 07.5-12 Dodge 6.7L Cummins Coolant Bypass Kit (07.5-15 6.7L)
Vehicle Fitments:
| Year |
Make |
Model |
Submodel |
| 2009 |
Dodge |
Ram 2500 |
Crew |
| 2008 |
Dodge |
Ram 2500 |
SLT Big Horn |
| 2007 - 2008 |
Dodge |
Ram 2500 |
SLT Sport |
| 2007 - 2010 |
Dodge |
Ram 2500 |
SLT, Power Wagon, Laramie, ST |
| 2008 - 2010 |
Dodge |
Ram 2500 |
SXT |
| 2010 |
Dodge |
Ram 2500 |
TRX |
| 2007 |
Dodge |
Ram 2500 |
TRX4, Sport |
| 2007 - 2010 |
Dodge |
Ram 3500 |
Laramie, SLT, ST |
| 2008 - 2010 |
Dodge |
Ram 3500 |
SXT |
| 2007 |
Dodge |
Ram 3500 |
TRX4, Sport |
| 2014 |
Ram |
2500 |
Laramie Limited |
| 2011 - 2014 |
Ram |
2500 |
Laramie, SLT, Laramie Longhorn, ST, Power Wagon, Outdoorsman |
| 2013 - 2014 |
Ram |
2500 |
Lone Star, Big Horn, Tradesman |
| 2012 - 2014 |
Ram |
2500 |
R/T, Hemi Sport |
| 2011 |
Ram |
2500 |
SLT Sport |
| 2011 - 2013 |
Ram |
2500 |
SXT |
| 2014 |
Ram |
3500 |
Laramie Limited |
| 2011 - 2014 |
Ram |
3500 |
Laramie, SLT, Laramie Longhorn, ST |
| 2013 - 2014 |
Ram |
3500 |
Lone Star, Big Horn, Tradesman |
| 2011 - 2013 |
Ram |
3500 |
SXT |
