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SKU #: FPE-CLNTBYPS-CUMMINS-19
MPN #: FPE-CLNTBYPS-CUMMINS-19
Fleece Performance Coolant Bypass Kit 19-24 Ram 6.7L Cummins
Description
Heat is the number one killer for most engines. This is especially true with the 6.7L Cummins. The rear cylinders of the 6.7L Cummins suffer from a lack of coolant flow resulting in higher coolant temperatures. This can cause major problems such as excessive coolant pressure that can eventually blow out the external and internal freeze plugs in the block and head. The answer to this issue, the Fleece Coolant Bypass Kit.
The Fleece Coolant Bypass Kit adds a secondary thermostat that works based on temperature instead of pressure like other brands. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders. A unique feature that sets this kit apart is the front coolant bypass thermostat housing that incorporates a built in AN fitting instead of a coolant spacer block like other brands. This kit comes complete with black braided hose and AN O-ring fittings to ensure a leak free seal. This is one of the most important additions you make to improve the reliability and longevity your 6.7L Cummins
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FEATURES & 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
KIT CONTENTS:
- Rear coolant bypass thermostat housing
- Front coolant bypass thermostat housing
- New EGR cross-over tube gaskets
- Black braided nylon coolant bypass hose with AN fittings
- Mounting hardware
About Fleece Performance Engineering
Browse Fleece Performance Engineering Parts Online by Make, Model, and Year.
Fleece Performance Engineering is a customer-centric diesel performance company that specializes in the development and manufacturing of innovative and extremely forward-thinking products to improve upon the performance and reliability of your Cummins, Duramax, or Powerstroke. Originally operating from a shop on their family farm, they have now grown to a full-scale operation that excels in air and fuel-related components for light-duty diesel. A continuous focus on product quality and the creation of new design principles before the competition is what keeps Fleece Performance growing by leaps and bounds year after year and at the forefront of the winners circle. Many know Fleece for its line of Cheetah Turbos, PowerFlo Lift Pumps, and 10mm Stroker Pumps, but it goes far beyond! From the simple, yet widely popular exhaust manifold stud kits that eliminate the troublesome factory manifold hardware to full-blown race engines via their Freedom Racing Engines division, they are truly a "one-stop shop!" And no, Fleece isn't "just" for the hot rod diesel market, they've got kits and components for every level of diesel truck owner.
TIMELINE OF FLEECE PERFORMANCE ENGINEERING:- 2008: Fleece Performance Engineering was established in North Salem, IN by Brayden and Chase Fleece. Both had a passion for continuously innovating and improving upon products already on the market. Brayden's 2004.5 LLY Duramax became the test bed to develop the TurboBrake and Duramax Cheetah, while Chase's 2002 Cummins was one of the first Cummins pickups to integrate an Allison Transmission.
- 2012: Fleece Performance upgrades both facility and location by relocating to Nitro Alley in Brownsburg, IN situated among some of the top racing leaders in the world.
- 2014: Fleece Performance acquires the area's premier engine machine shop, Freedom Racing Engines. The acquisition enables Fleece Performance to expand the engine development program and product offerings. Today, Fleece Performance and Freedom Racing Engines build some of the most competitive engines in the industry.
- 2018: Fleece Performance breaks ground on a new 75,000 sq. ft. facililty in Pittsboro, IN.
- 2019: Fleece Performance and Freedom Racing Engines relocates to its new facility in Pittsboro, IN. The all new headquarters provides additional space for product development, production and work areas, assembly and testing, a larger warehouse, as well as four engine dynamometers, and two-story office space.
- 2020: Fleece Performance receives ISO9001:2015 Certification.
- 2021: Fleece Performance Engineering was voted as one of the Best Places to Work in Indiana by the Indiana Chamber of Commerce.
- 2022: Fleece Performance Engineering was voted again as one of the Best Places to Work in Indiana by the Indiana Chamber of Commerce.
As always, if you have any questions about which Fleece turbo, fuel, engine, or other product is right for you, do not hesitate to give us a call and we would be happy to assist.
Video
Boost It | Fleece Performance Coolant Bypass Kit
Heat is the #1 enemy of engines, especially the 6.7L Cummins. The rear cylinders suffer from poor coolant flow, leading to dangerous temperature spikes and potential engine damage. The Fleece Coolant Bypass Kit is the ultimate solution, featuring a secondary thermostat that balances temps across all cylinders, preventing pressure issues before they start. With its unique design and high-quality components, this kit is a must-have for improving the reliability and longevity of your 6.7L Cummins. Dont let heat destroy your engine—protect it with Fleece!
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Overall rating: 3.8333333 / 5 from 6 reviews.
AI Generated Review Summary
Summary topics
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Review highlights
Reviews
Almost worth it
"I have a 2020 Ram 3500 with Aisin transmission. I can’t speak for the 68RFE transmission. To add the mod Fleece instructs you to permanently remove the power flex bracket that connects the engine to the transmission. My stock powertrain combination generates more than 1000 ft lbs of torque and cummins team of engineers decided this engine transmission combo needed to have an extra 1/2” thick steel mounting bracket(power flex bracket) to keep them connected. I couldn’t comprehend how removing that bracket permanently for better engine cooling would be a good idea. It just seems like a recipe to cause failures at the input shaft that could be very costly down the road. I opted not to install until a better design is available for the Aisin. I believe the 68RFE trans does not have this bracket, The fleece bypass would be a great addition for that powertrain combo IMO."
As expected
"As expected"
Great product
"Everything needed to install included. Great product."
Nice looking product. But,
"the directions are miss leading. It shows various views of the freeze plug in the back of the block being removed. One view with head in place. Another view with head removed to install thermostat housing. Found only one video of thermostat housing install with head and transmission in place. This is not an easy install. Three shops I contacted quote over $1k to do install. Most stating that they would remove transmission to do install correctly !"
Beautiful kit
"Beautiful kit"
Q&A
- What is the opening temperature of the bypass thermostat? This is for a 2022 Ram 3500 with HO 6.7 and Aisin trans.
- Opening temperature is going to be 184 degrees.
- Does this fit on a 2024 Cummins?
- The manufacture specifies 2019-2022 if you give us a call we may be able to determine other wise. Mon-Fri 6-6 pst. 888-993-4373 Thank you.