SKU: 71418593607

Fleece Performance FPE-CLNTBYPS-CUMMINS-0712 Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins Fleece Performance

Sale price$259.65 Regular price$288.50
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

Fleece Performance FPE-CLNTBYPS-CUMMINS-0712 Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins Fleece PerformanceThe 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

The 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 a Fleece 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
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71418593607

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Mostlygood
Battle Creek, US
★★★★★ 5
Excellent shoes - good fit, nice look.
Excellent shoes - great value for money! Attractive and well built. Got several unsolicited compliments from co-workers. They are stiff at first and require a bit more of a break-in period than some other shoes I have purchased lately. I hope that is a sign of durability ...
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Reviewed in the United States on February 19, 2026
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Amazon Customer
Lowell, US
★★★★★ 4
I like them
Size: 12, Color: Black Crazy Horse
Nice quality shoes. Wore them to 2 different weddings and they were comfortable and true to size
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Reviewed in the United States on March 26, 2026
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WI53GUY
Dallas, US
★★★★★ 5
Quality!
Size: 11.5, Color: Black Crazy Horse, Size: 11.5, Color: Black Crazy Horse
Stylish and most importantly they are comfortable right out of the box, no breaking in required. This is my second pair, I now own both the black and brown colors to compliment almost any outfit. Worth the price!
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Reviewed in the United States on November 17, 2025
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AllenP
Natrona Heights, US
★★★★★ 5
Absolutely comfortable.
Size: 9, Color: Brown Multi
I am always on the lookout for a professional, but very comfortable shoe (education field with a lot of walking). These Florsheims fit the bill and make me wonder why I never bought these before. Something about them just didn't "look" comfortable to me but man was I wrong. These are easily among my most comfortable work shoes with the bonus of also looking more professional. I will say they have some heft to them, so if that's a problem for you these may not be right for you. As for me, they are right as rain. I purchased the black and brown ones (with white souls) and they are at the top of my rotation now. I look forward to trying some more from Thai company.
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Reviewed in the United States on September 10, 2025
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CoreyF
Birmingham, US
★★★★★ 2
These shoes are comfortable and true to size but the shoe strings keep coming untied constantly.
Size: 10.5, Color: Cognac Tumbled
I would give it 5 stars but...
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Reviewed in the United States on February 22, 2026

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