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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Ron B.
Battle Creek, US
★★★★★ 1
Very disappointing workmanship. Last time.
Size: X-Large, Color: Lavender, Size: X-Large, Color: Lavender
Shirt came in actually nice day packaged. But opening it up spots all over the shirt very wheat material sending it back back.
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Reviewed in the United States on April 8, 2025
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HenryB
Carnegie, US
★★★★★ 5
High quality polo
Size: 3X-Large, Color: Dark Grey
Can’t beat this price and quality. With mainstream polos is going for about $80. This is a steal for the same quality. Fits good. Price is nice. Keeps me dry the golf course.
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Reviewed in the United States on July 22, 2025
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Bret
Cuba, US
★★★★★ 5
Awesome and comfortable jacket. Fit perfect and very warm.
Awesome and comfortable jacket. Fit perfect and very warm. The value on this is really really good. Would recommend. Easy to clean and looks beautiful.
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Reviewed in the United States on January 1, 2026
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Ryne M
Charlottesville, US
★★★★★ 4
Nice Stylish Midweight Jacket
Color: Dark Grey, Size: Medium, Color: Dark Grey, Size: Medium
I ordered this jacket because I wanted something with a little my style to wear out to dressy casual occasions. This jacket fits the bill. It looks nice in that it's got a casual laid back feel but at the same time you could wear over a collared shirt and it would look good. I am 5'10" and about 165 lbs. I normally wear somewhere between a medium and large depending on the brand. I ordered a medium and it fit well. The arms and body were both the right length, not too short like some other jackets. The reason I took 1 star off was because this is advertised as a winter puffer jacket and I wouldn't really call it that. It is a mid weight jacket that can get you by in southern winters but anything really cold I wouldn't wear this. Plus it's not a "puffer" jacket. It just has a minimal quilted feel to it but most of it is just a polyester glossy sweatshirt feel.
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Reviewed in the United States on October 29, 2025
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NorNev Reviews
Massapequa, US
★★★★★ 5
Maelreg Does It Again
Color: Dark Grey, Size: Medium
I just wrote a review for another Maelreg product. They're all good! lol 21st century fabrics are here to save us! ;) This one is also really well made. I love the fit and feel. It's perfect for those mild fall/spring days where an extra layer of windproof protection is just really handy. The arms aren't insulated, so it's great for active outdoor ventures. I use mine for jogging over a poly/blend wicking tee. It lives at the office where I sometimes need a stylish overcoat in the A/C freezing office. I bought a size M for my 5'10" 175 lb. frame and it fits perfectly. Just long enough to sit at the top of my glutes. The front of the jacket has a nice contrast/sheen that you don't see everywhere, it's a nice style addition. The poly blend fabric adds a nice degree of flex to the fit, it's comfortable under a heavy overcoat or over a light thermal layer. Super easy to launder on cold/low, and really low temp iron to rid it of those packaging wrinkles, and its easy care forever. Great product at a really nice price point, all things considered.
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Reviewed in the United States on October 23, 2025

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