SKU: 501952617

2007-2012 Ram HD Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L (FPE-CLNTBYPS-CUMMINS-0712)

Sale price$261.00 Regular price$290.00
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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For Your Every Summer RSVP, with Code: SUMMER15

Description

2007-2012 Ram HD Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L (FPE-CLNTBYPS-CUMMINS-0712)The Fleece Performance Coolant Bypass Kit for 2007 2012 RAM with 6. 7L Cummins is built to OEM or better standards for diesel truck owners who want a no compromise upgrade. Engineered, manufactured, and supported by Fleece the diesel performance specialists. Features 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

The Fleece Performance Coolant Bypass Kit for 2007-2012 RAM with 6.7L Cummins is built to OEM-or-better standards for diesel truck owners who want a no-compromise upgrade. Engineered, manufactured, and supported by Fleece - the diesel performance specialists.

Features
  • 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.
  • 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
Specifications
  • Material: Braided Nylon
  • Finish: Bare
  • Engine: 6.7L Cummins
  • Country of Origin: US
  • Warranty: 1 Year Limited Warranty
Manufacturer Description

The Fleece Performance coolant bypass for the 2007-2012 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.

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: 501952617

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4.1 ★★★★★
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I
Interesting Username
Bozeman, US
★★★★★ 5
Elegant and Comfortable.
Size: X-Large, Color: Light Beige
When I received this shirt, it looked wayyyy bigger than it actually is, due to the way it is cut. The drawstring in the waist of the shirt is extended to the maximum when you get it, so it makes the shirt look extra wide. But naturally, when you pull the top on and cinch the waist, the whole look comes together. So make sure to order your actual size! Don't be fooled by what you see when you open the packet! There's some obvious texture from the horizontal weave in the linen, but the fabric is very soft. The inner label says this shirt is 55% linen and 45% cotton and honestly? It shows. It has a high amount of breathability without the shirt feeling flimsy. There's a slight amount of stretch, but it's not elastic. It doesn't feel cheap at all. This would feel good to wear in an indoor and outdoor environment. Paired with a camisole, I feel like you could dress this up or down. The one drawback of it being natural fibers is that it has a tendency to wrinkle. But that's honestly fine for me. I have an iron and I don't mind using it. lol 5 stars! Recommended.
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Reviewed in the United States on May 13, 2026
A
Amazon Customer
Dallas, US
★★★★★ 5
Impressive quality with a high end look and feel
Size: Large, Color: Light Beige
This Amazon Essentials linen blend shirt is beautiful. The quality is on par with high end brand tops that I have, and it does not disappoint. The light beige color is flattering and very versatile. The quality of the material and stitching is top notch. The fabric of the shirt is 55% linen and 45% cotton which is fantastic for the warmer months. The breathability and comfort are unsurpassed. The top washes well in a cold cycle, and I hang it to dry. I find that steaming the shirt after it dries takes out any wrinkles and really softens the fabric. The size chart is accurate for a relaxed look as described, but if you prefer a more fitted look you may want to size down. The drawstring waist gives the top a fun and flattering peplum look with a beautiful drape to it. Overall, I am thrilled with this shirt and would highly recommend. At the current price of $21.00 this is an excellent deal for a high quality top at an extremely affordable price. I just wish this came in more colors!
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Reviewed in the United States on May 12, 2026
Z
ZZBC
Boise, US
★★★★★ 3
As advertsied but not for me
Size: Small, Color: Light Beige
The shirt is exactly as advertised. I did not find it flattering on me, and likely won't be wearing it. That doesn't mean it is a bad shirt, it just isn't the right one for me. If you want something lightweight for summer and like this shirt style, this may be a good choice. Otherwise, find something you like more.
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Reviewed in the United States on May 24, 2026
M
Mariah
Houston, US
★★★★★ 5
Relaxed Fit Linen Blend Button Down Shirt
Size: Large, Color: Light Beige, Size: Large, Color: Light Beige
I like this shirt and it actually looks better than it does in the attached photo. The shirt is 55% linen and I took the photo without ironing because I wanted to show that this shirt is better than many linen shirts when it comes to wrinkles. In fact, I can steam the wrinkles out and don’t need to drag out the iron. The shirt is cool and comfortable. I like that you can use the draw string waist to make it more fitted. The button holes are a little small, which makes it harder for those of us who have arthritis to use. I will just leave most of the buttons fastened and slip the shirt over my head. It seems very well made. I looked it over carefully and did not find any loose threads or missed stitches. I think this is a good value.
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Reviewed in the United States on May 28, 2026
A
awesome
Bozeman, US
★★★★★ 5
Cute summer top
Size: Large, Color: Light Beige, Size: Large, Color: Light Beige
Cute and comfortable linen blend shirt that’s perfect for summer. The fit is relaxed without looking oversized or sloppy, which I really like. I usually wear between a large and extra large depending on the chest area, and I ordered the large based on the size chart. It fit correctly according to the measurements, but I personally think the extra large may have been a little more comfortable for me through the bust. For reference, I’m around a 33-inch waist and a 42C bust. The light beige color is really pretty and easy to style with denim jeans, jean skirts, or sandals for a casual summer look. Since it’s a lighter-colored cotton-linen blend, you’ll want to wear the proper undergarments underneath depending on your skin tone, which is pretty normal for linen-style fabrics. I also love the adjustable cinched waist because it gives the shirt a more flattering shape without making it tight. Overall, it’s a beautiful lightweight top with a nice relaxed fit, and I definitely recommend it.
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Reviewed in the United States on May 16, 2026

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