SKU: 24339220936

2013-2018 Ram HD Coolant Bypass Kit RAM with 6.7L (FPE-CLNTBYPS-CUMMINS-1318)

Sale price$180.90 Regular price$201.00
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

2013-2018 Ram HD Coolant Bypass Kit RAM with 6.7L (FPE-CLNTBYPS-CUMMINS-1318)The Fleece Performance Coolant Bypass Kit for 2013 2018 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 2013-2018 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 2013-2018 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: 24339220936

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carrie
Lexington, US
★★★★★ 5
Great purchase. Waist is a little big but it will work well.
Color: Light Brown, Size: Small, Color: Light Brown, Size: Small
Super fast one day shipping. The quality is good and the fit is good. He is 5 foot 11 and his waist is 30 inches. He has long arms and the jacket lands perfectly at his wrist. The pants were a little large in the waist and the length is a little long.
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Reviewed in the United States on May 24, 2026
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K Rife
New York, US
★★★★★ 5
Fantastic suit, especially for the $$$!
Color: Black, Size: XX-Large
Bought this for my husband and my son to attend our daughter’s wedding as they had nothing to wear at all. I was kind of scared when I ordered 2 sets of these suits, I had read so many reviews that I was totally overwhelmed and didn’t know if I should get it or not, my head was literally spinning as the reviews were all over the place. So, we had went to Men’s Warehouse earlier in the day, so I had their suit jacket measurements, so I used those numbers, but tbh, I just went with the size that they usually get when getting clothes in general and their suits fit great! I was so relieved!! They looked so handsome oh my goodness! These suits fit the way that they are advertised to fit, which is “slim fit” which means they fit like a glove! Slim fit does not mean “too small” it means that these suits are not baggy or oversized, they fit the body just right! They were not wrinkly when taken out of the package, they were very nice quality, the pants were made with a nice material, they did not feel cheap at all. Everything was great!! I was so impressed with everything! I could not believe that I got both my husband and my son a 3 piece suit for less than $100 each! Both of them said that their suits were extremely comfortable and they had no problem wearing them all night. You could tell by their faces that they felt confident in them, and they knew they looked good. Very happy customer!!
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Reviewed in the United States on April 3, 2026
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Amazon Customer
Carnegie, US
★★★★★ 4
Nice suit
Color: Blue, Size: X-Large
Believe it or not it’s a pretty nice suit well made and fits perfectly
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Reviewed in the United States on May 28, 2026
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bobbien333
Waukegan, US
★★★★★ 5
Better than expected
Color: Black, Size: X-Large, Color: Black, Size: X-Large
I took a chance hoping for the best and the three piece set was better than expected and WAY more affordable than renting one. Fit my son well, who is about 215lb 6ft tall. A little snug at the belly, but great fit, zipper up fine, came with extra buttons. The material felt of decent quality and looked like a rental. My son got to fit in for his prom at a reasonable cost and good appearance without breaking the bank
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Reviewed in the United States on April 21, 2026
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Amazon Customer
Port Orchard, US
★★★★★ 5
GREAT suit for the price.
Color: Black, Size: X-Large
Amazing suit. Ordered an XL for my husband when we got it. Pants were very long and a little big on the waist, so we took them to get tailored for a more fitted look. I don’t like that the “pocket square” is sewn in but, it can be tucked down, so we did that and added our own that matched the tie we ordered separately. Overall, good quality for the price. We have not washed but we do take it to the dry cleaners.
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Reviewed in the United States on May 9, 2026

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