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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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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Romona
Natrona Heights, US
★★★★★ 5
Warm, comfortable, and great value for the price
Color: Ocean Blue, Style: Everyday 3 Season 50-80° F
I bought this sleeping bag for my son on a recent camping trip, and it performed surprisingly well. It warms up quickly once you’re inside, and the material feels soft and comfortable against the skin. The zipper runs smoothly and doesn’t get stuck easily, which is a big plus. It’s lightweight and packs down small, so it’s easy to carry and doesn’t take much space in his backpack. However, It’s not warm enough for very cold nights below the temperature rating, so if you’re camping in winter, you may need an extra blanket or liner. Overall, for the price, this sleeping bag is an excellent buy—comfortable, warm, and very practical. I would like to give five stars.
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Reviewed in the United States on January 21, 2026
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Amazon Customer
Whiting, US
★★★★★ 5
Easy travel sleeping bag!
Color: Ocean Blue, Style: Everyday 3 Season 50-80° F
Bought this for my son for his 5th grade camp, it was perfect, light enough for him to handle and warm enough at night!
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Reviewed in the United States on May 4, 2026
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Alison
Belleville, US
★★★★★ 5
it’s great quality for the price, and I would definitely recommend it
Color: Blossom Pink, Style: Everyday 3 Season 50-80° F
I’m very impressed with this sleeping bag! It’s incredibly comfortable, warm, and lightweight, making it perfect for camping trips and sleepovers. The material feels soft on the inside but durable on the outside, and the zipper works smoothly without snagging. It kept me warm throughout the night without feeling too heavy, and it rolls up easily for storage and travel. Overall, it’s great quality for the price, and I would definitely recommend it to anyone looking for a reliable and cozy sleeping bag.
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Reviewed in the United States on February 26, 2026
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KnightLite
Draper, US
★★★★★ 5
Perfect for Sleepovers
Color: Forest Green, Style: Everyday 3 Season 50-80° F
We purchased two of these for our grandkids (ages 6 and 8) to use while they visited for 3 days. It was “indoor camping” and they worked perfectly. Lightweight construction made them comfortable in 70+ degrees, and the way the manufacturer uses multiple pockets of insulation keeps it from bunching up, while remaining super soft and comfortable. Clean on a gentle cycle and they will last a long time… a great value for the price!
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Reviewed in the United States on April 12, 2026
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The Nest Counseling Center
Port Orchard, US
★★★★★ 3
Good enough
Color: Ocean Blue, Style: Everyday 3 Season 50-80° F
Ordered 2 for a quick trip. They were warm enough for 45 degree nights. My complaint is how easily they tore.
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Reviewed in the United States on April 26, 2026

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