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Fleece Performance

Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit

SKU: FPEXFPE-CLNTBYPS-CUM-1RT9

Water Bypass Kits

FPE Coolant Bypass Kits

Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit
Fleece Performance

Fleece Performance

Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit

SKU: FPEXFPE-CLNTBYPS-CUM-1RT9

Water Bypass Kits

FPE Coolant Bypass Kits

A$1,051.20
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

All new Fleece Performance coolant bypass for the 2019+ RAM with 6.7L Cummins! Our patent pending design seamlessly integrates with your truck for an OE fit-and-finish. 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 aFleece 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.

Product Overview

All new Fleece Performance coolant bypass for the 2019+ RAM with 6.7L Cummins! Our patent pending design seamlessly integrates with your truck for an OE fit-and-finish. 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 aFleece 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.


Features and 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

Product Details

Year Make
Category Rank:3
Category:Coolant Bypass
Description:Fleece Performance 2019+ Ram 2500/3500 Cummins 6.7L Coolant Bypass Kit
Emissions_Certifications:CARB EO # D-834-4
Material:Aluminum
Part Number:fpeFPE-CLNTBYPS-CUMMINS-19
Prop 65 (C, R or CR):CR
Prop 65 - Short Label:Prop 65 WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov 
Prop 65 Yes/No:YES

Part Type

Engine Coolant Bypass Kit

Data: v4.2 - Upd: 2026-10-01 00:40:47

Features

  • Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation
  • Ensures consistent temperatures across all cylinders
  • Lowers coolant temperature at the rear cylinders
  • Prevents damaging coolant pressure build up

Specifications

Product Attributes - Brand
Fleece Performance
Product Attributes - Manufacturer's Part Number
FPE-CLNTBYPS-CUMMINS-19
Product Attributes - Part Type
Water Bypass Kits
Product Attributes - Product Line
Fleece Performance Coolant Bypass Kits
Product Attributes - UPC
670875717725
Product Attributes - Water Bypass Spacer Included
No
Product Attributes - Water Bypass Hoses Included
Yes
Product Attributes - Fittings Included
Yes
Product Attributes - Fitting Material
Aluminum
Product Attributes - Fitting Color
Black
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Fleece Performance
StreetFX SKU fpexFPE-CLNTBYPS-CUM-1RT9
SFX Item ID 4228402
Supplier Item Code 4228402
Manufacturer SKU FPE-CLNTBYPS-CUMMINS-19
Manufacturer UPC 670875717725
Alternative References fpe-FPE-CLNTBYPS-CUMMINS-19, fle-s0399, FLCFPE-CLNTBYPS-CUMMINS-19, fpex-FPE-CLNTBYPS-CUMMINS-19, 6.7L

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