Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram
Click to zoom in

Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram

SKU: ds_FQWW_FPE-CLNTBYPS-CUMMINS-MAN
Product Type: Engine Coolant Bypass Kit
2 sold in last 8 days
$558.99
Inventory:
$558.99
Trust Badge

Guaranteed Fitment

Always the correct part

Added Value

Performance matched parts

In-House Experts

We know our products

Nationwide Delivery

Economy shipping

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L 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 5.9/6.7L 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.

Cummins Coolant Bypass Kit (2003-2007 Manual Transmission)

Fits: 2003-2007 Dodge Ram 2500, 2003-2007 Dodge Ram 3500

Please review Specifications and the detailed fitment table for notes and exceptions.

customers are viewing this product
Fleece Performance FPE-CLNTBYPS-CUMMINS-MAN Cummins Coolant Bypass Kit (2003-2007 Manual Transmission) for Select Dodge Ram 2500, Dodge Ram

Trusted by Thousands


Rock Solid Hitch

Solid hitch with serious strength and clean powder coat, heavy to lift, but installs easy and tows perfectly!!

Great Shipping

Shipping was quick and on time - exactly what I needed for my small-block build - would buy again for sure

Perfect Fit Mats

Weatherbeater mats fit my work truck perfectly. Dropped them in and nothing moves. Truly a great upgrade

Sleek Visors

Window visors look incredible and feel durable, install was simple. Zero wind noise on the highway!

Leveling Success

Leveling kit components were well packed. Instructions lacking, but online videos helped. Rides level now and feels planted.

Found Single Lifters

Found single lifter pairs in stock here when others required full sets, fast shipping got me racing again, hell yeah!!

Desert Series Bumper

Rear bumper upgrade looks better than factory plastic. Install was easy, and functionality is miles ahead. Highly recommended.

Lomax Fitment

Tonneau cover fit is excellent. Clear instructions and a smooth install. Delivery to my door was super convenient

Next Day Turbo

Turbo arrived next morning and matched description. Bolted up cleanly and truck is back to full power.

Legend Grille Guard

Husband’s birthday grille guard is rock solid, looks sharp he loves it so much!!! Thanks again

Shipping Protection Helped

Customer service handled a damaged shipment immediately. Refund was painless. I’ll shop here again.

Easy Exhaust Install

Exhaust system installed in two hours on my first try. Perfect fit and the sound is pure joy.

Do you offer wholesale or jobber pricing?

Yes. Wholesale pricing is available for legitimate businesses that provide a valid business number or equivalent proof. Ongoing purchase volume is required to maintain discount eligibility. One-time personal buyers aren’t eligible.

Will this part fit my vehicle?

If a product page clearly lists fitment for your vehicle and the description leaves no reasonable doubt, we’ll cover the cost of return if it doesn’t fit. Exclusions apply if prior modifications cause the issue. When browsing self-serve, you’re responsible for confirming compatibility by checking manufacturer fitment data and notes. If unsure, contact us before ordering and we’ll verify it for you.

Do you offer technical support or installation advice?

We help where possible on a case-by-case basis. Most manufacturers include detailed instructions and tech support contacts. Because our catalog spans hundreds of brands, we can’t provide every torque spec or procedure, but we’ll connect you with the manufacturer if needed.

Do you offer price matching?

We don’t guarantee price matching, but we’re happy to review a legitimate in-stock offer from another Canadian retailer. The comparison must include all costs such as product price, shipping, taxes, and fees, and the item must be identical and available for immediate purchase. We won’t lose money to match unsustainable or out-of-stock pricing.

Can I exchange an item?

Yes. In-store exchanges happen on the spot when stock is available. For shipped orders, the original item must be returned first. Once received and inspected, we can issue a store credit toward the correct part or replacement. We can’t send a second item while the first is still in your possession without payment for both.

Are prices shown before or after tax?

All prices on the site are before tax. GST, HST, or PST is calculated at checkout based on your shipping address..

Need Help? We've Got Answers.

Find quick solutions to the most common questions about shipping, returns, compatibility, and support.

Your cart

×