SKU: 79875913181

Fleece Performance Coolant Bypass Kit 06-07 5.9L Auto Trans Cummins

Sale price$170.55 Regular price$189.50
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

Fleece Performance Coolant Bypass Kit 06-07 5.9L Auto Trans CumminsHelp eliminate the chance of scored rear cylinders and blown freeze plugs on your 5. 9L Cummins with this Coolant Bypass Kit from Fleece Performance! The Fleece Coolant Bypass solves the problem of excessive coolant pressure before it becomes a problem. The integrated secondary thermostat locates at the back of the block and allows coolant to flow freely when at normal operating temperatures ensuring consistent temperatures across all six cylinders

Help eliminate the chance of scored rear cylinders and blown freeze plugs on your 5.9L Cummins with this Coolant Bypass Kit from Fleece Performance! The Fleece Coolant Bypass solves the problem of excessive coolant pressure before it becomes a problem. The integrated secondary thermostat locates at the back of the block and allows coolant to flow freely when at normal operating temperatures ensuring consistent temperatures across all six cylinders and eliminates excessive pressure. The kit comes with high quality AN o-ring fittings and AN hose connections with braided hose to ensure a leak free installation and installs in two hours or less!

Increased Coolant Flow, Decreased Coolant Temperatures - The rear cylinders on the 24 Valve 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. Fleece's 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 24 valves 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.
Shipping Notes
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Exchange/Return Notes
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SKU: 79875913181

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Train Music
Omaha, US
★★★★★ 5
Perfect fit for my 2024 Subaru Ascent, clear visibility in heavy rain
Size: 26"+20+14
I purchased these wiper blades as a replacement for the originals on my 2024 Subaru Ascent, and they fit perfectly right out of the box. Installation was quick and straightforward, everything lined up exactly as expected with no adjustments needed. Once installed, the difference was immediately noticeable. The windshield clears smoothly with no streaking or skipping, even during steady rain. **What stood out:** * Exact fit for my 2024 Subaru Ascent * Easy installation * Quiet operation (no squeaking or chatter) * Very clear visibility during rainstorms (I get very nervous driving in the rain) After driving in several rainy conditions, my windshield stays crystal clear, which makes a big difference for nighttime driving and highway visibility. **Overall:** Great quality for the price and performs just as well as more expensive name-brand replacements. I would definitely purchase these again and recommend them to other Subaru Ascent owners looking for an easy, reliable replacement.
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Reviewed in the United States on February 28, 2026
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Cesar
Charlottesville, US
★★★★★ 5
Good price good product 2003 crv
Great
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Reviewed in the United States on April 22, 2026
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Momto3QTs
Draper, US
★★★★★ 5
Genuine Parts & Great Price
This is genuine Acura brake fluid which I needed for my MDX. This product works great and Amazon's price with free shipping cannot be beaten! Excellent on all fronts.
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Reviewed in the United States on December 1, 2025
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fuel98rider
Massapequa, US
★★★★★ 5
Genuine Honda fluid
It’s OEM Honda brake fluid. It’s DOT 3 fluid which is what my Honda calls for. It works, it’s clean and clear, exactly as brake fluid should be. Two containers will allow me to replace and refill the brake master cylinder in my Pilot.
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Reviewed in the United States on October 1, 2025
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Amazon Customer
Pawtucket, US
★★★★★ 5
A very good product.
A very good product.
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Reviewed in the United States on April 26, 2026

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