SKU: 6483646088

Fleece Performance Coolant Bypass Kit W/Stainless Braided lines 94-98 12 Valve Cummins

Sale price$170.55 Regular price$189.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Fleece Performance Coolant Bypass Kit W/Stainless Braided lines 94-98 12 Valve CumminsHelp eliminate the possibility of scored rear cylinders and blown freeze plugs with this Coolant Bypass Kit from Fleece! The Fleece Coolant Bypass with Stainless Lines 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

Help eliminate the possibility of scored rear cylinders and blown freeze plugs with this Coolant Bypass Kit from Fleece! The Fleece Coolant Bypass with Stainless Lines 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 12 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 12 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: 6483646088

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4.4 ★★★★★
Based on 21 reviews
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Foothill Woman
Battle Creek, US
★★★★★ 5
Fits great
Color: Green
After my grandson keep bee lining for the remote, dropped it, which made a teeny chip in it-I decided to try a cover! This is really nice. It fits great. It has a nice grippy feel to it and now it's protected. We bought the lime green one, so now we can find it a lot easier as well as having it looking pretty sleek. It a great cover.
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Reviewed in the United States on October 19, 2025
T
Verified Purchase
Tina
Omaha, US
★★★★★ 5
Much better fitting
Color: White
Had to buy 2 of these cases because the first one was so well done. I bought another brand and it was such a loose fit. These are awesome!
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Reviewed in the United States on May 17, 2026
C
Verified Purchase
Carrie Wheat
Waukegan, US
★★★★★ 5
As advertised
Color: Green Orange
Did exactly what they needed. Made the remote slightly larger so it is easier to use and less slippery.
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Reviewed in the United States on May 31, 2026
W
Verified Purchase
Woodlandsman
Alexandria, US
★★★★★ 4
Pretty good...
Color: Red
Red color is kind of an orange-red. Hm... Came with some kind of dust on it. Once cleaned off it's not as slippery, yet still slips on just fine. Protects the remote - and your hands from the remote's hard edges. The raised bumps on the back make it easier to pickup - without digging your fingernails into cushions or carpets as you "scoop."
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Reviewed in the United States on January 31, 2026
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Verified Purchase
Brian Daniel
Draper, US
★★★★★ 5
Good product
Color: Red
Fits well.
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Reviewed in the United States on May 2, 2026

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