Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit

Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve Kit

Marsoni

M251S

$154.24

Get it in 3 business days with 1 day shipping. Friday, May 29

Mishimoto 2017+ GMC 6.6L Duramax L5P Transmission Thermal Bypass Valve KitThe Allison transmission is the backbone of your L5P Duramax. It's responsible for transmitting large quantities of torque from your V8 diesel powerplant. This torque generates a lot of heat, and if that heat isn't dissipated, it can destroy your transmission. The transmission cooler does a good job of keeping trans fluid temperatures in check, but only if the fluid can reach it. The stock cooling system of the Allison 1000 transmission utilizes an in

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Great pair of jeans for the money! Fit is spot on. They’re durable and comfortable as well, there’s a slight stretch to them making them easy to work and move around. My wife tells me my butt looks good in them too! The selection of colors is very cool. If you’re looking for some budget, slim fit jeans, you’re in the right place!

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Reviewed in the United States on December 3, 2025

Verified Purchase

Velvet

Boise, US

★★★★★ 4

Not stretchy

Size: 28W x 34L, Color: Black

They fit snugly, but they do not stretch in the slightest.

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Reviewed in the United States on June 6, 2026

Verified Purchase