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

Marsoni M251S
Sale price$99.95
Pay 4 payments of $24.99 a month.Shop Pay
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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.8 ★★★★★
Based on 1736 reviews
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peter
Louisville, US
★★★★★ 5
Great socks
Fit Type: Classic Fit, Color: Black, Size: Large
Love these socks, very comfortable and look and feel good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 29, 2025
M
Verified Purchase
Maranda
Lowell, US
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
J
Verified Purchase
Jessica Burdett
Port Orchard, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
J
Verified Purchase
john jeffrey elliott
Dallas, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026
M
Verified Purchase
Mar Gee
Battle Creek, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
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Reviewed in the United States on December 14, 2025

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