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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The Costa Del Mar Costa Topwater T‑Shirt is everything you want in a casual, everyday shirt. The material is super soft and lightweight, making it perfect for warm weather or long days outdoors. It feels breathable and comfortable without being too thin. The fit is spot on—true to size with a relaxed feel that doesn’t look baggy. The design is clean and stylish, with that classic Costa vibe that’s perfect whether you’re out on the water or just hanging out. After multiple washes, it’s held up great—no shrinking, fading, or losing its shape. You can tell it’s made with quality materials that are built to last. If you’re looking for a comfortable, good-looking t-shirt that represents a laid-back coastal lifestyle, this one is a great pick. Definitely worth it!

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Reviewed in the United States on April 18, 2026

Verified Purchase

Ed P

San Leandro, US

★★★★★ 5

Great shirt, runs a tad small

Size: X-Large, Color: Navy

Great looking shirt and good value for the money. Depending on your build you may want to order a size larger. I'm 6'4" and 207. I typically wear an XL and ordered an XL. It fits me but is a little snug there is not much room in the shoulders and sleeves or body for that matter. If I were back to my previous weight of 245 with a larger waist I would have to return it and get a XXL.

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Reviewed in the United States on April 28, 2025

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Mike C.

Bozeman, US

★★★★★ 5

Nice t-shirt

Size: Large, Color: Light Blue

Great for everyday wear. Love the color. Use for mostly for gym and pool. Good quality material. Fits true to size.

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Reviewed in the United States on January 3, 2026

Verified Purchase

Dillon Burgess

Alexandria, US

★★★★★ 5

Gets me laid more.

Size: Large, Color: Dark Heather

One of my best shirts. Fits great, my girlfriend cant keep her hands off me. Buy even if you dont fish. Light, Great color, and again you'll be a stud. Buy it.

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Reviewed in the United States on May 28, 2026