


Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line KitEvery truck owner knows that it doesn't matter how powerful or reliable your engine is if you can't get any power to the wheels. The transmission mated to your 2001 2005 LB7 LLY Duramax is essential to everything your truck does, and keeping it cool is crucial. Upgrading your transmission cooler with a Mishimoto performance transmission cooler is a good start, but the fluid still needs to get to the cooler. That's where this 2001 2005 GM 6. 6L Duramax
Quick Dispatch:
Your Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.0 ★★★★★
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Product Reviews
★★★★★ 5
Reliable part
The price of this item was a bit of a shock. A good one though. I gave it to my mechanic, he installed it with no problems. Runs just fine. Would buy again
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Entrega a tiempo
Exelente
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Reviewed in the United States on October 3, 2025
★★★★★ 5
Works and fits as described !
Works perfectly! On time ! Fits perfectly! First time I ordered this item they sent the wrong part completely but this time it’s perfect!
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Reviewed in the United States on March 5, 2025
★★★★★ 5
Excelente
Muy buen producto. Excelente recomiendo 100%
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Reviewed in the United States on November 1, 2025
★★★★★ 5
Perfect fit
Top quality parts and no worries
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Reviewed in the United States on January 15, 2025