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Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler

Marsoni M251S
Sale price$249.47
Pay 4 payments of $62.37 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission CoolerThere's no greater enemy for a transmission than heat. Whether your 2003 2005 Chevy GMC 6. 6L Duramax is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the drag strip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct fit transmission cooler to do just that. Our 2003 2005 Chevy GMC 6. 6L Duramax transmission cooler utilizes a stacked plate design for maximum durability
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Your Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler orders ship within 1-2 business days.

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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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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]
  • Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 478 reviews
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Verified Purchase
Mayela Diaz
West Palm Beach, US
★★★★★ 5
Excelente!!
Demasiado Útil muy bueno
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 21, 2025
D
Dutchy4C
Cuba, US
★★★★★ 5
Perfect fit for my 34 inch wide monitor!
This is a really snug fit for my 34 inch wide screen monitor and provides excellent privacy from wider angles so that nobody can get a look at what they're not supposed to see. With confidential projects this is very handy to have when there are visitors around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2024
R
Robert Novak
Port Orchard, US
★★★★★ 3
Not a great fit for Dell U3419W
I got this for use on one of my Dell U3419W wide screen monitors. The slide-in mount wasn't a good fit for the design of this monitor, as the bezel isn't typical and the illuminated part of the screen is a tiny bit narrower than the filter. I plan to see if I can hack something together that will work with this monitor without sticking stuff to the actual display part of the screen or leaving the filter far enough in places from the screen to make it unreadable. I'm rating it 3 stars instead of 2 because I think I can make it work, but it seems like the attachment methods included are meant for laptops rather than standalone monitors. If I had ordered this outright, I would have returned it.
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Reviewed in the United States on May 29, 2024
T
Verified Purchase
Tabatha Johns
San Leandro, US
★★★★★ 5
Great Product
This was a great product!
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Reviewed in the United States on October 4, 2025
D
Verified Purchase
dbknittel84
Lake Worth, US
★★★★★ 5
Amazing
This monitor is amazing. Comes with DisplayPort cable. So far this has been a great purchase.
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Reviewed in the United States on February 15, 2026

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