Mishimoto MMTC-DMAX-03SL FITS: 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Transmission Coolers
SKU: 11643705096

Mishimoto MMTC-DMAX-03SL FITS: 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Transmission Coolers

Sale price$204.13 Regular price$226.81
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Description

Mishimoto MMTC-DMAX-03SL FITS: 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Transmission CoolersThere'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

There'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 and powerful cooling. Aside from It's durable construction, this transmission cooler is significantly larger than the stock core. The Mishimoto transmission cooler boasts a 174-percent greater core volume, and 192-percent greater fin surface area than the stock 2003-2005 Duramax transmission cooler. The included CNC-machined adapters connect directly to the stock transmission cooler lines for leak-free cooling. Direct-fit brackets and tailor-made hoses make installation easy. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty with Accident Protection for worry free cooling as long as you own it.

  • CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
  • Direct-fit for all 2003-2005 Chevrolet/GMC with Allison transmission (LB7/LLY)
  • Stacked-plate construction for maximum durability and superior cooling

This Part Fits:

Year Make Model Submodel
2003-2005 Chevrolet Silverado 2500 HD Base
2003-2005 Chevrolet Silverado 2500 HD LS
2003-2005 Chevrolet Silverado 2500 HD LT
2003-2005 Chevrolet Silverado 2500 HD WT
2003-2005 Chevrolet Silverado 3500 Base
2003-2005 Chevrolet Silverado 3500 LS
2003-2005 Chevrolet Silverado 3500 LT
2004 Chevrolet Silverado 3500 WT
2003-2005 GMC Sierra 2500 HD Base
2003-2005 GMC Sierra 2500 HD SLE
2003-2005 GMC Sierra 2500 HD SLT
2003-2005 GMC Sierra 2500 HD WT
2003-2005 GMC Sierra 3500 Base
2003-2005 GMC Sierra 3500 SLE
2003-2005 GMC Sierra 3500 SLT
2004-2005 GMC Sierra 3500 WT
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 11643705096

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4.5 ★★★★★
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Product Reviews
J
Verified Purchase
Juan
Phoenix, US
★★★★★ 4
Works as intended but lowers airflow
Style: HEPA
I got this because of the wildfire smoke in my area. It definitely filters out smell compared to a regular filter so I'm assuming it's also filtering out larger particles in the air. However, I've noticed that the airflow is reduced by a lot and the car is a lot warmer on the same setting I've used for years. It's a trade off and I might just rotate filters depending on AQI and how hot it is since it takes like a minute to change it out. I would recommend it if you live in an area that's smoky or cooler but not in places that get hot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2023
T
Verified Purchase
T.A.B
Houston, US
★★★★★ 5
Fits and filters great
Style: PUREFLOW
Perfect fit and replacement for my wife's car air filter. The air seems to be a little fresher after putting this one in i believe it makes a difference to spend a little more on a quality filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
J
Verified Purchase
Jörmungandr
Port Orchard, US
★★★★★ 5
Fits 2018 Honda Cr-V LX
Style: Particulate Media
Fits 2018 Honda Cr-V LX FWD. Be sure to install this filter with the arrow pointing down. Note that the plastic cover that holds the filter in place has an arrow pointing up to show you which direction to orient the plastic cover, not the filter, which again, should have the arrow pointing down.
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Reviewed in the United States on May 18, 2026
P
Verified Purchase
py6125
Charlottesville, US
★★★★★ 5
Fit 2026 Honda Passport
Style: HEPA
This fit a 2026 Honda passport elite. Amazon’s recommendation did not fit.
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Reviewed in the United States on May 13, 2026
L
Verified Purchase
Luis
Battle Creek, US
★★★★★ 5
Good
Style: HEPA
Good
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Reviewed in the United States on May 18, 2026

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