Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
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
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.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.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 384 reviews
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Product Reviews
★★★★★ 5
Best leather with lower cost
Color: Brown, Color: Brown
Good quality, I've always loved fossil leathers,. Satisfied with the item.
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Super cute, well made
Color: Infinite Pink
Just what I was looking for…can’t top the cute pink
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Reviewed in the United States on May 19, 2026
★★★★★ 4
The pink is darker than the image portrays
Color: Infinite Pink
The pink color is significantly darker than the image shows. It’s like a dark red rose color in real life, not so much a hot pink like the listing shows
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Still A Fossil Fan
Color: Black, Color: Black
I have been a fan of Fossil products for many years. When I needed a new wallet I was happy to have found this style on Amazon.
I travel fairly often so I knew that I wanted a leather wallet that had a removeable hand strap, ample card storage, and a zip closure. This wallet was exactly what I was looking for.
The strap is sturdy and zipper is really smooth. The inside of the wallet is very roomy, with multiple pockets (my samsung phone fits inside). There are also two zipper sections (one interior and the other exterior). There are also several places for your ID, cards, etc.
I have been using this wallet for over a yearit now and I must say that it has held up really well. There are no pulls/ tears in the stiching or issues with the strap and the zippers still work like new.
It's a great option to have on those days when you just don't feel like carrying around a handbag. I would definitely buy this item again.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Great wallet!
Color: Brown
This was a present for my mom and she loved it!
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Reviewed in the United States on December 20, 2025