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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
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Description
Mishimoto 17-19 GM 6.6L Duramax (L5P) Transmission Cooler - SilverThere's no greater enemy for a transmission than heat. Whether your 2017 2019 Chevy GMC 6. 6L L5P 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 2017 2019 Chevy GMC 6. 6L L5P Duramax transmission cooler utilizes a stacked plate design for maximum
There's no greater enemy for a transmission than heat. Whether your 2017-2019 Chevy/GMC 6.6L L5P 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 2017-2019 Chevy/GMC 6.6L L5P Duramax transmission cooler utilizes a stacked-plate design for maximum durability and powerful cooling. Aside from its durable construction, this transmission cooler is significantly larger than the stock core. The Mishimoto transmission cooler boasts a 67-percent greater core volume, and 164-percent greater fin surface area than the stock 2017-2019 L5P 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 |
|---|---|---|---|
| 2017-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | GMC | Sierra 2500 HD | Base |
| 2017-2019 | GMC | Sierra 2500 HD | Denali |
| 2017-2019 | GMC | Sierra 2500 HD | SLE |
| 2017-2019 | GMC | Sierra 2500 HD | SLT |
| 2017-2019 | GMC | Sierra 3500 HD | Base |
| 2017-2019 | GMC | Sierra 3500 HD | Denali |
| 2017-2019 | GMC | Sierra 3500 HD | SLE |
| 2017-2019 | GMC | Sierra 3500 HD | SLT |
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 13 reviews
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Product Reviews
★★★★★ 4
Would buy again
Size: Small
Would have given 5 stars, but my dog was able to chew this down pretty quickly, so not the most durable. I do like that this is made with better material than other dog chews, so I would buy again.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Aggressive Chewers
Flavor Name: Bacon-bone shape, Size: Small-under 20LBS
Great for aggressive chewers.
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Reviewed in the United States on February 27, 2026
★★★★★ 3
Really not for aggressive chewers
Flavor Name: Bacon-2Pcs, Size: Medium/Large-under 60LBS
My 4 year old doodle is a very aggressive chewer. I am always looking for chew toys that will last longer than a day these did not!
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Great dog bones
Flavor Name: Variety Flavored, Size: Small-under 20LBS
My dogs really like these bones. They are a very durable material and easy for the dogs to hold onto while they chew. They are resistant to the chewing and don’t fall apart. They keep my dogs entertained and happy.
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Reviewed in the United States on May 4, 2026
★★★★★ 1
NOT for Aggressive Chewers.
Flavor Name: Bacon Flavored, Size: Medium/Large-under 60LBS, Flavor Name: Bacon Flavored, Size: Medium/Large-under 60LBS
I received 2 of these on May 6th and gave 1 to my Golden retriever then gave my Miniature Heeler the second 2 days ago on May 10th. This image is taken on May 12th.
It’s too soft to be labeled for Aggressive chewers because with other bones I have previously purchased the bones have been lasting forever. Which has me concerned about how much plastic-like material they’re consuming. I don’t recommend this one for Aggressive or even Moderate chewers.
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Reviewed in the United States on May 13, 2026