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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31
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For Your Every Summer RSVP, with Code: SUMMER15
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.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
4.0 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
The material and tight fitting helps keep you warm…
Size: Large, Color: Green
I am 5’8” tall and weigh in at 172 lbs dressed. These are the most comfortable cold weather shirts I have ever worn. In my humble opinion, what makes these shirts so comfortable and warm is the tight fitting and the soft, fleece like feeling on my skin. I wear and ordered the large size. The shirt is cut so they fit close to one’s body and look great compared to other brands of shirts that end up looking like one is wearing a potato bag. The tight fitting helps keep me feeling warm. No cold air pockets.
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Reviewed in the United States on January 27, 2026
★★★★★ 4
Nice, very soft fabric
Size: XX-Large, Color: Green
Very nice fabric, sizing is goood and only shrinks slightly after washing/drying. Good color selection
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Better than expected
Size: X-Large, Color: Light Red
Intended to use it as an everyday shirt but the quality we much better than expected for the price so it's now a more special occasion pullover. Nice soft and comfortable material, well constructed and sewn, good loose but not baggy fit, nice heft and substance around the collar. Lightweight but not thin fabric. Excellent value = 5+ stars
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Reviewed in the United States on March 2, 2024
★★★★★ 3
Beware of Size
Size: XX-Large, Color: White
Inconsistency in size per other reviews. The site said XL was my suggested size.....I usually follow that advice. I went XXL this time and happy I did. The neck is a medium and the rest is maybe XL....it feels "fitted" too...not very loose. I will keep it as I like a snug neck---but this needs effort to pull over my head. Having said that, the material is soft and not too thick. Just beware of sizes.
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Reviewed in the United States on October 16, 2025
★★★★★ 5
Excellence
Size: X-Large, Color: Black
Excellent product, definitely will be buying more
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Reviewed in the United States on May 21, 2026