Mishimoto Transmission Cooler 03-05 GM 6.6L Duramax LB7 / LLY
SKU: 91702114784

Mishimoto Transmission Cooler 03-05 GM 6.6L Duramax LB7 / LLY

$323.55 $359.50
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Mishimoto Transmission Cooler 03-05 GM 6.6L Duramax LB7 / LLYSo you drive your Duramax a little hard sometimes, huh? Well one thing you shouldnt overlook is how hot your Transmission becomes when you do. Luckily Mishimoto has designed a solution to that problem: a direct fit transmission cooler for your Chevy GMC 6. 6L Duramax. This transmission cooler utilizes a stacked plate design for maximum durability and powerful cooling. Aside from its durable construction, this transmission cooler is significantly

So you drive your Duramax a little hard sometimes, huh? Well one thing you shouldn’t overlook is how hot your Transmission becomes when you do. Luckily Mishimoto has designed a solution to that problem: a direct-fit transmission cooler for your Chevy/GMC 6.6L Duramax.

This 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 and boasts a 174% greater core volume. Not only that, it has a 192% 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 Mishimoto’s 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:
  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: 91702114784

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4.0 ★★★★★
Based on 2355 reviews
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Patricia Randle
Bozeman, US
★★★★★ 5
Good buy
Love these. Easy clean up and use. As described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
R
Rachel
Los Angeles, US
★★★★★ 4
Value, Durability, Everyday Use
What I liked: - Price-to-value is the standout. These were significantly better priced than similar packs I’ve bought from local grocery stores and big discount retailers. - For everyday, disposable use—think casseroles, baked pasta, brownies, roasted veggies—the lighter weight is perfectly fine. - They stack neatly and are easy to store, which matters when you’re buying in bulk. What I didn’t like: - They’re a bit flimsier and not as thick as the store-brand pans I’ve used before. You can feel the difference when you handle them. - For heavier dishes (large lasagnas, big roasts, or anything dense with sauces), a single pan can flex more than I’d like. How I used them: - Over the past couple of weeks, I’ve used these for baking brownies, roasting chicken thighs with vegetables, and prepping freezer meals. When I expected more weight or lots of liquid, I doubled up the pans, which solved the flex issue and kept everything stable. - I also tested bending one to compare sturdiness. In the accompanying video, you’ll see me gently flexing the pan to show the “give.” In the photo, I placed this pan next to a thicker pan I bought at a regular store so you can see the difference in gauge. My takeaway: - If you need heavy-duty pans for very weighty dishes, these aren’t a perfect one-for-one replacement for thicker, premium options. However, for routine baking, storage, and serving—especially when you plan to toss the pan afterward—the cost savings make a lot of sense. - Doubling them for heavier recipes is a simple workaround that maintains stability while still keeping the overall cost lower than buying thicker single-use pans. Verdict: - I’ll be purchasing these again for everyday use and bulk meal prep. The value is strong, and the performance is solid when you match the pan to the job or double up as needed.
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Reviewed in the United States on April 15, 2026
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Verified Purchase
Rose S.
Carnegie, US
★★★★★ 5
Easy clean up
Sturdy. Various uses.
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Reviewed in the United States on March 7, 2026
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Verified Purchase
Cindy Talley
Houston, US
★★★★★ 5
pans
good
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Reviewed in the United States on January 31, 2026
M
Verified Purchase
Monstee71
Carnegie, US
★★★★★ 2
Terrible!!
VERY lightweight and flimsy. I wouldn't trust these pans with anything! Oh... they might be okay for serving potato chips or popcorn.
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Reviewed in the United States on May 24, 2026

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