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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.
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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
4.3 ★★★★★
Based on 2167 reviews
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Product Reviews
★★★★★ 5
Excellent!
Excellent PSU Very High Quality.
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Reviewed in the United States on May 29, 2026
★★★★★ 1
Sunveza MacBook Pro Charger: A Game-Changer on a Budget!
Man, where was this Sunveza charger when I first got my MacBook Pro? I'm the type who'd forget my head if it wasn't attached, and yup, I did it – forgot my charger on my first day bringing the new MacBook to the office. Enter Sunveza with its high-efficiency and surprisingly affordable solution.
First off, this thing charges FAST. Talking about going 0 to 80% in what feels like a blink. And the compatibility? Spot on. Whether you're rocking a MacBook Pro, Air, or even an iPad, this charger's got you. Plus, the multiple security features? A major bonus. Peace of mind knowing my gadgets are safe from overcharging or short-circuits.
Now, if we're comparing aesthetics, yeah, it doesn't have that Apple "heft." But honestly, does that matter? It's like comparing a sports car by the weight of its keys. What matters is performance, and Sunveza delivers.
I stumbled upon this gem after a less-than-stellar experience with a pricey off-brand from Target. Sunveza's charger is just the right size, doesn't sag from the outlet, and feels just right. The only tiny hiccup? The cable can be a smidge finicky sometimes, needing a gentle push to snugly fit. But considering the overall value and the fact that I could always grab a new cable if needed, it's a minor gripe.
In short, if you're in the market for a MacBook charger that won't break the bank and performs like a champ, Sunveza's got your back. Highly recommend! 🌟🌟🌟🌟🌟
EDIT: Wow okay... so things were working great for several months but then I started having issues with this charger and it would intermittently start and stop charging. The charger block itself would also get painfully hot to the touch. I had been using this product for less than a year when I started having these issues. I tested this out with other devices and outlets and witnessed the same behavior. I also took my MacBook to the Apple Store and they informed me that my battery was damaged, likely because of this charger. In light of this, I can no longer recommend the Sunveza charger.
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Reviewed in the United States on August 26, 2023
★★★★★ 5
Supercharge Your Devices in Record Time
I recently got my hands on this speedy 118W USB C charger, and boy, has it been a lifesaver for my tech-filled lifestyle! From juggling work on my MacBook Pro to catching up on my favorite shows on my tablet, having a charger that keeps up with my demanding schedule is such a relief. This charger isn't just fast; it's like a pit crew for your devices, getting them back to full power in no time.
What truly stands out is the efficiency and versatility of this charger. I was amazed at how quickly it charged my MacBook Pro—fully juiced up in just over an hour! Plus, the fact that it can charge my phone to 80% in just 20 minutes is a real time-saver. No more waiting around tethered to an outlet. The wide compatibility means I can use it with all my USB-C devices, from my laptop to my tablet and even my friend's Samsung Galaxy. It automatically adjusts the power output, which means I don't have to worry about frying my devices. How cool is that?
The peace of mind this charger provides is another big plus. With built-in features like over-current and temperature protection, I know my gadgets are safe while charging. It's clear that a lot of thought went into the design, using high-quality materials and smart technology to ensure a long service life. Plus, the included charge cable is a nice touch—no need to hunt for a compatible one!
In short, if you're on the lookout for a reliable and efficient charger that covers all your devices, look no further. This charger has made my tech life so much easier and worry-free. And if you ever have any questions, their customer service team is just an email away, ready to help. It's a solid investment in keeping all your gadgets powered up and ready to go.
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Reviewed in the United States on June 30, 2025
★★★★★ 4
Adapter doesn’t get super hot
I have a 2016 Mac Book Pro that I was convinced was broken, it just needed a new charger (lol) this works great for my laptop, phone, and iPad. Perfect length and the brick doesn’t get super hot when I use it.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Useful
It looks a bit thinner than the original Apple one, but it performs just as well in use. It charges very quickly, and the cable is also very sturdy.
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Reviewed in the United States on May 21, 2026