There's no greater enemy for a transmission than heat. Whether your 1999-2013 GMT800 or 900 Chevy Silverado/GMC Sierra is a dedicated tow vehicle, hardworking fleet truck, or a daily driver, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a cooler to do just that.
Our 1999-2013 Chevy Silverado/GMC Sierra performance transmission cooler utilizes a stacked-plate design for maximum durability and powerful cooling. With a massive core that’s 521% larger than stock, and a 278% increase in frontal area, the Mishimoto transmission cooler adds significant cooling capacity to your truck whether you’re towing a heavy load, or low-speed driving on the trail. Internal fins and louvered external fins circulate cool air and fluid throughout the core for optimal heat transfer.
Included with the Mishimoto transmission cooler are precision-machined -6ORB quick-disconnects that connect directly to the stock lines, or can be removed allow the use of -6AN lines. We also include a relocation bracket for the ambient air temperature sensor to keep full functionality of your truck. An adjustable mounting bracket makes installing this transmission cooler a breeze in an hour or less.
Like all Mishimoto products, our 1999-2013 Chevy Silverado/GMC Sierra transmission cooler is backed by our Lifetime Warranty with Accident Protection for worry-free cooling as long as you own it.
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Let customers speak for us
from 73 reviews
While the recovery damper looks like a lightweight vest, this could not be further from the truth. This is a solid, weighted damper with pockets for some of your recovery gear - think shackles etc. Can have additional weight added as needed. Great peace of mind should the worst case scenario come to pass...
Nice looking, well made exhaust manifold. Qctane Haus was easy to deall with and shipping was prompt. Can't
wait to install the product. OEM manifold broke studs at 180K.
I was in a hurry to complete a build and decided to upgrade the transmission cooler at the last minute. They shipped out the product the following day and I received it a couple days later. I would definitely buy from them again.
Very nice looking transmission cooler. Bolted right into factory location and fit perfectly. I haven’t got to the point of getting the motor started yet to flow fluid through.
Great value snatch strap from a reliable manufacturer that you know has been tested and completes my basic recovery setup. The strap is made of very soft webbing, so be careful not to snag it on anything and store it appropriately protected.
Exactly what was needed, a well priced, properly marked bow shackle for recovery. Not yet used on the trail, but the pin operates easily, so not expecting any issues.
Easy order process. Fast shipping. Transmission cooler was a perfect fit. Installation took me 30 minutes, but would’ve taken me 15 had. I just watched the installation video first. Great vendor great product great experience.
Exceptional automotive parts retailer praised for lightning-fast shipping, often delivering within 1-3 days. Outstanding customer service with responsive live chat support and personalized assistance. Customers highlight easy ordering, professional communicati...Exceptional automotive parts retailer praised for lightning-fast shipping, often delivering within 1-3 days. Outstanding customer service with responsive live chat support and personalized assistance. Customers highlight easy ordering, professional communication, competitive pricing with coupons, and quality products including transmission coolers, lights, and recovery gear. Easy installation and perfect fitment consistently noted.
Orders are prepared for shipment the same day if received prior to 2 PM EST on business days. Orders received after 2 PM EST will be fulfilled the next business day.
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High-value orders may require a signature upon delivery. You’ll be notified before shipment if this applies.
Returns, Exchanges and Refunds
You have 60 days after delivery to request a return or exchange. Items must be new, uninstalled and in resalable condition.
If the return is due to our error, we'll provide a prepaid return label at no cost to you.
If the return is due to customer error, you'll be responsible for return shipping costs and a 15% restocking fee may apply.
Inspect your package when it arrives and report any shipping damage or missing items within 24 hours of delivery.
Product Warranty
If your product issue occurs within 60 days of delivery, and the item is new and uninstalled, start a return through our Return, Exchange and Refund Policy.
If your issue occurs after 60 days and the product is covered by a manufacturer warranty, contact the manufacturer directly.
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EPA, CARB and Disclaimers
Certain products are intended for off-road or race use only and may not be legal on public roads.
Buyers are responsible for ensuring compliance with all local, state, and federal laws.
Products that affect emissions may not be legal in California unless specifically labeled as CARB-exempt.
Items Ineligible for Return
Due to the nature of automotive parts, some items cannot be returned. These include:
Custom or special-order products
Products marked as "non-returnable" prior to purchase
Very nice looking transmission cooler. Bolted right into factory location and fit perfectly. I haven’t got to the point of getting the motor started yet to flow fluid through.
We're glad to hear that the Mishimoto transmission cooler was a perfect fit for your vehicle. We know it will perform just as well once your motor is up and running. Thanks again for choosing Octane Haus!
S
Sam LaMagna (United States)
Easy order process. Fast shipping. Transmission cooler was a perfect fit. Installation took me 30 minutes, but would’ve taken me 15 had. I just watched the installation video first. Great vendor great product great experience.
Hi Sam, thanks for your awesome 5 star review. We're glad to hear that you had a great experience with our product and that it was a perfect fit for your GM truck. We pride ourselves on providing great products and we're happy to know that our transmission cooler was easy to install and saved you time. Thanks for choosing Octane Haus!
A
Anonymous (United States)
ordered this item on Monday it was here on Tuesday. Item was packaged very good. Fit and finish were spot on for an easy install. Transmission temp went from 150-170 range to 110 to 120 range. great product 1st time ordering here will be a return customer.
Hi Geraldine, thanks for your purchase and thoughtful review! We're glad to stand behind Mishimoto products as they continue to support their excellent reputation.
D
Darin Saunders (United States)
Great quality product and great engineering on my 2008 Cadillac Escalade ESV in the future I'm going to use all three of my Vehicle there products I'm upgrading my Audi s4 radiator 6 speed and my 2006 Maxima 6 speed with the radiator
Hey Darin, thanks for your wonderful review! We're so glad to hear that you're satisfied with our Mishimoto transmission cooler for your Cadillac Escalade ESV. We take pride in our top quality products and are thrilled to know that you plan on using our products for your other vehicles as well. Thank you for choosing Mishimoto and for your continued support. We hope to provide you with fast shipping for all your future purchases.
M
Mukades Masic (United States)
Best upgrade to my truck soo far, it keeps my transmission nice and cool and shifting like a champ.
It is a significant upgrade versus the original transmission cooler.
Money well spent
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