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.
Model:
MMTC-DMAX-17SL
Transmission Cooler, fits Chevrolet/GMC Allison Transmission (L5P) 2017-2019
€455.00
Sale Price
Regular Price
Installation Difficulty:
Easy
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Key Features
- Direct-fit for all 2017-2019 Chevrolet/GMC with Allison transmission (L5P)
- Stacked-plate construction for maximum durability and superior cooling
- CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
- 67-percent greater core volume than stock cooler
- 164-percent greater external fin surface area over stock cooler
- Includes durable SAE J1532 hose designed specifically for use with transmission fluid
- Mishimoto Lifetime Warranty
Key Features
- Direct-fit for all 2017-2019 Chevrolet/GMC with Allison transmission (L5P)
- Stacked-plate construction for maximum durability and superior cooling
- CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
- 67-percent greater core volume than stock cooler
- 164-percent greater external fin surface area over stock cooler
- Includes durable SAE J1532 hose designed specifically for use with transmission fluid
- Mishimoto Lifetime Warranty
| Rows | 13 |
|---|---|
| Core Length (in) | 27.95 |
| Core Height (in) | 5.78 |
| Core Thickness (in) | 1.25 |
| Engine Codes | 6.6L Duramax LML w/ Allison 1000 Transmission |
| Chassis Codes | GMT K2HC GMT K2HG |
| Note | Silverado models require minor trimming of the grille to fit. |
Installation Guides
Mishimoto Stacked Plate Transmission Cooler
CNC-Machined Quick-Disconnect to Hose Barb Adapters
Stock-style Quick-Disconnect Fittings
Transmission Hoses
Air Temperature Sensor Relocation Bracket
Mounting Brackets
Worm Gear Clamps
Mounting Hardware
Mishimoto Lifetime Warranty
CNC-Machined Quick-Disconnect to Hose Barb Adapters
Stock-style Quick-Disconnect Fittings
Transmission Hoses
Air Temperature Sensor Relocation Bracket
Mounting Brackets
Worm Gear Clamps
Mounting Hardware
Mishimoto Lifetime Warranty
March 24, 2021
Excess heat is the bitter rival of any vehicle, but especially when it comes to heavy-duty trucks, like the 2015+ 6.6L Duramax powered Chevys and GMCs. The HD Silverado and Sierra are already mega heat-generating machines on their own. Still, GM designed these trucks for the express purpose of pulling, towing, hauling heavy payloads, and generating even more heat. While you might have opted for the Heavy-Duty Duramax powerplant, the engine is only half of the equation. No matter if you chose to upgrade to the coveted Allison gearbox or not, the transmission is the other half of what slots these trucks into the Heavy-Duty category. Keeping those gears at prime operating temperature is vital and exactly what we have in mind.
GM also had the same thought and has been including an external transmission cooler on all their trucks since at least 2001. Like the coolers found installed
Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice.
For our complete warranty policy, please click here.
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