Transmission Cooler, fits Chevrolet/GMC 6.6L Duramax (LB7/LLY) 2003-2005
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.
- Direct-fit for all 2003-2005 Chevrolet/GMC 6.6L Duramax (LB7/LLY)
- CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines
- 174-percent greater core volume than stock cooler
- 192-percent greater external fin surface area over stock cooler
- Mishimoto Lifetime Warranty
Application Summary:
| Year |
Make/Model |
| 2003-2005 |
Chevrolet Silverado 2500 HD |
| 2003-2005 |
Chevrolet Silverado 3500 |
| 2003-2005 |
GMC Sierra 2500 HD |
| 2003-2005 |
GMC Sierra 3500 |
| Attributes |
| Country of Origin (Primary) |
CN |
| Feature Bullet 1 |
Direct-fit for all 2003-2005 Chevrolet/GMC 6.6L Duramax (LB7/LLY) |
| Feature Bullet 2 |
CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines |
| Feature Bullet 3 |
174% greater core volume than stock cooler |
| Feature Bullet 4 |
192% greater external fin surface area over stock cooler |
| Feature Bullet 5 |
Mishimoto Lifetime Warranty |
| GTIN |
00811580034084 |
| Hazardous Material Code |
N |
| Install Difficulty |
2 |
| Life Cycle Status Code |
Available to Order |
| Material |
6061 Aluminum |
| NAFTA Preference Criterion Code |
B |
| SDR Required Flag |
N |
| SellingPoint01 |
Direct-fit for all 2003-2005 Chevrolet/GMC 6.6L Duramax (LB7/LLY) |
| SellingPoint02 |
Stacked-plate construction for maximum durability and superior cooling |
| SellingPoint03 |
CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines |
| SellingPoint04 |
174-percent greater core volume than stock cooler |
| SellingPoint05 |
192-percent greater external fin surface area over stock cooler |
| SellingPoint06 |
Patent numberD900,161 |
| SellingPoint07 |
Mishimoto Lifetime Warranty |
| SellingPoint08 |
N/A |
| SellingPoint09 |
N/A |
| SellingPoint1 |
Direct-fit for all 2003-2005 Chevrolet/GMC 6.6L Duramax (LB7/LLY) |
| SellingPoint10 |
N/A |
| SellingPoint11 |
N/A |
| SellingPoint12 |
N/A |
| SellingPoint13 |
N/A |
| SellingPoint14 |
N/A |
| SellingPoint15 |
N/A |
| SellingPoint2 |
Stacked-plate construction for maximum durability and superior cooling |
| SellingPoint3 |
CNC-machined adapters make it easy to connect Mishimoto cooler to stock fluid lines or AN lines |
| SellingPoint4 |
174-percent greater core volume than stock cooler |
| SellingPoint5 |
192-percent greater external fin surface area over stock cooler |
| SellingPoint6 |
Patent numberD900,161 |
| SellingPoint7 |
Mishimoto Lifetime Warranty |
| SellingPoint8 |
N/A |
| SellingPoint9 |
N/A |
| TechSpec Applications |
N/A |
| TechSpec Caution |
N/A |
| TechSpec Chassis Codes |
LB7--LLY |
| TechSpec Core Construction |
N/A |
| TechSpec Core Height (in) |
5.78 |
| TechSpec Core Length (in) |
27.95 |
| TechSpec Core Thickness (in) |
1.25 |
| TechSpec Engine Codes |
6.6L Duramax |
| TechSpec Fluid Capacity (qts) |
N/A |
| TechSpec Includes |
Mishimoto Stacked Plate Transmission Cooler--CNC-Machined Quick-Disconnect to Hose Barb Adapters--Stock-style Quick-Disconnect Fittings--Transmission Hoses--Mounting Brackets--Worm Gear Clamps--Zip Tie--Mounting Hardware--Mishimoto Lifetime Warranty |
| TechSpec Inlet |
N/A |
| TechSpec Installation Notes |
N/A |
| TechSpec Note |
This kit fits with late 2003 trucks with purple clips. Early 2003 trucks with orange clips should use MMTC-DMAX-01. |
| TechSpec Outlet |
N/A |
| TechSpec Overall Height (in) |
N/A |
| TechSpec Overall Length (in) |
N/A |
| TechSpec Overall Width (in) |
N/A |
| TechSpec Rows |
13 |
