Mishimoto Upgraded Transmission Cooler For 2001-2003 GMC/Chevy 6.6L LB7 Duramax

There's no greater enemy for a transmission than heat. Whether your 2001-2003 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 2001-2003 Chevy/GMC 6.6L 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 174% greater core volume, and 192% greater fin surface area than the stock 2001-2003 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. 

Features:

• Direct fit for all 2001-2003 Chevrolet/GMC 6.6L Duramax (LB7)
• 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
• 174% greater core volume than stock cooler 
• 192% greater external fin surface area over stock cooler 
• Patent #D900,161
• Mishimoto Lifetime Warranty

Specifications:

• Rows: 13
• Core Length (in) 27.95
• Core Height (in) 5.78
• Core Thickness (in) 1.25
• Engine Codes: 6.6L Duramax 
• Chassis Codes: LB7

Fitment:

• 2001-2003 GMC Sierra 2500/3500 6.6L Duramax
• 2001-2003 Chevrolet Silverado 2500/3500 6.6L Duramax 

Included:

• 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 

Note:

• This kit fits with early 2003 trucks with orange clips. Late 2003 trucks with purple clips should use MMTC-DMAX-03