Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel 

Does your truck have higher mileage and higher than normal transmission temps? It's probably time to freshen up the transmission cooler. Over time the stock torque converter and internal clutch material can plug your trans cooler and reduce its cooling capabilities. We highly recommend a new OE replacement or performance transmission cooler anytime you rebuild or upgrade your transmission. This will insure transmission efficiency and longevity.

Includes:

• OEM GM replacement Allison transmission cooler

Replaces Part#:

• GM 89040217

DmaxStore Notes:

• If your truck has upgrades and/or tows, we recommend upgrading to a Max-Flow Artic Transmission Cooler, Part# MAX-TC-0105
• When replacing the transmission cooler, you will lose about 1-2 quarts of transmission fluid. We recommend using Transynd Transmission Fluid