2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 Transmission Coolers

It's not exactly hard to get your Duramax LB7 to generate a bunch of heat, especially if you've added performance upgrades that turn up its power or when you're towing heavy, and that's not great for the longevity of your transmission. Tier One's selection of transmission coolers for 2001-2004 Silverado or Sierra 2500 or 3500 Duramax LB7 trucks greatly lower your transmission temperatures and keep you out of limp mode or seriously hurting your transmission. Each of these Duramax LB7 transmission coolers feature larger surface areas and much more efficient designs than stock which allows them to dissipate more heat more effectively. We here at Tier One one have both drop-in replacement Duramax transmission coolers and universal auxiliary transmission coolers that will give you an extra bump in cooling for competition use. Make sure you also check out our 2001-2004 Duramax LB7 Transmission Pans or our 2001-2004 Duramax LB7 Built Transmissions!