2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ Transmission Coolers

It's not hard to get the Duramax LBZ Silverado and Sierras extremely hot, especially if you're towing extremely heavy or have a bunch of power modifications stacked on, but your transmission will definitely not be happy about it and could get damaged or throw you into limp mode. Tier One's performance transmission coolers for 2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ trucks help reduce your truck's transmission temperatures, even if you are pushing it to the limit of power and towing capacity. Each of these Duramax LBZ transmission coolers feature more surface area and efficient designs than stock, which greatly improve their heat dissipation to keep your HD Silverado or Sierra's transmission temperatures down so that you don't end up on the side of the road or causing permanent damage to your truck's transmission. Make sure you also check out our 2006-2007 Duramax LBZ Transmission Pans or our 2006-2007 Duramax LBZ Torque Converters!