2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 Torque Converters

Your classic Duramax LB7-powered Silverado or Sierra can still hold its own, especially if you're adding power with performance mods, but that doesn't mean your stock torque converter is going to like it. Tier One's performance torque converters for 2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 trucks restore excellent torque converter function while holding more power than stock. Our Duramax LB7 torque converters are built extremely strong, allowing them to handle heavy towing and aggressive track launches without warping or burning up. We carry everything from uprated stock replacement torque converters meant for towing to billet torque converters with multi-disc designs that ensure a solid lockup every time. If your torque converter has already failed and sent debris through the rest of the system, a simple replacement might not be enough, and you may need to swap the whole unit with one of our 2001-2004 Duramax LB7 Complete Transmissions. A torque converter working hard under a heavy load generates massive amounts of heat, so keep that heat from cooking your fluid and ruining your new converter with one of our 2001-2004 Duramax LB7 Transmission Coolers. To get the most out of your new converter, your transmission needs to apply the correct fluid pressure, so ensure your lock-up is firm and reliable by upgrading to one of our 2001-2004 Duramax LB7 Valve Bodies. While you have the transmission disconnected to install the converter, it's the perfect time to upgrade other maintenance items, so see what else you should swap in our 2001-2004 Duramax LB7 Transmission Parts.