2017-2019 Duramax L5P Torque Converters

The LML Duramax produces incredible torque, and the moment you tune it, the factory torque converter becomes a liability. A stock converter is prone to ballooning and slipping under heavy load, which generates excess heat and ruins your transmission fluid. Tier One's selection of performance torque converters for 2011-2016 Silverado & Sierra 2500 & 3500 Duramax LML trucks are engineered to lock up firmly and stay locked. We carry everything from heavy-duty towing converters to billet, multi-disc units designed for high-horsepower street and track builds. Stop wasting power through a slipping converter and put that torque to the ground with Tier One. 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 2011-2016 Duramax LML 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 2011-2016 Duramax LML 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 2011-2016 Duramax LML 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 2011-2016 Duramax LML Transmission Parts.