Shop Torque Converters and upgrade your 2001-2004 Chevy/GMC 6.6L LB7 Duramax. A torque converter is a fluid coupler that transfers the engine's power to the transmission. The primary components that make up the converter assembly include the impeller, stator, turbine, clutch, and front cover. The impeller is driven by the engine and acts as a centrifugal pump. The impeller forces fluid outward toward the turbine, which is connected to the transmission's input shaft, causing the turbine to spin. Upgraded torque converters are available for high-performance and competition applications. Utilizing billet steel construction allows the converter to remain completely flat under all condition. This offers the benefit of improved lockup performance and less slippage. Upgraded converters can also include a long list of upgraded internals such as a more durable turbine and impellers, additional friction surfaces/area, improved clutch materials, Torrington roller bearing construction, tig welded pump and turbine fins, as well as Billet apply pistons and stator cap. Symptoms of a failing torque converter can include slipping, overheating, contaminated fluid, shuddering, increased stall speed, and unusual sounds. Common failure items can include a faulty torque converter clutch or clutch solenoid, as well as worn needle bearings and seals. Shop all the leading manufacturers today including ATS Diesel, BD-Power, Banks Power, DPC, Revmax, Sun Coast Converters, and more!