After any automatic transmission rebuild or overhaul, your torque converter should be replaced. At Oregon Performance Transmission, we carry a wide selection of stock replacement, HD, and high-performance billet torque converters. For many applications, we carry stock stall speed and high stall speed converters. Select your make and transmission model below to view what options OPT has for you. A new upgraded torque converter is especially important in the newer diesel trucks and towing applications. These situations place massive stress on the converter. Under heavy loads your stock torque converter can twist and create an uneven surface for the lockup clutch. The HD billet steel housing torque converters that we carry at OPT will eliminate this twisting and keep your lockup clutch disk from burning up. For some applications we do carry multi-disc HD lockup clutch units.