The 8l90 transmission  is engineered to handle the toughest jobs with ease. Whether towing heavy loads or racing down the highway, its robust construction and intelligent shift logic make it a favorite among truck and performance car owners. Every transmission we offer is inspected for wear, flushed of old fluids, and tested under load conditions. If you want a long-lasting, high-torque transmission with fast delivery and expert support, the 8l90 transmission is the one to trust