The FG-06-BK is part of the TQ Final Gear Replacement Kit. It is designed to replace the worn OE gears in Alfa Romeo, Audi, BMW, Cadillac, Chevrolet, Ford, GM, Honda, Hyundai, and other vehicles. It features a steel alloy construction and a black finish. The kit includes the FG-06-BK final gear, bushings, shims, and clips for easy installation. It is highly recommended for any tuning or performance modifications, as it dramatically increases the strength and performance of the transmission.