Genuine OEM Audi First Gear, part number 02M311251J. This precision-machined component is an integral part of the transmission's first gear assembly, responsible for transmitting power from the engine to the wheels at the lowest gear ratio. It is located within the transmission casing, engaging with other gears to provide the necessary torque for initial acceleration. Made from high-strength, hardened steel, it withstands extreme forces and wear. Choosing a genuine OEM transmission gear ensures exact tooth profiles, material hardness, and dimensional accuracy for quiet, reliable, and long-lasting transmission operation.