Genuine OEM Audi Gearbox Reverse Gear, part number 0B4311531. This precision-machined gear wheel is an essential component within the transmission, specifically designed to engage and enable the reverse function of the gearbox. It is located internally within the gearbox housing. Weighing approximately 0.457 kg, this gear is manufactured to stringent material and tolerance specifications. Choosing a genuine OEM gearbox component ensures proper meshing, quiet operation, and the long-term durability required for reliable transmission performance.