Gearbox adapter. CNC technology made of ultra-durable 2017a duralumin, then hand finished. High precision and fitting guaranteed. Engine: Toyota 1UZ / 3UZ. Gearbox: BMW M50, M52, M57. Gearbox adapter. and then hand finished. High precision and fit guaranteed. Engine: Toyota 1UZ / 3UZ Gearbox: BMW M50, M52, M57