Scania 'R' Series 3spd, Gearbox. Assembled Tamiya Scania 'R' Series (R470 & R620) Highline truck 3 speed gearbox, greased and thread locked, fitted with the standard Tamiya bearings(bushes). We haveThread locked the screws/bolts as indicated in the Tamiya build manual apart from the gearbox casing screws as you will need to remove these to install a motor.