Rover SD1 Input Shaft and Mainshaft
Manual Gearbox Identification
There are two Manual gearboxes fitted to the SDI range- a 4-speed and a 5-speed. We have concentrated here on the 5-speed version because of the rarity of 4-speed models. However, as the 4-speed is essentially a 5-speed with fewer internals, it would be a simple matter to fit a 5-speed 'box in place of a 4-speed.
There were a number of changes affecting gearbox internals over the years and many parts are not interchangeable. Therefore, it is important to identify your gearbox by the number stamped on the left hand side - the vital figure being the suffix A, B, C or D.
5 Speed Gearbox Rebuilds
The 5 speed gearbox requires specialist tools and knowledge to dismantle and rebuild, and is normally beyond the ability of the DIY enthusiast. We therefore recommend the fitting of an exchange gearbox unit. However, we do stock a full range of components should you wish to rebuild your own 'box. Listed is a selection of parts most commonly needed.