Clutches

SD33 (NA) and L28 have the same size clutch, ~240mm. SD33 (NA) in the MK year range have a higher diaphram than the MQ. The flywheels are different, to suit the engines.

SD33-T and P40 have the same size clutch, ~275mm. The flywheels are different, to suit the engines. Hence, clutch assemblies are not compatible.

SD33-T clutch assembly can be used on a SD33 (NA). The correct spigot bush must be used, to suit the different input shaft lengths.

Note: clutch assembly refers to the flywheel, clutch plate and pressure plate.