This page will attempt to decode your engine number to give the original specification of the engine and gearbox.
Engine Number
Details
Guessworks Feature Product - Dowty washer for 5/8" plugs
Dowty washer for 5/8" plugs like the sump plug the detent plug or reverse switch on the front of the remote/Magicwand gearboxes. can also be used as a replacement for the copper washer on the oil feed pipe.