Here is a very helpful item... a complete engine Oil Seal Kit!  This is for the vintage 1970's Honda CB500-4 (CB 500 Four CB 500/4) Motorcycle. This Oil Seal kit  is for the 1971, 1972, 1973 1974. These are nice smooth classics bikes on the road. This 8pc Seal kit has all the seals needed for your engine. This has shift shaft seal, clutch pushrod seal, kickstart seal, sprocket seal, crank seal and more too!  Just replace the ones that are leaking now...or if you (or your mechanic) are restoring working on your engine this is the perfect and essential kit (along with a gasket set) to get your engine all sealed up nicely for years of riding!