The item that we are selling here is a helpful item if you are restoring, riding or racing your now vintage Kawasaki  KZ440 and KZ305 Motorcycles.   This is a new clutch pushrod Oil Seal.  This will also fit some late production KZ400 models.   Top quality aftermarket item. We only sell the best!  This fits all KZ440 and KZ305 models. Here is more info if you have a KZ400 to check fitment: This also fits some the Late production 1978 KZ400 B models.  Regarding 1978 Models, Kawasaki did a running change in the engines in this year. So if you have a 1978 model check  your engine serial #, as this set is correct for engines starting with with number 141330 higher.  If you have a 1978 or 1979 model with engine serial # 141331 and lower,  those engines takes a different seal, but we do have this item too just search for it in our store.