This is a new, never used condenser for the 1976 and 1977 KZ750 Twin motorcycle models. This is an essential part of any tune-up. Hard to find..here you go! Correct replacement for Kawasaki # 21013-031,21013-034 and 21013-1002 which are interchangeable part #'s. Top quality aftermarket item.Correct for 1976 B1 and 1977 B2 - Twin Cylinder model.