Kit contains all necessary O-rings and diaphragms to rebuild one fuel petcock. 2003 Kawasaki KX125 2004 Kawasaki KX125 2005 Kawasaki KX125 2003 Kawasaki KX250 2004 Kawasaki KX250 2005 Kawasaki KX250 2004 Suzuki RM-Z250 2005 Suzuki RM-Z250