For 1988 Chevrolet K2500 Rocker Arm Kit 13478BBRS Rocker Arm Stock

Engine Rocker Arm Nut-Stock Melling MRM-1948

For 1987-1988 GMC R2500 Rocker Arm 75137XHWZ Stock -- without Rail

For 1987-1988 GMC R2500 Rocker Arm 12475NJRM Stock -- without Rail

For 1979-1986, 1988 GMC K2500 Rocker Arm 22758XQBX 1980 1981 1982 1983 1984 1985

For 1988-2000 Chevrolet K2500 Rocker Arm Kit 15215SHCT 1989 1990 1991 1992 1993

For 1979-1986, 1988 GMC K2500 Rocker Arm 29641HGPQ 1980 1981 1982 1983 1984 1985

Engine Rocker Arm Kit fits 1991-2000 GMC C2500,C3500,K2500,K3500 P3500 C2500 Sub