For 1977-1978 GMC K35 Rocker Arm 22585FSYC 4.8L 6 Cyl Stock

For 1977-1978 GMC K35 Rocker Arm 97812FBHM 4.8L 6 Cyl Stock

For 1977-1978 GMC K35 Rocker Arm Kit 87796KFPC 4.8L 6 Cyl Rocker Arm Stock

For 1975-1978 GMC G25 Rocker Arm 53962MTTK 1976 1977 4.8L 6 Cyl Stock

For 1975-1978 GMC P35 Rocker Arm 46212PQNF 1976 1977 4.8L 6 Cyl Stock

For 1975-1978 GMC P35 Rocker Arm 42853ZRHT 1976 1977 4.8L 6 Cyl Stock

For 1975-1978 GMC P25 Rocker Arm 13692VSPV 1976 1977 4.8L 6 Cyl Stock

For 1975-1978 GMC P35 Rocker Arm Kit 99684YZCD 1976 1977 4.8L 6 Cyl Rocker Arm