Expansion Plug For 1967-1974 GMC P25/P2500 Van 1968 1969 1970 1971 1972 X999VS

1967 GMC P25/P2500 Van Base 4.1L 6 Cyl CARB Naturally Aspirated GAS. 1967 GMC P25/P2500 Van Base 4.8L 6 Cyl CARB Naturally Aspirated GAS. 1972 GMC P25/P2500 Van Base 4.1L 6 Cyl VIN: L CARB Naturally Aspirated GAS.