For 1967-1974 GMC P25/P2500 Van Distributor Vacuum Advance SMP 1967 1968 1969

1967 GMC P25/P2500 Van Engine: 4.1L L6; Exc. Magnetic Pulse Ignition;. 1967 GMC P25/P2500 Van Engine: 4.8L L6; Exc. Part Type: Distributor Vacuum Advance. 1974 GMC P25/P2500 Van Engine: 4.1L L6; OE No. 1110489 / 493 / 498 / 499;.