For 1966 GMC PB3500 Van Rocker Arm 19432SHDK 4.1L 6 Cyl Stock

For 1966 GMC PB3500 Van Rocker Arm Shaft End Plug Dorman 29596SNNV 4.1L 6 Cyl

For 1966 GMC PB3500 Van Rocker Arm Kit 71833YRDK 4.1L 6 Cyl Rocker Arm Stock

For 1966 GMC PB3500 Van Rocker Arm Kit 68245QHSR 4.1L 6 Cyl Rocker Arm Stock

For 1966 GMC PB2500 Van Rocker Arm 29697BFMQ 4.1L 6 Cyl Stock

For 1966 GMC PB3500 Van Rocker Arm Kit 74396KH 4.1L 6 Cyl Rocker Arm Stock

For 1966 GMC I3500 Rocker Arm 96261RHNW 4.1L 6 Cyl Stock

For 1966 GMC 1000 Rocker Arm 74976VNBQ 4.1L 6 Cyl Stock