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

For 1987-1988 GMC R2500 Rocker Arm Kit 72438XYGC Rocker Arm Stock

Genuine ACDelco Valve Rocker Arm 12696105

For 1987-1988 GMC R2500 Rocker Arm 11597ZF Stock -- Without Rail

For 1987-1988 GMC R2500 Rocker Arm 87282VNMB 4.8L 6 Cyl Stock

For 1987-1988 GMC R2500 Rocker Arm Kit 73648XKCQ Rocker Arm Stock

For 1987-1988 GMC R2500 Rocker Arm 48626QTGX 4.8L 6 Cyl Stock

For 1987 GMC V2500 Rocker Arm Kit 77665QW 4.8L 6 Cyl Rocker Arm Stock