57MK81S Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC C15

For 1975-1978 GMC C15 Rocker Panel Backing Plate Right - Passenger Side 53238XT

For 1973-1974 GMC C15/C1500 Pickup Rocker Panel Backing Plate 83724KX

Right - Passenger Side Rocker Panel Backing Plate fits GMC C15 1975-1978 14XGBX

For 1975-1978 GMC C35 Rocker Panel Backing Plate Right - Passenger Side 57364SD

89KV57X Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC K25

Right - Passenger Side Rocker Panel Backing Plate For 1975-1978 GMC C15 GD163FW

49QD27P Right - Passenger Side Rocker Panel Backing Plate Fits 1975-1978 GMC K25