For 1988-2000 Chevrolet K3500 Rocker Panel Backing Plate 91649SW

For 1988-2000 GMC K3500 Rocker Panel Backing Plate 61653NW

For 1988-2000 Chevrolet K3500 Rocker Panel Backing Plate 12763RGTJ

For 1988-2000 GMC K3500 Rocker Panel Backing Plate 74477BSSK

For 1988-2000 GMC K3500 Rocker Panel Backing Plate Left - Driver Side 31476SWQN

92DQ38Z Left - Driver Side Rocker Panel Backing Plate Fits 1988-2000 Chevy K3500

79HW31D Right - Passenger Side Rocker Panel Backing Plate Fits Chevy K3500

For 1975-1986 Chevrolet K20 Rocker Panel Backing Plate 88164ZC