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

Right - Passenger Side Rocker Panel Backing Plate For Chevy K20 Suburban DT399YX

Left - Driver Side Rocker Panel Backing Plate For 1975-1986 Chevy K20 GT855MJ

For 1987-1988 Chevrolet V20 Suburban Rocker Panel Backing Plate 16261KN

For 1973-1986 Chevrolet K20 Suburban Rocker Panel Backing Plate 36445HPBR

59BR39Z Left - Driver Side Rocker Panel Backing Plate Fits 1975-1986 Chevy K20

For 1973-1986 Chevrolet K20 Suburban Rocker Panel Backing Plate 19134XXSQ 1974

Left - Driver Side Rocker Panel Backing Plate For Chevy V2500 Suburban QD259QR