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

For 1988-2000 Chevrolet K2500 Rocker Panel Backing Plate 74157QS

For 1988-2000 Chevrolet K2500 Rocker Panel Backing Plate 88518YZMM

For 1988-2000 GMC K2500 Rocker Panel Backing Plate 57137GRQG

For 1988-2000 Chevrolet K2500 Rocker Panel Backing Plate 63894FWDX

For 1988-2000 GMC K2500 Rocker Panel Backing Plate Left - Driver Side 21189NHRZ

18RG36Q Left - Driver Side Rocker Panel Backing Plate Fits 1988-2000 Chevy K2500

Right - Passenger Side Rocker Panel Backing Plate 6PMT75 for K1500 K2500 C1500