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1973-1991 Chevy Truck Left Hand Inner Rocker Panel Backing Plate

1973-1991 Chevy Truck Left Hand Inner Rocker Panel Backing Plate
from $18.99 ea

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Model: 5020957
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The 1973-1991 Chevy Truck Left Hand Inner Rocker Panel Backing Plate is a structural reinforcement component designed to support the inner rocker area on squarebody GM trucks. Located behind the outer rocker, this backing plate provides added strength and stability to the cab floor and lower body, especially in rust-prone areas. Crafted from heavy-gauge stamped steel, it aligns with factory specifications for a precise fit and dependable performance. This piece is essential for any cab restoration or rust repair project where full structural integrity is required.

  • Fits 1973-1991 Chevrolet and GMC C/K Series pickup trucks (driver side)
  • Reinforces inner rocker panel and cab support structure
  • Made from heavy-gauge stamped steel for long-lasting durability
  • Matches factory contours for clean integration during welding
  • Essential for repairing rusted inner rocker or cab floor sections
  • Ideal for structural restorations or frame-off rebuilds

Installation:
Difficulty: 4/5 – Requires welding and structural alignment.
Instructions: Remove the rusted inner rocker panel or backing plate. Clean and prepare the surrounding metal. Test fit the new backing plate and trim if necessary. Weld securely into place along factory seams. Grind smooth, apply seam sealer, and finish with primer and undercoating to protect against corrosion.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years
Chevrolet Blazer 1973 - 1991
Chevrolet C10 Pickup 1973 - 1974
Chevrolet C20 Pickup 1973 - 1974
Chevrolet C30 Pickup 1973 - 1974
Chevrolet K10 Pickup 1973 - 1974
Chevrolet K20 Pickup 1973 - 1974
Chevrolet K30 Pickup 1973 - 1974
Chevrolet Suburban 1987 - 1991
GMC C15 Suburban 1975 - 1978
GMC C15/C1500 Suburban 1973 - 1974
GMC C1500 Suburban 1979 - 1986
GMC C15 1975 - 1978
GMC C25 Suburban 1975 - 1978
GMC C25/C2500 Suburban 1973 - 1974
GMC C2500 Suburban 1979 - 1986
GMC C25 1975 - 1978
GMC C35 1975 - 1978
GMC Jimmy 1973 - 1991
GMC K15 Suburban 1975 - 1978
GMC K15/K1500 Suburban 1973 - 1974
GMC K1500 Suburban 1979 - 1986
GMC K15 1975 - 1978
GMC K25 Suburban 1975 - 1978
GMC K25/K2500 Suburban 1973 - 1974
GMC K2500 Suburban 1979 - 1986
GMC K25 1975 - 1978
GMC K35 1977 - 1978
GMC R1500 Suburban 1987 - 1991
GMC R2500 Suburban 1987 - 1991
GMC V1500 Suburban 1987 - 1991
GMC V2500 Suburban 1987 - 1991

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1973-1991 Chevy Truck Left Hand Inner Rocker Panel Backing Plate: