OER 1964-67 Chevelle, El Camino, GTO, Tempest, LeMans, Skylark, Gran Sport, 442, Cutlass, F85 Inner Rocker Panel 2 Door Models RH

Part Number: 4537121-OER

OER 1964-67 Chevelle, El Camino, GTO, Tempest, LeMans, Skylark, Gran Sport, 442, Cutlass, F85 Inner Rocker Panel 2 Door Models RH

Part Number: 4537121-OER

Original price was: $109.19.Current price is: $94.95.

On Backorder

( Inventory updated: 06/06/2026 )

Estimated ship date: 30 days or more

If there is no ETA, we will refund the cost of the part.

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Replace Your Vehicle’s Inner Rocker Panel with Confidence

Revitalize the structural integrity of your classic 1964-67 Chevrolet Chevelle, El Camino, Pontiac GTO, Tempest, LeMans, Buick Skylark, Gran Sport, and Oldsmobile 442, Cutlass, and F85 with our premium RH inner rocker panel. Specifically designed for 2-door models, this replacement part is fabricated to stringent factory specifications, ensuring a flawless fit and reliable performance. Whether you are addressing rust damage or performing a full restoration, this inner rocker panel is the ideal component to restore your vehicles body strength and originality.

Key Features and Benefits

  • Constructed from stamped steel for exceptional strength and long-lasting durability.
  • Factory-style reproduction for an OE fit, contour, and authentic appearance.
  • Provides essential structural support between the floor pan and outer rocker panel.
  • Precisely formed to replicate original GM design and measurements.
  • Restores vehicle body strength and rigidity to meet factory specifications.
  • Finished in black Electro Deposit Primer (EDP) for superior corrosion protection.
  • Directly replaces GM part number 4537121, making installation straightforward.

Technical Specifications

  • Part Number: 4537121
  • Brand: OER

Fitment Information

  • Buick Applications:
    • 1965 – 1967 Buick Gran Sport
    • 1964 – 1967 Buick Skylark
    • 1964 – 1967 Buick Special
  • Chevrolet Applications:
    • 1964 – 1967 Chevrolet Chevelle
    • 1964 – 1967 Chevrolet Malibu
  • Chevrolet Truck Applications:
    • 1964 – 1967 Chevrolet El Camino
  • Oldsmobile Applications:
    • 1964 – 1967 Oldsmobile 442
    • 1964 – 1967 Oldsmobile Cutlass
    • 1964 – 1967 Oldsmobile F85
  • Pontiac Applications:
    • 1964 – 1967 Pontiac GTO
    • 1964 – 1967 Pontiac LeMans
    • 1964 – 1967 Pontiac Tempest

Don’t let rust and corrosion compromise your classic car’s performance and appearance. Upgrade to the OER inner rocker panel today and ensure your vehicle remains a true representation of automotive heritage. Order now to experience unmatched quality and fit, and bring your restoration project one step closer to completion!

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OER

Original Equipment Reproduction - OER - is the leading manufacturer and distributor of quality classic automotive restoration parts and accessories. OER products are meticulously manufactured to replicate the OEM appearance, quality and fit that meets or exceeds the original factory specifications.

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