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Redline Restomotive® 1978-1988 GM Car Left Rear Frame Rail

Redline Restomotive® 1978-1988 GM Car Left Rear Frame Rail
$400.99 ea
NEWOUT OF STOCK
Model: 5022372
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Left rear frame rail replacement designed for GM cars produced 1978–1988. This welded repair panel restores the rear structural rail that supports suspension mounts, body alignment, and load-bearing areas of the chassis. Replacing a corroded or damaged left rear frame rail is critical for vehicle safety, proper suspension geometry, and long-term durability. Manufactured from heavy-gauge steel with a corrosion-resistant finish, this rail provides a reliable, long-lasting repair solution for restorations and collision repairs. Intended as a direct replacement panel, it helps return the vehicle to factory-strength performance while simplifying installation for professional or experienced DIY restorers.
Features:
  • Fits 1978–1988 GM cars (left rear frame rail) — verify model-specific fitment before purchase.
  • Heavy-gauge steel construction for restored structural integrity and long service life.
  • Corrosion-resistant coating to help protect the repair area from future rust.
  • Weld-in replacement panel designed to align suspension and body mounting points.
  • Ideal for restoration and collision repair to return chassis strength and safety.
  • Prefit design reduces fabrication time; final fitment requires trimming and welding to vehicle.
Installation / Application:
  • Difficulty: 4/5
  • Estimated time: 4–8 hours (professional shop times may vary)
Suggested Tools:
  • Angle grinder or cutoff wheel
  • MIG or TIG welder
  • Jack stands and hydraulic jack or lift
  • Clamps and panel alignment tools
  • Drill and spot-weld cutter (if removing OEM welds)
  • Measuring tape and marker
  • Hammer and dolly set
  • Rust inhibitor/seam sealer and primer/paint
  • Safety gear (gloves, eye protection, respirator)
Instructions:
  1. Thoroughly inspect both the damaged rail and surrounding structure; measure and document alignment reference points.
  2. Support the vehicle securely on jack stands or a lift and disconnect suspension components attached to the rail as required.
  3. Mark the cut lines on the existing rail, remove any undercoating, and cut away the corroded or damaged section using an angle grinder or cutoff wheel. Preserve any usable attachment points if applicable.
  4. Prepare mating surfaces by cleaning to bare metal, removing rust, and fitting the new rail into position. Trial-fit the replacement and make any minor trimming so it aligns with factory reference points.
  5. Clamp the new rail in place and tack-weld at multiple locations to hold correct alignment; recheck measurements and suspension mount locations before completing welds.
  6. Fully weld the rail into place in short runs to control heat distortion, allowing the panel to cool between passes. Grind welds smooth where necessary.
  7. Treat welded seams with rust inhibitor, seam sealer, and prime/paint to protect against future corrosion.
  8. Reinstall suspension components, torque fasteners to factory specifications, and perform a final alignment check. Lower the vehicle and perform a road test to confirm proper handling and function.
About Redline Restomotive

Redline Restomotive® has established itself as a premier brand in the world of classic car restoration, providing enthusiasts with high-quality parts that meet the exacting standards of original manufacturer specifications. Dedicated to the preservation of American automotive history, Redline Restomotive® combines advanced manufacturing techniques with an in-depth understanding of vintage vehicles. The result is a range of products that seamlessly blend into the design and function of classic cars, giving restorers and collectors the assurance that each part reflects the era’s style, quality, and performance.

Crafted for both durability and aesthetic accuracy, Redline Restomotive® parts are ideal for those who value authenticity in their restoration projects. Whether restoring a car for display, personal enjoyment, or roadworthiness, customers rely on Redline Restomotive® for parts that not only fit perfectly but also contribute to the overall integrity and longevity of the vehicle. Each item is carefully engineered to replicate the fit, finish, and functionality of original components, making Redline Restomotive® a trusted name in restoration circles.

The extensive product catalog from Redline Restomotive® covers a wide variety of categories, allowing classic car owners to source everything from essential mechanical parts to subtle interior details. This comprehensive approach enables a cohesive restoration experience, where customers can confidently maintain both the exterior and interior authenticity of their vehicles. With Redline Restomotive®, every detail matters, providing the perfect balance between innovation and tradition for classic car preservation.

For more information or to explore their product offerings, you can visit retailers such as Muscle Cars & Classics, which feature a comprehensive selection of Redline Restomotive® products.

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 Submodel Years Fitment Notes
Buick Regal Base 1978 - 1987 REAR LEFT
Buick Regal Estate Wagon 1982 - 1983 REAR LEFT
Buick Regal GNX 1987 REAR LEFT
Buick Regal Grand National 1984 - 1987 REAR LEFT
Buick Regal Limited Turbo 1982 REAR LEFT
Buick Regal Limited 1978 - 1988 REAR LEFT
Buick Regal Sport 1978 - 1982 REAR LEFT
Buick Regal T-Type 1983 - 1986 REAR LEFT
Chevrolet Monte Carlo Base 1979 - 1988 REAR LEFT
Chevrolet Monte Carlo CL 1983 REAR LEFT
Chevrolet Monte Carlo LS 1986 - 1988 REAR LEFT
Chevrolet Monte Carlo Landau 1978 - 1981 REAR LEFT
Chevrolet Monte Carlo SS 1983 - 1988 REAR LEFT
Chevrolet Monte Carlo Sport 1978 - 1980 REAR LEFT
Oldsmobile Cutlass Supreme 442 1987 REAR LEFT
Oldsmobile Cutlass Supreme Base 1978 - 1988 REAR LEFT
Oldsmobile Cutlass Supreme Brougham 1978 - 1987 REAR LEFT
Oldsmobile Cutlass Supreme Classic Brougham 1988 REAR LEFT
Oldsmobile Cutlass Supreme Classic 1988 REAR LEFT
Oldsmobile Cutlass Supreme Indy 500 Pace Car 1988 REAR LEFT
Oldsmobile Cutlass Supreme LS 1981 - 1985 REAR LEFT
Oldsmobile Cutlass Supreme SL 1988 REAR LEFT
Oldsmobile Cutlass Base 1980 REAR LEFT
Oldsmobile Cutlass Brougham 1980 - 1981 REAR LEFT
Oldsmobile Cutlass LS 1980 - 1981 REAR LEFT
Oldsmobile Cutlass Vista Cruiser Brougham 1979 REAR LEFT
Oldsmobile Cutlass Vista Cruiser 1978 - 1979 REAR LEFT
Pontiac Grand Prix Base 1978 - 1988 REAR LEFT
Pontiac Grand Prix Brougham 1981 - 1987 REAR LEFT
Pontiac Grand Prix LE 1984 - 1987 REAR LEFT
Pontiac Grand Prix LJ 1978 - 1983 REAR LEFT
Pontiac Grand Prix SJ 1978 - 1980 REAR LEFT

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