Interior Door Panel Set Hardboard. Porsche 993  ❭  99355503101

Retro Trim Interior Door Panel Hardboard Replacement Set 
Sold as a pair

Restore the foundation of your Porsche 993 interior with this Retro Trim Interior Door Panel Hardboard Replacement Set. Supplied as a left and right pair (set of 2), these OE-style hardboard backing panels provide the structural base for the complete interior door trim assembly and are the ideal solution for restoring worn, damaged or moisture-affected original door panels.

Fits:

• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) RS 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 993 (911) TURBO 1994-96
• Porsche 993 (911) GT2 1994-97
• Porsche 993 (911) TURBO S 1994-97

These replacement hardboard panels are supplied without vinyl covering, allowing you to retrim them using your choice of original-style vinyl, leather or Alcantara. Manufactured with the correct factory-style cut-outs and profile, they provide an excellent foundation for both factory-correct restorations and bespoke interior projects.

The original Porsche 993 door panel backing boards are prone to deterioration over time due to moisture ingress, repeated door use and natural ageing. As the hardboard weakens, it can warp, swell or lose its rigidity, causing loose upholstery, distorted door panels and poor alignment. Replacing the backing boards restores the strength of the door trim assembly, ensuring your new upholstery fits correctly and maintains a high-quality finish for years to come.

Whether you're undertaking a concours restoration, refreshing a tired interior or creating a custom retrim, this Retro Trim replacement set provides a professional-quality starting point.

What Do the Door Panel Hardboards Do?

The hardboard backing panels are the structural core of the Porsche 993 interior door panels.

Their purpose is to:

• Support the complete interior door trim assembly.
• Provide a rigid foundation for vinyl, leather or Alcantara coverings.
• Maintain the original shape and profile of the door panel.
• Support handles, armrests, switches and storage pockets.
• Provide secure mounting points for clips and fixings.
• Ensure the door trim fits correctly against the door frame.

Without a strong backing panel, even professionally trimmed upholstery cannot achieve the correct fit, appearance or durability.

Why Replace the Door Panel Hardboards?

Over time, the original hardboard backing panels deteriorate due to age and environmental exposure.

Common causes of failure include:

• Moisture entering through damaged door membranes or seals.
• Warping caused by humidity.
• Swollen or softened hardboard.
• Delamination of the board.
• Broken mounting holes.
• Damage around handle and armrest fixings.
• Previous repair damage.
• General ageing and fatigue.

Replacing the backing boards restores the strength and integrity of the door panels while providing the ideal base for new upholstery.

Ideal For

This Retro Trim replacement set is perfect for:

• Full Porsche 993 interior restorations.
• Concours-standard rebuilds.
• Water-damaged door panel repairs.
• Leather retrimming projects.
• Vinyl replacement.
• Alcantara interior upgrades.
• Bespoke interior builds.
• Replacing warped or damaged original door cards.
  
  

Benefits

• Restores the structural integrity of the door panels.
• Eliminates warped or deteriorated backing boards.
• Provides the correct base for new upholstery.
• Improves panel fit and alignment.
• Supports high-quality restoration work.
• Suitable for factory-correct and bespoke interiors.
• Durable construction for long-term reliability.

For the best installation results, inspect and replace worn trim clips, moisture barriers, door seals and fixing hardware while the door panels are removed to ensure a secure, professional finish.

Why Choose Retro Trim Interior Components?

Retro Trim has built a strong reputation among classic Porsche enthusiasts for producing high-quality interior restoration components designed with accuracy, durability and ease of installation in mind. These hardboard replacement panels provide the correct structural foundation for rebuilding Porsche 993 door panels, making them the ideal choice for professional restorers, upholstery specialists and owners seeking exceptional interior quality. Whether you're restoring your Porsche to its original specification or creating a bespoke cabin, Retro Trim components deliver the precision needed for outstanding results.