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Interior Door Panel Set Hardboard. Porsche 993 ❭ 99355503101
- 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
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.
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

Fits:

Porsche 997.1 2005-08
Porsche 997.1 Turbo 2007-09
Porsche 997.2 2009-12
Porsche 997.2 Turbo 2010-13
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08
Porsche 987C.2 Cayman 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 25
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9975553510
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

Fits:
Porsche 987 Boxster
Porsche 987C Cayman
Porsche 987.2 Boxster
Porsche 987C.2 Cayman
Porsche 997.1 Carrera
Porsche 997.2 Carrera
Process: Hand Lay-up
Material: Fiberglass, High quality-3K carbon fiber
Carbon weave: Twill/Plain Weave
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1CCPS32G02-L
The product you are viewing cross references to these numbers
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