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Porsche > 993 (911) (1994-1998) > 993 (911) C2S 1994-97 > Chassis / Bodywork >

Sound Proofing

Sound Proofing

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DISPLAYING 1 to 5 (of 5 products)
Body & metal work sound proofing 50 x 50cm / 2mm thick - PCG55690200
2
Body & metal work sound proofing 50 x 50cm / 2mm thick
PCG55690200/1
Product Information
Product Information
Body & metal work sound proofing sheet.

oematch

1 Sheet of 50cm x 50cm
Thickness 2mm

It is extremely light and thin while at the same time providing exceptionally high damping quality, unmatched by materials of this kind. Equipped with self-adhesive glue layer for easy fitting.

-Extremely light and thin
-Exceptional noise damping
-Superb flexibility for use on complex surfaces
-A very flexible multi-layered material with polymer layer based on butyl rubber and aluminium foil outer surface

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PCG55690200
PCG55690200

The product you are viewing cross references to these numbers
Engine bay insulation mat. Porsche 993 - 5921, P154, 99355628100 - 5921, 1681300200
4
Engine bay insulation mat. Porsche 993
99355628100/1
Product Information
Product Information
Engine bay insulation mat.
Porsche ref no: 99355628100

oematch

Fits:
Porsche 993

These insulating mats are produced to the highest quality standards and hardly distinguishable from the original, partly no longer available insulating mats.

Advantages:
• Self-adhesive back
• Temperature resistant from -40 ° C to + 150 ° C
• Meets the automotive standards for fire behavior according to FMVSS302, DIN 75200
• Precise design (structure, thickness and shape) according to the original insulation mats
• True to original material
• noticeably less noise and radiant heat from the engine compartment

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99355628100
5921
P154
99355628100

The product you are viewing cross references to these numbers
Floor Sound Proof Mat FRONT. Porsche 964 /993 - 96455621803, 96455621801, 96455621702, 96455621702
5
Floor Sound Proof Mat FRONT. Porsche 964 /993
Special Order item
96455621
Product Information
Product Information
Floor Sound Proof Mat FRONT for RHD Cars


porsche

Fits:
Porsche 964 1989-94 RHD Cars
Porsche 993 1995-98 RHD Cars

Click 'Zoom in' for large parts diagram.
Diagram ref no 4.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96455621
96455621803
96455621801
96455621702
96455621702

The product you are viewing cross references to these numbers
Rear Sound Absorber. Porsche 993 1994-98 - 99355621500, 99355621600
3
Rear Sound Absorber. Porsche 993 1994-98
Special Order item
99355621
Product Information
Product Information
Rear Sound Absorber.
Restore the acoustic performance of your Porsche with this genuine OEM sound absorber panel from Porsche. Designed for the body/trim of the 993 this part improves road-noise insulation, reduces rear-end rattles and helps maintain the quiet, refined cabin Porsche intended.

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

Diagram Ref No 5

What This Product Does:

  • A sound absorber in this context is a piece of material (panel, mat, liner) mounted inside the body structure (often rear wheel-house, rear body panel, underside or inner arch) that reduces transmission of road noise, exhaust noise, underbody noise, and helps improve cabin quieter ambience.
  • It also helps with vibration damping and may assist in reducing resonance or panel noise from wheel wells or rear structures.
  • So although it may be called “Rear Sound Absorber”, the role is acoustic & NVH (Noise-Vibration-Harshness) control rather than structural or driving component.

Symptoms & Signs You Might Need Replacement:
  • Increased cabin noise, especially from the rear wheel well, rear body area, or under-carriage.
  • Rattling or buzzing noises in the rear portion of the vehicle (especially with ageing inner liners or insulation panels) — the material may have detached or degraded.
  • Visible damage or missing panel: The insulation mat or absorber might be missing, torn, sagging, wet (water ingress) or corroded substantively.
  • Age and wear: Over time, especially on older 993 vehicles, insulation mats can break down, delaminate, or allow noise ingress compared to new.

Why Replacement Matters:
  • Improves cabin comfort: For premium vehicles like Porsche 911, maintaining a quiet interior is part of the driving experience. A degraded sound absorber reduces this comfort.
  • Maintains NVH integrity: A whisking of rear-end noise, tyre/road noise or exhaust resonance can intrude into the cabin if the absorber is missing or ineffective. Replacing helps maintain factory spec.
  • Prevents hidden issues: Sometimes, missing or degraded insulation allows moisture, road debris or dirt to encroach into body cavities, potentially causing rust or other unseen damage.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99355621
99355621500
99355621600

The product you are viewing cross references to these numbers
Sound absorber kit for body work insulation. Porsche 356 / 911 / 912 / 914 / 964 / 993 - 8181300510 - 8181300510
2
Sound absorber kit for body work insulation. Porsche 356 / 911 / 912 / 914 / 964 / 993
8181300510
Product Information
Product Information
Sound absorber kit for body work insulation. Cut for doors but universal usable. Dimension 50 x 26 cm.

dansk

Fits:
Porsche 356 1.1-1.6 01/50-12/65
Porsche 911 2.0-3.3 01/63-07/89
Porsche 912 1.6 01/65-02/70
Porsche 914 1.7-2.0 01/69-02/76
Porsche 964 3.3-3.6 12/88-06/94
Porsche 993 3.6-3.8 10/93-09/97

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

8181300510
8181300510

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
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About Sound Proofing

Enhance cabin comfort and maintain Porsche-quality refinement with genuine Porsche and aftermarket sound proofing materials from Design911. These products are specifically engineered to reduce road noise, vibration, and engine resonance, helping preserve the quiet, solid feel that defines Porsche’s driving experience.

Manufactured to OEM specifications or higher, our acoustic insulation products include interior mats, under-carpet panels, engine bay liners, and thermal barriers - all designed for precise fitment and maximum effectiveness. Whether you’re restoring a classic air-cooled 911, upgrading your daily driver, or enhancing a performance build, Design911 offers a comprehensive selection of genuine Porsche and high-performance aftermarket sound deadening solutions.

By installing professional-grade sound proofing, you’ll enjoy a quieter cabin, improved ride quality, and greater thermal efficiency, all while maintaining your Porsche’s authenticity and performance balance.

Genuine Porsche Sound Proofing Kits
Factory-original Porsche insulation kits designed for perfect fitment, effective noise reduction, and accurate restoration of factory specifications.

Aftermarket Sound Deadening Materials
High-quality aftermarket acoustic and vibration-damping sheets offering superior performance and flexibility for custom applications.

Interior Floor & Carpet Insulation
Sound-absorbing mats and underlays that reduce road noise and vibration from the floor and tunnel areas for a smoother, quieter drive.

Engine Bay & Bulkhead Insulation
High-temperature resistant materials designed to reduce engine noise and heat transfer into the cabin.

Door, Roof & Panel Lining Materials
Lightweight sound-absorbing foams and barrier mats that control noise through doors, roof panels, and side structures.

Classic Porsche Restoration Sound Proofing
Authentic reproduction insulation and damping materials for classic Porsche models such as the 356, 911 Classic, and 964 - ideal for concours-level restorations.

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