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Engine Compartment Seals

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DISPLAYING 1 to 16 (of 23 products)
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90155689120/1
Product Information
Product Information
Engine bay sound proofing damping mat, reinforced

Fits:
Porsche 911 / 912 - 1965 to 1989

Diagram ref no 26

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90155689120
90155689120
901 556 891 20

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Special Order item
91155689101
Product Information
Product Information
Engine bay sound proofing damping mat.

porsche

Fits:
Porsche 911 1965-89

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91155689101
91155689101

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91155689101/8
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Product Information
Engine bay sound proofing damping mat
This pad is installed in the engine bay to dampen noise, reduce heat transfer, and help maintain a quieter cabin. It’s made to match the original shape for a direct fit, offering effective sound insulation and thermal protection.  

Fits:

Porsche 911 / 912 1965 - 1989

Diagram ref no 26

Location: In the engine bay, frequently mounted on the firewall or underside of the engine cover, replacing old or deteriorated insulation material

What this product does:
Acts as a sound-dampening layer in the engine compartment
• Reduces engine noise entering the cabin
Helps buffer heat, protecting nearby components and minimizing radiant heat transfer

With age, engine sound insulation pads can sag, crack, or break down, reducing their effectiveness at blocking noise and controlling heat. When this happens, more engine noise enters the cabin and heat may affect nearby components. Replacing the pad restores quiet cabin comfort and proper thermal protection in the engine bay.

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Related, superseded, cross reference or alternative numbers for comparison.

91155689101
91155689101
90155689120
901.556.891.20
901 556 891 20
911.556.891.01
911 556 891 01
90255689340
902.556.893.40
902 556 893 40
91155689100
911.556.891.00
911 556 891 00
90155689121
901.556.891.21
901 556 891 21
90255689121
902.556.891.21
902 556 891 21
90255689140
902.556.891.40
902 556 891 40
90255689141
902.556.891.41
902 556 891 41
90255689321
902.556.893.21
902 556 893 21
90255689420
902.556.894.20
902 556 894 20
90255689440
902.556.894.40
902 556 894 40
90255689521
902.556.895.21
902 556 895 21
90255689540
902.556.895.40
902 556 895 40
90255689621
902.556.896.21
902 556 896 21
90255689640
902.556.896.40
902 556 896 40

The product you are viewing cross references to these numbers
93055689102/8
Product Information
Product Information
Engine Bay Sound Proofing Damping Mat.

The OE Match Engine Bay Sound Proofing Damping Mat is a premium-quality replacement insulation panel designed to reduce engine noise and restore the original appearance of the engine compartment on compatible Porsche models. Manufactured to OE specifications for fit, thickness and durability, this sound proofing mat helps absorb engine noise and vibration while providing a factory-style finish to the engine bay.

Fits:

  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930) 

Manufactured from high-quality heat-resistant acoustic insulation material, the damping mat is engineered to withstand elevated engine bay temperatures, moisture, oil vapours and continual thermal cycling. Precision-cut to match the original contours and mounting locations, it provides direct OE-style fitment and is ideal for replacing deteriorated, oil-soaked or damaged original insulation during restoration, refurbishment or routine maintenance.

What This Product Does:
  • Reduces engine noise transmitted into the cabin.
  • Dampens engine vibration and sound resonance.
  • Restores the original appearance of the engine bay.
  • Provides thermal and acoustic insulation.
  • Helps protect surrounding panels from engine heat.
  • Improves overall cabin comfort and refinement.
  • Provides factory-style fitment and finish.
  • Forms an essential part of the engine compartment insulation system.

Symptoms Of Wear Or Failure:
  • Increased engine noise inside the cabin.
  • Sagging or detached insulation.
  • Cracked, brittle or deteriorated insulation material.
  • Oil contamination or staining.
  • Heat damage or discolouration.
  • Missing sections of insulation.
  • Loose material within the engine bay.
  • Poor engine compartment appearance.
  • Reduced sound insulation effectiveness.
  • Age-related deterioration due to heat and moisture exposure.

Why Replacement Matters:
  • The engine bay sound proofing mat is continually exposed to high temperatures, engine vibration, moisture and oil vapours. Over time, the insulation material can harden, crumble, become oil-soaked or separate from its backing, significantly reducing its ability to absorb engine noise and withstand engine bay conditions.
  • A deteriorated sound proofing mat can increase engine noise within the cabin, reduce driving refinement and detract from the appearance of the engine compartment. Loose or damaged insulation may also interfere with surrounding components if left unattended.
  • Replacing a worn or damaged sound proofing mat restores the original acoustic insulation and factory appearance of the engine bay. The OE Match Engine Bay Sound Proofing Damping Mat is manufactured to OE standards using premium heat-resistant materials, providing precise fitment, excellent noise reduction and long-lasting durability, making it the ideal choice for Porsche restoration, servicing and preventative maintenance.



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93055689102
93055689102

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91150411502
Product Information
Product Information
Engine compartment seal, Front

porsche

Fits:
Porsche 911 (930) Turbo 1975-89
Porsche 964 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref: 5

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91150411502
91150411502

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91150411502/8
Product Information
Product Information
Engine compartment seal, Front

oematch

Fits:
Porsche 911 (930) Turbo 1975-89
Porsche 964 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref: 5

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91150411502
91150411502

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91150411500
Product Information
Product Information
Engine compartment seal. FRONT

Fits:
Porsche 911 1965-73

Diagram Ref: 8

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91150411500
91150411500

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91150411500/8
Product Information
Product Information
Engine compartment seal, FRONT

Fits:
Porsche 911 1965-73

Diagram Ref: 8

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91150411500
91150411500

The product you are viewing cross references to these numbers
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91150411302
Product Information
Product Information
Engine compartment seal. FRONT

porsche

Fits:
Porsche 911 1974-89

Click 'Zoom in' for large parts diagram.
Diagram ref no 8

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91150411302
91150411302

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91150411302/1
Product Information
Product Information
Engine compartment seal, FRONT.
This seal is designed to fit the front of the engine compartment on the Porsche 911 G-series (1974-1989). Built to original Porsche specification for perfect fit and material properties Helps to prevent unwanted contaminants from entering the engine bay and protect wiring, hoses and grommets.

Fits:
Porsche 911 1974 - 1989

Diagram ref no 8

Over time, the engine compartment seal can harden, crack, or lose elasticity due to heat, oil exposure, and age. A worn or damaged seal allows water, dust, and engine heat to escape or enter where it shouldn’t - leading to corrosion, dirty engine bays, and reduced cooling efficiency.

When to Replace:
•  If you notice cracks, flattening, or brittleness in the seal material.
•  When there’s excessive engine bay noise, heat leakage, or water ingress after washing or rain.
During engine removal or restoration work, as part of preventative maintenance on classic Porsche models.

Replacing with a fresh engine compartment seal restores proper insulation, keeps contaminants out, and helps maintain the performance and longevity of your air-cooled Porsche.

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91150411302
91150411302

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91150411102
Product Information
Product Information
Engine compartment seal, Rear.

Fits:
Porsche 911 1965-89

Diagram ref no 7

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

91150411102
91150411102

The product you are viewing cross references to these numbers
91150411102/1
Product Information
Product Information
Engine compartment seal, Rear.

Fits:
Porsche 911 1965-89

Diagram Ref: 7

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91150411102
91150411102

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93050417001
Product Information
Product Information
Engine compartment seal, REAR.

porsche 

Fits:
Porsche 930 1975-89
Porsche 964 1989-94

Diagram Ref no 6

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93050417001
93050417001

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93050417001/8
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Engine Compartment Seal, REAR.

The OE MATCH Engine Compartment Seal, Rear is a high-quality replacement rubber seal designed to fit around the rear section of the engine compartment on classic Porsche models. This seal creates a protective barrier between the engine bay and the surrounding bodywork, helping to prevent the ingress of water, dirt, dust, and hot air while ensuring correct airflow management through the engine compartment.

Fits:

  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93 

Diagram Ref No 6 

Manufactured to OE specifications from durable automotive-grade rubber, the seal is designed to withstand high temperatures, vibration, moisture, and environmental exposure. It is an essential component for restoration projects or replacing worn, hardened, or damaged original seals to maintain engine cooling efficiency and engine bay protection.

What This Product Does:

  • Seals the rear perimeter of the engine compartment
  • Helps prevent dirt, water, and debris from entering the engine bay
  • Supports correct engine cooling airflow management
  • Separates hot exhaust air from the engine intake area
  • Helps maintain efficient engine operating temperatures
  • Provides a factory-correct fit and appearance

Symptoms Of Wear Or Failure:
  • Cracked, split, or perished rubber material
  • Hardened, shrunken, or distorted seal profile
  • Visible gaps around the engine compartment perimeter
  • Excessive dirt, dust, or moisture entering the engine bay
  • Reduced effectiveness of engine cooling airflow
  • Hot air recirculation within the engine compartment
  • Loose or detached sections of seal
  • Deteriorated engine bay appearance

Why Replacement Matters:
  • Restores proper engine compartment sealing
  • Helps maintain correct cooling airflow through the engine bay
  • Prevents hot air recirculation that can affect engine temperatures
  • Protects engine components from dirt, moisture, and debris
  • Supports reliable engine performance and longevity
  • Maintains factory-correct fitment and appearance
  • Enhances the quality of restoration and refurbishment projects
  • Provides durable OE-quality performance and long-term reliability



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

93050417001
93050417001

The product you are viewing cross references to these numbers
Special Order item
90151290100
Product Information
Product Information
Engine lid to body seal.

Fits:
Porsche 911 1965-73

Diagram Ref: 28

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

90151290100
90151290100

The product you are viewing cross references to these numbers
90151290100/8
Product Information
Product Information
Engine lid to body seal.

Fits:
Porsche 911 1965-73

Diagram Ref: 28

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

90151290100
90151290100

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 23 products)
1 2
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About Engine Compartment Seals

Porsche Engine Compartment Seals | Design911 Rubber Seals for Cooling, Protection & Performance

Engine compartment seals are a vital component in maintaining your Porsche’s performance, cooling efficiency, and longevity. These precision-moulded rubber seals create a secure barrier between the engine bay and body panels, keeping out dust, debris, heat, and water while directing airflow correctly through the cooling system. A properly sealed engine bay not only protects critical components but also preserves optimal temperature balance for reliable performance.

At Design911, we supply a premium range of engine compartment rubber seals engineered for exact fitment, durability, and long-lasting elasticity. Crafted from high-temperature EPDM or neoprene rubber, each seal is designed to resist heat, oil, and environmental damage. Whether you’re restoring a classic air-cooled 911, maintaining a Cayman, or upgrading your 718 for performance, our engine compartment seals deliver professional-grade protection and performance.

What Do Engine Compartment Seals Do?

Engine compartment seals are designed to create a controlled environment around the engine, ensuring efficient airflow and protection against contaminants.

Core Functions:
• Prevent dirt, dust, and water from entering the engine bay.
• Direct cooling airflow efficiently to the engine and exhaust system.
• Reduce heat transfer to surrounding body panels and interiors.
• Protect wiring, hoses, and sensors from debris and moisture.
• Minimise vibration and maintain structural sealing integrity.

A well-fitted engine compartment seal helps maintain Porsche’s engineering precision — keeping performance consistent under all driving conditions.

Why Do Engine Compartment Seals Fail or Degrade?

Due to constant exposure to heat, oil vapour, and environmental elements, engine seals gradually lose flexibility and sealing effectiveness over time.

Common Causes of Failure Include:
• High heat causing hardening, cracking, or shrinking of rubber.
• Exposure to oil, fuel, and engine chemicals degrading the material.
• Compression fatigue from vibration and pressure changes.
• Age-related deterioration reducing elasticity and sealing contact.
• Incorrect installation or body panel misalignment.

When these seals fail, the engine compartment becomes exposed to moisture, dust, and heat fluctuations — leading to corrosion, overheating, and reduced efficiency.

Why Replace or Upgrade Your Porsche Engine Compartment Seal?

Replacing worn or damaged seals restores the original airflow control and protective sealing that Porsche performance depends on. High-quality replacement materials offer improved resilience against modern fuels, heat, and oil exposure.

Key Benefits:
• Restores proper airflow and cooling efficiency.
• Prevents corrosion, heat damage, and contamination.
• Improves engine bay cleanliness and protection.
• Constructed from high-grade heat- and oil-resistant rubber.
• Available for Porsche 911, 944, 968, Cayman, Boxster, and 718 models.
• Ideal for restorations, engine rebuilds, and performance upgrades.

Design911’s Porsche engine compartment seals ensure your car’s engine remains clean, cool, and protected — preserving both reliability and performance longevity.

Highlights

• Premium Porsche engine compartment and cooling bay rubber seals.
• Heat-, oil-, and weather-resistant construction.
• Improves airflow and prevents contamination.
• Precision-fit for both classic and modern Porsche models.
• Essential for restorations, rebuilds, or maintenance projects.
• Engineered for long-term performance and durability.

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