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Engine Compartment Seals
Fits:
Porsche 911 / 912 - 1965 to 1989
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90155689120
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Fits:
Porsche 911 1965-89
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91155689101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
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Related, superseded, cross reference or alternative numbers for comparison.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
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 1965-73
Diagram Ref: 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91150411500
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Fits:
Porsche 911 1965-73
Diagram Ref: 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91150411500
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Fits:
Porsche 911 1965-89
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91150411102
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 1965-89
Diagram Ref: 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91150411102
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 1965-73
Diagram Ref: 28
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90151290100
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Restore a secure, properly cushioned seal between the engine lid and surrounding bodywork with this OE Match Engine Lid to Body Seal. Designed for compatible classic Porsche applications, this seal fits around the engine lid opening and provides a flexible barrier between the closing panel and the vehicle body.
Fits:
Porsche 911 1965-73
Diagram Ref No 28
The engine lid seal performs several important functions. It helps prevent water, dirt and road contamination from entering around the lid opening, while also cushioning contact between adjoining panels. When correctly fitted, it contributes to a clean, properly finished engine compartment and helps minimise unwanted vibration and rattling.
What This Product Does:
- Seals the gap between the engine lid and surrounding bodywork.
- Helps prevent water entering around the engine lid opening.
- Reduces dirt, dust and debris entering through panel gaps.
- Provides cushioning between the engine lid and body.
- Helps reduce unwanted vibration and rattling.
- Supports correct seating of the engine lid when closed.
- Helps protect surrounding painted surfaces from unnecessary contact.
- Contributes to a clean and properly finished engine compartment.
- Replaces a hardened, cracked, flattened, shrunken or missing seal.
- Restores an OE-style appearance for compatible classic Porsche applications.
Symptoms Of Wear Or Failure:
- Visible cracks or splits in the rubber.
- Rubber that has become hard or brittle.
- Flattened areas that no longer recover after compression.
- Shrinkage creating gaps around the engine lid opening.
- Sections of the seal pulling away from the body.
- Torn or missing sections.
- Water entering around the engine lid.
- Excessive dirt or debris entering the engine compartment.
- Increased rattling or vibration from the engine lid.
- The lid contacting surrounding bodywork.
- Deterioration or discolouration affecting the vehicle's appearance.
- A damaged seal discovered during bodywork or engine compartment restoration.
Why Replacement Matters:
- The engine lid seal must remain flexible to conform to the shape of the lid and body aperture. Once the rubber becomes hard, compressed or damaged, gaps can develop that reduce its ability to provide effective protection.
- Water entering through these gaps can contribute to corrosion and deterioration of surrounding metalwork, fittings and components. Dirt and debris can also accumulate within the engine compartment, making maintenance more difficult and affecting the appearance of a restored vehicle.
- The seal also acts as a cushion when the engine lid is closed. A deteriorated or missing seal may allow excessive panel movement, contributing to rattles and potentially allowing painted surfaces to contact one another.
- On a classic Porsche, rubber seals are also important visual finishing components. Fresh, correctly fitted sealing rubber provides a much cleaner appearance than an old seal that has cracked, shrunk or become distorted.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90151290100
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
length: 1 METER.

Fits:
Porsche 911 2.0-3.3 01/63-07/89
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90150179720
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Length: 1 METER.
The OE MATCH Rear Profile Rail for Engine Bay Seal is a replacement retaining rail designed to secure the engine bay sealing profile in its correct position. Located at the rear of the engine compartment, this rail forms part of the engine bay sealing system and provides the correct mounting channel and support for the rubber seal.
Fits:
- Porsche 911 2.0-3.3 01/63-07/89
Diagram Ref No 4
On older classic Porsche models, the original rail can become corroded, bent, damaged or weakened, particularly after decades of exposure to moisture, engine heat and previous repair work. This OE MATCH replacement is ideal for restoration work or when renewing the surrounding engine bay seals and bodywork.
What This Product Does:
- The profile rail acts as a retaining and locating channel for the engine bay rubber seal. It holds the seal securely against the bodywork so that it can maintain the intended separation between the engine compartment and surrounding body panels.
- A correctly fitted rail helps the rubber sealing profile sit at the proper height, position and orientation, preventing sections of the seal from becoming loose, displaced or incorrectly seated.
- Although simple in design, the rail is an important supporting component of the engine bay sealing arrangement. A new rubber seal cannot perform as intended if the rail securing it is badly corroded, distorted or missing.
Symptoms Of Wear Or Failure:
Because the profile rail is a structural retaining component rather than a conventional moving part, deterioration is usually visible during inspection or when removing the engine bay seal.
Common signs that replacement may be required include:
- Rust or corrosion along the profile rail
- Perforation or severe metal deterioration
- Rail becoming bent, crushed or distorted
- Engine bay seal repeatedly coming loose
- Rubber seal no longer sitting evenly in its channel
- Sections of the retaining rail becoming detached
- Damage caused during previous bodywork or restoration
- Missing sections of the original rail
- Difficulty installing or retaining a replacement engine bay seal
- Poor or inconsistent sealing around the rear engine compartment
Corrosion can be particularly problematic because deterioration may be hidden beneath or behind the rubber sealing profile until the seal is removed.
Why Replacement Matters:
- A damaged profile rail can prevent the engine bay seal from being securely and correctly installed. Even a new seal may lift, move or sit incorrectly when fitted into a deteriorated retaining channel.
- Replacing the rail provides a sound mounting surface for the engine bay seal and helps restore the original sealing arrangement of the engine compartment. Correct sealing is important for managing the airflow and separation intended by the vehicle's original engine bay design, as well as helping limit the transfer of dirt, debris and moisture through unwanted gaps.
- Addressing corrosion at the rail also matters during restoration. Leaving a badly rusted retaining section in place can compromise otherwise good bodywork and make future seal replacement more difficult.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90150179720
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
This is a brand new part which has not been fitted. The glue has gone off and would need to be reapplied. Ideal for restoration specialists, collectors, or workshops looking for components at reduced cost.
Condition:
It has some fitting imperfections but in good / reusable working order. Please see the gallery of images before purchasing.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91155689101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Perfect for sealing weatherstripping to door, hood, and trunk panels.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330532
The product you are viewing cross references to these numbers
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.