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Torsion Bar Cover Gasket - fits Left or Right Hand Side
Sold each - 2 required per car

Maintain the integrity and protection of your classic Porsche suspension system with this OE Match Torsion Bar Cover Gasket. Designed for Porsche 911 models from 1965 to 1986 fitted with the 915 gearbox, this gasket sits between the torsion bar cover and the vehicle body, helping to create a protective seal around the torsion bar access area.

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

Diagram ref no 34

Although small and often overlooked, the torsion bar cover gasket plays an important role in preventing moisture, dirt, road debris and contaminants from entering the torsion bar housing area. By helping to seal the cover correctly, it contributes to the long-term preservation of the suspension components and surrounding body structure.

Ideal for restoration projects, suspension overhauls and routine maintenance, replacing the gasket whenever the torsion bar cover is removed helps maintain factory levels of protection and fitment.

What Does a Torsion Bar Cover Gasket Do?

The torsion bar cover gasket creates a sealing barrier between the torsion bar cover and the body shell.

Its primary functions include:

• Helping prevent moisture ingress
• Reducing dirt and debris contamination
• Protecting torsion bar components
• Supporting corrosion prevention
• Improving cover fitment
• Reducing water retention around the torsion tube area
• Maintaining factory sealing standards

The gasket helps ensure the torsion bar access area remains protected from environmental exposure.

Why Do Torsion Bar Cover Gaskets Fail?

Over time, rubber, cork or gasket materials naturally deteriorate due to age and environmental conditions.

Common causes of failure include:

• Age-related hardening
• Compression over time
• Moisture exposure
• Heat cycling
• Damage during removal
• Corrosion around mounting surfaces
• Long-term environmental exposure
• Restoration work requiring removal

Once compressed or damaged, the gasket can lose its ability to seal effectively.

When Should the Gasket Be Replaced?

The gasket should always be inspected whenever the torsion bar cover is removed.

Replacement is recommended when:

• Performing suspension repairs
• Replacing torsion bars
• Carrying out restoration work
• The gasket shows signs of cracking
• The gasket becomes compressed or flattened
• Water ingress is visible
• Corrosion is present around the cover
• The original gasket is missing

Many Porsche specialists automatically replace these gaskets during suspension refurbishment projects.

Why Replacement Matters

A worn or damaged gasket can allow moisture and contaminants to enter the torsion bar housing area.

Benefits of replacement include:

• Improved sealing performance
• Better protection against moisture
• Reduced corrosion risk
• Protection of suspension components
• Improved restoration quality
• Correct cover fitment Long-term durability
• Restoration of factory standards

Replacing the gasket is a simple and cost-effective way to help preserve the rear suspension structure of your classic Porsche.

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90150475901

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Torsion Bar Cover with Gasket - fits Left or Right Hand Side
Sold each - 2 required per car

Restore factory appearance and protect key rear suspension areas with this OE Match Torsion Bar Cover for Porsche 911 models from 1965 to 1986 fitted with the 915 gearbox. This cover is fitted around the torsion bar access area and helps protect the torsion bar tube and surrounding bodywork from dirt, moisture, road debris and corrosion.

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

Diagram ref no 28

The torsion bar system is a vital part of the classic Porsche 911 rear suspension design. The cover helps close and protect the access point used for torsion bar servicing and adjustment, preserving both the structure and appearance of the vehicle.

Over time, original covers can corrode, become damaged, distort or go missing during previous repairs. Replacing worn or damaged covers helps improve protection, restoration quality and long-term durability.

What Does a Torsion Bar Cover Do?

The torsion bar cover protects the torsion bar access area and surrounding rear suspension structure.

Its main functions include:

• Protecting the torsion bar access point
• Helping shield suspension components from road debris
• Reducing dirt and moisture exposure
• Supporting factory-correct body appearance
• Helping prevent corrosion around the torsion tube area
• Providing access for torsion bar servicing when removed

Why Do Torsion Bar Covers Fail?

Torsion bar covers are exposed to road spray, moisture, dirt and age-related corrosion.

Common causes of failure include:

• Rust and corrosion
• Stone impact damage
• Poor previous repairs
• Distortion during removal
• Missing or seized fixing hardware
• Long-term exposure to road salt and moisture
• General age-related deterioration

When Should It Be Replaced?

Replacement is recommended when the cover is damaged, corroded or missing.

Common signs include:

• Visible rust
• Damaged or distorted cover
• Missing cover plate
• Poor fitment
• Corrosion around fixing points
• Restoration or repainting work
• Rear suspension or torsion bar servicing

Why Replacement Matters

A damaged or missing torsion bar cover can leave the suspension access area exposed to moisture and debris.

Benefits of replacement include:

• Restores factory appearance
• Helps protect rear suspension areas
• Reduces corrosion risk
• Improves restoration quality
• Supports long-term body protection
• Ideal during torsion bar or suspension servicing       

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Fits:
Porsche 911 / 912 - 1965  to 1989

Click 'Zoom in' for large parts diagram.
Diagram ref no 1 (front section of it)

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Fit:
Porsche 911 Coupe 2.0L-3.3L 01/1963-07/1989

Fits 911 F model from 1964-73. 
Will also fit 911 G model from 1974-1989 but with modifications to holes for washer nozzles

Click 'Zoom in' for large parts diagram.
Diagram ref no 2.

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