Torsion bar cover. Porsche 911 1965-86 915 gearbox  ❭  90150407900

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