Timing Belt Tensioner Boot. Porsche 928 1983-95  ❭  92810555208

Cam Belt Tensioner Boot 

High-quality replacement boot for the cam belt tensioner, designed for Porsche 928 models.

This component forms part of the tensioner assembly and protects the internal mechanism from dirt, moisture, and debris. It is essential for maintaining correct tensioner operation and ensuring long-term reliability of the timing belt system.

Fits:

• Porsche 928S 4.7L 1983
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95

Diagram ref no 23

Model years 1983-1986 - Please compare the rolling diaphragm with your old part, as there are different versions

Technical Specifications

• Height: approx. 18mm
• Outer diameter: approx. 49mm
• Inner diameter: approx. 20mm

As part of routine maintenance, the tensioner should be serviced and the boot replaced every time the timing belt is changed, helping to prevent premature wear and potential engine damage.

This boot provides precise fitment and durability—ideal for both scheduled servicing and full engine maintenance.

Key Features

• Cam belt tensioner protective boot
• Essential for timing belt service
• Protects tensioner internals from contamination
• Maintains correct tensioner function
• OEM-style fit and performance
• Durable construction for long-term reliability

Function and Purpose

This boot is a critical protective component within the timing system.

It helps to:

• Seal and protect the tensioner mechanism
• Prevent ingress of dirt and moisture
• Maintain smooth tensioner operation
• Support correct timing belt tension

Why Replace the Tensioner Boot

The boot is subject to heat and ageing within the engine bay.

Common issues include:

• Cracking or splitting
• Loss of sealing capability
• Contamination of tensioner components
• Reduced tensioner performance

Replacing the boot during timing belt service helps ensure reliable engine operation and longevity.

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Related, superseded, cross reference or alternative numbers for comparison.

92810555208

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