Timing belt, tensioner & idler rollers kit. Porsche 928 1978-86  ❭  92810557100

Timing belt tensioner & idler rollers kit
This timing belt, tensioner, and idler rollers kit is a replacement front engine timing service kit for Porsche 928 models from 1978 to 1986. It includes the RD tooth timing cam belt, camshaft tensioner roller, and camshaft idler roller required for timing belt drive service.

Fits:
Porsche 928 4.5L 1978 - 1982
Porsche 928S 4.7L 1981 - 1983
Porsche 928S2 4.7L 1984 - 1986

Diagram ref no: 1, 9, 10

The kit helps maintain correct camshaft timing, belt routing, and belt tension within the engine timing system. The timing cam belt synchronises crankshaft and camshaft movement, while the tensioner roller and idler roller guide and support the belt as it operates.

Functions
•  Replaces the timing cam belt
•  Includes camshaft tensioner roller
•  Includes camshaft idler roller
•  Supports correct camshaft timing
•  Helps maintain proper belt tension and belt tracking
•  Replaces worn, noisy, rough, seized, or aged timing components
•  Suitable for Porsche 928 timing belt service and preventative maintenance.

Why Replace This Kit?
Timing belt and roller components are exposed to heat, age, mileage, engine load, and constant rotation. A worn timing belt can crack, stretch, lose teeth, or fail without warning, while worn rollers can become noisy, rough, loose, or seized. Replacing the belt and rollers together helps protect the timing system and supports reliable engine operation.

When to Replace This Kit
•   The timing belt service interval is due
•   The timing belt is cracked, worn, contaminated, stretched, or aged
•   Rollers are noisy, rough, loose, or seized
•   Belt tracking or tension issues are present
•   Front engine timing components are being serviced
•   Preventative replacement is being carried out during major maintenance
•   The vehicle is undergoing Porsche 928 engine service or restoration.

Where it fits on the car
This kit fits at the front engine timing belt drive area on Porsche 928 models from 1978 to 1986. It supports the camshaft timing belt system according to the factory timing layout.

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Related, superseded, cross reference or alternative numbers for comparison.

92810557100

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