Camshaft Belt – Maintenance Intervals and Part Numbers

Overview

The camshaft belt (also referred to as the timing belt) is a critical component in the Porsche 944 S2’s 3.0L engine, ensuring proper synchronization between the crankshaft and camshafts. Regular inspection and replacement of the camshaft belt are essential to prevent catastrophic engine failure, as the 3.0L S2 is an interference engine where a belt failure can lead to severe damage. This procedure outlines the maintenance intervals and part numbers specific to the 1989–1991 Porsche 944 S2, ensuring proper upkeep of the timing system for optimal performance and reliability.

Maintenance Intervals

The following maintenance schedule is based on factory recommendations for the Porsche 944 S2 (3.0L engine) with guidance for limited-use vehicles. Always consult your vehicle’s service history and a qualified mechanic for specific needs.

Note: For vehicles with limited use, inspect the camshaft belt after two years if 15,000 miles has not been reached, and annually thereafter.

Parts

The following parts are specific to the Porsche 944 S2 (3.0L engine, 1989–1991). Always verify part numbers with your supplier, as specifications may vary based on engine or production changes.

Replace at Each Camshaft Belt Change

Inspect and Replace Based on Condition

Note: The 944 S2 uses a spring-loaded tensioner system, eliminating the need for a tensioner stud replacement, unlike earlier 944 models.

Sources

• Clark’s Garage
• Pelican Parts
• Porsche 944 Workshop Manuals
• YouTube