Oil Pressure Relief Valve

Overview

The oil pressure relief valve in the Porsche 944 S / S2 (16v engine, 1989–1991) is a critical component that regulates oil pressure within the engine to prevent damage from excessive pressure. This procedure provides guidance on identifying and replacing the one-piece oil pressure relief valve specific to the 16v engine, ensuring proper function and alignment during installation. Proper maintenance of this valve is essential for engine longevity and performance, particularly during oil cooler seal repairs or when addressing oil pressure issues.

Oil Pressure Relief Valve Information

The Porsche 944 S / S2 (16v) uses a one-piece oil pressure relief valve with part number 944 107 035 02. This valve is corrosion-treated to enhance durability and reduce the risk of failure. Each relief valve requires an O-ring (944 107 935 11) and an aluminum seal ring (N 043 815 3), which should be replaced whenever the valve is removed.

Note: Proper alignment of the oil cooler housing is critical when installing the relief valve to prevent binding. Use special alignment tool 9262/1 during installation to ensure correct positioning.

Relief Valve Application for 944 S2

Installation Considerations

When replacing the oil pressure relief valve on a 944 S / S2, ensure the correct valve (944 107 035 02) is used, as it is not interchangeable with other relief valves due to length differences. Always replace the O-ring and aluminum seal ring during installation. An alignment tool (9262/1) is required to properly align the oil cooler housing to prevent valve binding, which could lead to oil pressure issues.

It is recommended to replace the relief valve during oil cooler seal repairs or at the first sign of oil pressure-related problems to maintain optimal engine performance.

Sources

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