Coolant bleed valve. Porsche Boxster 986 / Boxster 987 / Cayman 987C / 996 / 997

Replacement bleed valve cap with 8 screws and seal.
This coolant bleed valve cap restore proper sealing and pressure control at the coolant bleed valve on Porsche 996, 997 , Boxster and Cayman models. Its mounts to the coolant distribution housing and provides a secure, leak-free closure for the system's air-bleed point. The cap is supplied complete with 8 mounting screws and the required sealing ring, ensuring a precise fit and reliable installation.

Fits:
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.1C Cayman 2005 - 2008

Diagram ref no: 3, 4, 11, 12

This product supersedes Porsche's old part numbers:
- 99610634700
- 99610634701

Manufactured to match Porsche’s original materials and dimensions, this cap resists heat, coolant exposure, and pressure fluctuations. It maintains correct system sealing during coolant expansion and contraction cycles, helping prevent air pockets, coolant leaks, or pressure loss that can compromise engine cooling performance.

A worn or damaged bleed valve cap can cause:
•  Coolant leaks at the bleed housing
•  Loss of system pressure, leading to overheating
•  Difficulty bleeding the cooling system properly
•  Air pockets that reduce coolant circulation and cooling efficiency
Replacing the cap ensures proper cooling-system sealing and prevents costly overheating issues.

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Related, superseded, cross reference or alternative numbers for comparison.

99610634702

The product you are viewing cross references to these numbers