bracket Genuine Porsche part 99610641200

Code: 99610641200

Genuine Porsche part

bracket

The product code 99610641200 was also found on these diagrams

105-10 - support

water cooling - 2 - for 986 Boxster 1997-04

Additional information:

• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.

Before purchasing thoroughly check part to confirm compatibility.

Related products

4 4 4 4

Coolant reservoir / expansion tank cap. Porsche Boxster 986 / Boxster 987 / Cayman 987C / 996 / 997

99610644704/1

Product Information

Replacement Coolant reservoir / expansion tank cap.
This coolant expansion tank cap is a direct replacement for Porsche 996 (1998–2005) and also fits Boxster (986/987), Cayman, and 997 models, upgrading earlier versions with improved sealing and pressure control.

Fits:
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2005 - 2008

Diagram ref no 5

This cap serves as the pressure seal for the coolant expansion tank, keeping the cooling system at the correct pressure. It regulates venting to the overflow reservoir, preventing blowback, leaks, and overpressure while helping avoid coolant loss, boiling, and overheating.

It replaces earlier versions: 99610644700, 99610644701, 99610644702, 99610644703

Why replacement matters:
• An old or worn cap may fail to hold pressure, causing coolant to boil, vaporize, or overflow
• A bad cap can allow air to enter the cooling system, leading to overheating, hot spots, or poor cooling performance
• A leaking or weak cap can lead to gradual coolant loss, requiring refills and risking engine damage

Installing an OE-Match version restores proper pressure control, reliable sealing, and helps maintain engine temperature stability.

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Related, superseded, cross reference or alternative numbers for comparison.

99610644704

99610644704

99610644703

99610644702

99610644701

99610644700

171121321D

The product you are viewing cross references to these numbers

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bracket Genuine Porsche part 99610641200