160F / 71°C Low Temperature Water Thermostat with Insert

Low temperature 160°F / 71°C water thermostat with insert for selected Porsche Boxster and 911 models.

This thermostat replaces the factory 186°F thermostat insert, allowing the cooling system to begin opening at a lower temperature. It is a popular upgrade for owners looking to improve cooling system response, particularly on cars used for spirited road driving or performance use.

Suitable for the following models:

Porsche 986 Boxster 1997–2004
Porsche 996 Carrera 2 / Carrera 4
Porsche 987 Boxster 2005 onwards
Porsche 997 2005–2008

Replaces Porsche part numbers:

99610612552
99610612553

Please note: this thermostat does not fit 2009 onwards DFI engines.

Professional installation by a trained Porsche technician or Porsche service department is recommended. Genuine Porsche coolant should be used when refilling the system.