The Genuine Porsche Engine Coolant Temperature Sensor (part number 99660641000) is a high-quality sensor designed specifically for Porsche vehicles. It is responsible for measuring the temperature of the engine coolant and sending this information to the engine control unit. This helps the engine to run at the optimal temperature for performance and efficiency. The sensor is made with durable materials to withstand the extreme conditions of the engine bay and is a direct replacement for the original sensor. It is compatible with various Porsche models, including the 911, Boxster, and Cayman.