Genuine 99660640501 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Porsche

This Genuine engine coolant temperature sensor is a direct-fit replacement for select Porsche applications. It is listed for the 2005 Porsche 911 and 1997-1999 Porsche Boxster, making it a focused choice for owners searching for a Porsche 911 coolant temperature sensor or a Boxster engine coolant temperature sensor by part number 99660640501.

Key Features

• Genuine OE replacement engine coolant temperature sensor
• Part number 99660640501
• Fits 2005 Porsche 911
• Fits 1997-1999 Porsche Boxster
• Direct fit for coolant temperature monitoring in the engine cooling system

Product Details

The engine coolant temperature sensor reports coolant temperature to the vehicle’s engine management system so it can manage fuel delivery, ignition timing, and cooling strategy. For Porsche 911 and Porsche Boxster models, accurate temperature input is important for stable drivability and proper cooling-system operation. If you are replacing a faulty Porsche coolant temp sensor, 99660640501 is the OE-style part number to verify against your original component.

Common Issues This Part May Address

• Erratic or inaccurate coolant temperature readings
• Illuminated check engine light related to coolant temperature data
• Hard starting or rough running when the engine is cold
• Cooling fan behavior that does not match engine temperature
• Incorrect temperature information sent to the gauge or control module

Installation Notes and Tips

Confirm the connector style and sensor location on the vehicle before installation. Drain coolant as needed to access the sensor, and inspect the sealing surface and surrounding cooling components during replacement. After installation, refill and bleed the cooling system according to Porsche service procedures to remove trapped air and verify normal temperature readings.

Quality Assurance

Genuine parts are built to OE specifications for the listed applications. Verify fitment by matching the part number 99660640501 to your original sensor and confirming the vehicle year and model before ordering.