Thermostat / Temperature Sensor


Fits:
Porsche 95B.2 Macan S / GTS / turbo - 2019 to 2021
Porsche 971.1 Panamera / 4 / 4S / E-Hybrid V6- 2017 to 2020
Porsche 971.2 Panamera / 4 / 4S / E-Hybrid V6 - 2021 to 2023
Porsche 9YA Cayenne / S / E-Hybrid V6 - 2018 to 2023
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Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB121678A
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Engine Thermostats & Temperature Sensors – Precision Cooling Control for Porsche Performance
Engine thermostats and temperature sensors are essential components in your Porsche’s cooling system. Together, they regulate and monitor engine temperature to ensure optimal performance, efficiency, and reliability. The thermostat controls coolant flow through the radiator, while the temperature sensor communicates vital data to the vehicle’s ECU - helping to maintain the perfect balance between power and protection.
At Design911, we supply a wide range of genuine and high-quality thermostats and temperature sensors for Porsche models including transaxle cars, 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each part is engineered to precise standards for seamless integration, fast response, and long-lasting accuracy - ensuring your Porsche performs at its peak in all conditions.
What Do Engine Thermostats & Temperature Sensors Do?
These components work hand-in-hand to manage and monitor
your Porsche’s engine temperature:
- Thermostat:
Opens and closes to regulate coolant flow between the engine and radiator.
- Temperature
Sensor: Measures coolant or cylinder head temperature and sends data
to the ECU to control fans, fuel mixture, and performance parameters.
- Together: They maintain optimal operating temperatures, prevent overheating, and ensure efficient combustion and emissions control.
Without a properly functioning thermostat or temperature sensor, your engine can overheat, run inefficiently, or suffer from poor fuel economy.
Why Do Thermostats & Temperature Sensors Fail?
These components operate under constant thermal stress and
can degrade over time. Common causes of failure include:
- Thermostat
sticking open or closed due to corrosion or wear.
- Sensor
degradation from prolonged exposure to coolant and heat.
- Electrical
faults or corrosion in wiring and connectors.
- Contamination
from old or incorrect coolant types.
- Age-related fatigue causing inaccurate readings or slow response.
Symptoms of failure include fluctuating engine temperatures, warning lights, poor heating performance, or inconsistent fuel economy.
Why Replace Faulty Thermostats & Temperature Sensors?
A malfunctioning thermostat or temperature sensor can severely impact cooling efficiency and engine safety. Replacing worn or faulty parts restores accurate temperature control and helps prevent costly engine damage.
Benefits of replacement include:
- Stable engine operating temperature.
- Improved performance and fuel efficiency.
- Prevention of overheating or over-cooling.
- Manufacturer-quality construction for accuracy and durability.
All thermostats and sensors in this range are built to meet or exceed exacting standards, offering precise calibration, corrosion-resistant materials, and reliable long-term operation.