Facet 7.3171 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Audi and Volkswagen

Facet 7.3171 is an engine coolant temperature sensor for select Audi and Volkswagen applications. It provides the temperature signal used by the engine management system to monitor coolant conditions and support proper fuel and ignition control. This Facet 7.3171 sensor is a direct-fit option for many 1985-1998 Audi A6 Quattro, Audi 100, Audi 90, Volkswagen Golf, and Volkswagen Jetta applications.

Key Features

• Engine coolant temperature sensor for cooling system temperature monitoring
• White color specification noted for fitment verification
• Direct replacement style for select Audi and Volkswagen models
• Fits a wide range of 1985-1998 import applications
• Facet 7.3171 part number for catalog matching and ordering

Detailed Description

Use Facet 7.3171 when replacing a faulty engine coolant temperature sensor on compatible Audi and Volkswagen vehicles. Accurate coolant temperature input is important for engine control strategy, including cold-start behavior, warm-up operation, and temperature-based fuel management. This part number is commonly searched for Audi A6 Quattro, Audi Cabriolet, Audi 100 Quattro, Volkswagen Passat, and Volkswagen Fox applications, as well as other listed models. If you are sourcing Facet 7.3171 for an Audi 90 Quattro or Volkswagen Jetta, verify the white color note against the original part before installation.

Vehicle Fitment

• Fits 1995-1998 Audi A6 Quattro, N/A, Color-White
• Fits 1994-1998 Audi Cabriolet, N/A, Color-White
• Fits 1995-1997 Audi A6, N/A, Color-White
• Fits 1993-1995 Audi 90, N/A, Color-White
• Fits 1993-1995 Audi 90 Quattro, N/A, Color-White
• Fits 1992-1994 Audi 100, N/A, Color-White
• Fits 1992-1994 Audi 100 Quattro, N/A, Color-White
• Fits 1987-1993 Volkswagen Fox, N/A, Color-White
• Fits 1990-1993 Volkswagen Passat, N/A, Color-White
• Fits 1985-1992 Volkswagen Golf, N/A, Color-White
• Fits 1985-1992 Volkswagen Jetta, N/A, Color-White
• Fits 1988-1989 Audi 80, N/A, Color-White
• Fits 1985-1987 Audi 4000, N/A, Color-White
• Fits 1985-1987 Audi Coupe, N/A, Color-White

Common Replacement Reasons

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting or rough cold operation tied to temperature signal loss
• Fuel mixture or idle issues related to coolant sensor failure
• Cooling fan or engine management concerns caused by inaccurate temperature input
• Replacement during cooling system service on older Audi and Volkswagen models

Installation Notes and Tips

Confirm the original sensor color and connector style before ordering, since this listing notes a white sensor. Compare the old part number and vehicle application to the fitment list for the best match. Inspect the connector, wiring, and coolant condition during replacement to avoid repeat temperature-signal problems.

Quality Assurance

Facet is an established aftermarket brand for engine management and sensor applications. Part number 7.3171 is cataloged for the listed Audi and Volkswagen fitments and should be matched to the vehicle application before installation.