Global Parts 1712509 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for BMW and Audi

Global Parts 1712509 is an engine coolant temperature sensor for select BMW and Audi applications. It provides temperature feedback to the engine management system, helping the ECM manage cooling-related functions and, on earlier vehicles, A/C compressor control.

Key Features

• Engine coolant temperature sensor for cooling system signal input
• M14 - 1.50 thread design
• 2-terminal electrical connection
• Direct-fit style for select BMW 318i, 530i, 740i, 750iL, and Audi S4 applications
• Cross-references Standard Ignition TX51 and Dynomax 36442 for the same application

Detailed Description

This Global Parts coolant temp sensor, part number 1712509, is used to report engine coolant temperature to the vehicle control system. On modern vehicles, that signal supports ECM-managed functions; on earlier platforms, it can also be used in A/C compressor control logic to help prevent compressor damage. It is a fitment-based replacement for select BMW and Audi models, including BMW 318i and Audi S4 applications with the specified thread and connector style.

Compatible With: Fits 1999 BMW 318i, N/A; Fits 1995 Audi S6, N/A; Fits 1994-1995 BMW 530i, N/A; Fits 1994-1995 BMW 840Ci, N/A; Fits 1994-1995 BMW 850CSi, N/A; Fits 1992-1994 Audi S4, N/A; Fits 1990-1994 Audi V8 Quattro, N/A; Fits 1994 BMW 540i, N/A; Fits 1993-1994 BMW 740i, N/A; Fits 1993-1994 BMW 740iL, N/A; Fits 1988-1994 BMW 750iL, N/A; Fits 1993-1994 BMW 850Ci, N/A; Fits 1991-1992 BMW 850i, N/A; Fits 1989-1991 Audi 200 Quattro, N/A; Fits 1990-1991 Audi Coupe Quattro, N/A; Fits 1989 Audi 200, N/A; Fits 1989 Audi 90 Quattro, N/A; Fits 1986-1988 Audi 5000 Quattro, N/A; Fits 1988 Audi 90, N/A; Fits 1988 BMW 528e, N/A; Fits 1984-1987 Audi 4000, N/A; Fits 1987 Audi Coupe, N/A; Fits 1986-1987 BMW 325e, N/A; Fits 1986-1987 BMW 325es, N/A; Fits 1984-1986 Audi 4000 Quattro, N/A; Fits 1985-1986 Audi Coupe, N/A.

What It Can Help Resolve

• Incorrect coolant temperature readings at the ECM
• Cooling fan or temperature-related drivability concerns
• A/C compressor control issues on vehicles that use coolant temperature input
• Hard starting or poor warm-up behavior caused by inaccurate temperature data
• Fault codes related to coolant temperature signal performance

Installation Notes and Tips

Verify the connector style, M14 - 1.50 thread, and 2-terminal configuration before ordering. Match the sensor to the exact vehicle application listed for BMW and Audi models, and confirm the cooling system is cool before removal or installation. For best results, inspect the connector and wiring for corrosion or damage during replacement.

Quality Assurance

Global Parts 1712509 is built as a replacement engine coolant temperature sensor for the listed applications and is backed by the brand’s parts catalog coverage for fitment-specific use.