Beck Arnley 158-1000 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for BMW

Beck Arnley 158-1000 is an engine coolant temperature sensor built to meet foreign nameplate OE specifications for form, fit, and function. It is a direct-fit replacement for select BMW models, including BMW X5, 525i, 530i, and 540i applications where accurate coolant temperature input is critical.

• OE-style fit and function for select BMW cooling system applications
• Engine coolant temperature sensor for precise temperature signal input
• Built for foreign nameplate vehicles using Beck Arnley sourcing standards
• Part number 158-1000 for easy catalog matching
• Fits BMW X5, 525i, 530i, 540i, M5, Z8, Z3, 740i, 740iL, 750iL, 528i, 318ti, 323is, 328is, M3, 318i, 323i, 328i, 318is, 840Ci, and 850Ci applications

This Beck Arnley coolant temperature sensor is sourced to match the original equipment specifications used on many BMW cooling system layouts, including cylinder head, thermostat housing, and water pump locations depending on application. If you are replacing a faulty BMW engine coolant temperature sensor on a 2001-2006 BMW X5 or a 2001-2003 BMW 525i or 530i, 158-1000 provides the correct OE-style replacement path.

Common Problems It Can Address

• Incorrect coolant temperature readings at the engine control system
• Hard starting or rough running related to temperature signal errors
• Cooling fan operation concerns tied to sensor input
• Check engine light conditions associated with coolant temperature sensor faults
• Driveability issues caused by inaccurate engine temperature data

Installation Notes and Tips

Verify the sensor location before installation, since fitment notes vary by vehicle and may place the sensor in the cylinder head, thermostat housing, or water pump area. Confirm connector style and thread engagement against the original part before removal, and inspect the cooling system for leaks or damaged wiring while servicing the sensor. For BMW coolant temperature sensor replacement, match the application by year, model, and location to ensure correct installation.

Quality Assurance

Beck Arnley parts are sourced to meet foreign nameplate OE specifications for form, fit, and function. Part number 158-1000 is supported by Beck Arnley’s global sourcing network to help ensure the correct replacement for select BMW applications.