Walker 211-2109 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for BMW X5

Walker 211-2109 is a sensor-only engine coolant temperature sensor for the 2014-2018 BMW X5. It sends real-time coolant temperature data to the ECM so the engine can manage fuel delivery, ignition timing, cold-start enrichment, and cooling fan operation.

Sensor Line Details

Walker’s Sensor Only line focuses on direct replacement sensors built to OE-style resistance values, thermal response, and signal output. For BMW X5 coolant temperature sensor replacement, that means a part designed to integrate with factory electronics without requiring harness changes or custom wiring.

Key Features

• Part number 211-2109 engine coolant temperature sensor
• Fits 2014-2018 BMW X5, sensor only
• 2-pin terminal design with oblong female connector
• Direct-fit replacement for factory-style installation
• Heat-resistant construction for coolant and vibration exposure
• No wiring harness included

Detailed Description

Walker 211-2109 monitors coolant temperature and reports that data to the ECM so the vehicle can adjust operating strategy as temperatures change. Accurate coolant temperature input is important for drivability, emissions control, fuel economy, and fan control, especially on a BMW X5 that depends on precise sensor feedback for normal engine management. This sensor is built for the 2014-2018 BMW X5 application and uses a pin terminal layout with an oblong female connector for OE-style fitment.

This part cross-references Dorman HELP 82433 for the same application.

Common Issues This Sensor Can Help Address

• Check engine light related to coolant temperature signal faults
• Hard cold starts or extended warm-up behavior
• Incorrect fuel mixture caused by inaccurate temperature input
• Cooling fan operation that does not match engine temperature
• Poor fuel economy or rough running when the ECM receives bad temperature data

Installation Notes and Tips

Confirm connector shape, terminal count, and sensor location before installation. This Walker 211-2109 coolant temperature sensor uses a 2-pin female connector and does not include a wiring harness, so the existing vehicle connector must be in good condition. Verify the cooling system is at a safe temperature before removing the old sensor, and inspect the connector and sealing surfaces for corrosion or damage during service.

Quality Assurance

Walker Products engineers these sensors to match OE specifications for resistance, thermal response, and signal output, supporting reliable communication with factory engine management systems. Durable, heat-resistant materials are used to withstand constant coolant exposure, vibration, and temperature swings.