Walker 211-1057 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Mercedes-Benz

Walker Products 211-1057 is an engine coolant temperature sensor built for direct replacement service on a wide range of Mercedes-Benz applications, including S-Class, SL-Class, CL-Class, E-Class, ML-Class, and AMG models. It is also listed for select Chrysler Crossfire and Dodge Sprinter applications. Use this sensor when accurate coolant temperature input is needed for engine management and cooling-system control.

Key Features

• Engine coolant temperature sensor for cooling and engine management systems
• Walker Products replacement part number 211-1057
• Built to meet or exceed OEM standards and specifications
• Supported by Walker Products engineering, product management, and technical documentation
• ISO 9001 and IATF 16949 certified manufacturing
• Fits select Mercedes-Benz, Chrysler, and Dodge applications from 1998-2024

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with a focus on accurate aftermarket replacement parts for modern and legacy vehicles. The Walker Products line includes engine management components such as sensors, injectors, and ignition-related parts, and this coolant temperature sensor follows that same OE-style approach. Part number 211-1057 is listed across multiple Mercedes-Benz platforms, including 2022-2024 Mercedes-Benz Maybach S680, 2018-2019 Mercedes-Benz Maybach S650, 2015-2019 Mercedes-Benz S65 AMG, and earlier S-Class, SL-Class, CL-Class, E-Class, ML-Class, and AMG models. This part cross-references Anchor 9399 for the same application.

What This Sensor Helps Address

• Incorrect coolant temperature readings
• Hard starting or poor cold-engine operation tied to temperature input
• Cooling fan or engine management control issues related to sensor signal
• Check engine light conditions associated with coolant temperature sensor faults
• Driveability problems caused by inaccurate engine temperature data

Installation Notes and Tips

Verify the connector style, sensor location, and engine application before installation. Fitment notes include sensor-only service on several Mercedes-Benz models, and some applications list thermostat housing location. Compare the original sensor to Walker Products 211-1057 and confirm the vehicle year, make, and model before replacement. For best results, inspect the connector and wiring for corrosion or damage during service.

Quality Assurance

Walker Products manufactures to meet or exceed OEM standards and specifications and supports production with in-house engineering and technical resources. The company is ISO 9001 and IATF 16949 certified, reflecting controlled manufacturing and product management processes for engine sensor applications.