Walker 211-91035 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for BMW and Audi

Walker Products FSK 211-91035 is an engine coolant temperature sensor built for select BMW, Audi, and Volkswagen applications. It is a direct-fit replacement for vehicles that rely on accurate coolant temperature input for engine management and gauge operation.

Key Features

• Engine coolant temperature sensor for select import applications
• Walker Products FSK line engineered for engine management service parts
• Built to meet or exceed OEM standards and specifications
• Supports accurate temperature signal input to the vehicle control system
• Cross-references Standard Ignition TX51 and Walker Products 211-91035

Product Details

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on OE-level accuracy. Part number 211-91035 is part of the Walker Products FSK line, which is positioned for dependable sensor replacement in import vehicles where coolant temperature data affects drivability, fuel control, and warning systems. This sensor is listed for applications including 1995 Audi S6, 1992-1994 Audi S4, 1990-1994 Audi V8 Quattro, 1988 Audi 90, 1984-1987 Audi 4000 Quattro, 1986-1987 Audi Coupe, 1994-1995 BMW 530i, 1994-1995 BMW 540i, 1993-1995 BMW 740i and 740iL, and 1988-1994 BMW 750iL. It also covers select Volkswagen Golf and Quantum applications. If you are searching for a BMW coolant temperature sensor or an Audi engine coolant temperature sensor, 211-91035 is the cataloged replacement to verify against your original part.

Common Uses

• Corrects inaccurate coolant temperature readings
• Addresses hard starting or poor cold-engine fuel control caused by faulty temperature input
• Helps resolve temperature gauge or warning light concerns
• Supports stable engine management on BMW 530i, 540i, 740i, and 740iL applications
• Supports Audi S4, S6, and V8 Quattro cooling-system sensor replacement needs

Installation Notes

Verify connector style, thread size, and original part number before installation. Compare the removed sensor to Walker Products 211-91035 and confirm vehicle application by year, make, and model. Clean the mounting area and inspect the cooling system for leaks or damaged wiring before installing the replacement sensor.

Quality Assurance

Walker Products is an ISO 9001/IATF16949 certified manufacturer with in-house product management and engineering support. The company states its engine sensors are produced to meet or exceed OEM standards and specifications for accurate fitment and performance.