Walker 211-2177 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Audi A8

Walker 211-2177 is a direct-fit engine coolant temperature sensor for 1997-1999 Audi A8 and Audi A8 Quattro applications. It provides the ECM with real-time coolant temperature data so the engine can manage fuel delivery, ignition timing, cold-start enrichment, and cooling fan operation.

Walker Products Sensor Only line focuses on OE-style replacement sensors built for factory-style signal accuracy and straightforward installation. This Walker coolant temperature sensor is engineered for the 2-pin square connector used on the listed Audi A8 models.

Key Features

• Engine coolant temperature sensor for ECM temperature input
• Direct-fit design for 1997-1999 Audi A8 and Audi A8 Quattro
• Blade terminal type with 2 terminals
• Square female connector for a factory-style connection
• Heat-resistant construction for continuous coolant-system exposure
• Matches OE resistance values, thermal response, and signal output
• Walker 211-2177 replacement sensor for diagnostic and drivability repairs

Detailed Description

Walker 211-2177 is built to replace the engine coolant temperature sensor used on 1997-1999 Audi A8 and Audi A8 Quattro models with a 2-pin sensor-only setup. The sensor sends temperature data to the ECM, which uses that information to adjust fuel injection, ignition timing, cold-start enrichment, and radiator fan control. Accurate coolant temperature input is critical for stable operation and emissions control.

The Sensor Only product line from Walker Products is focused on OE-style electrical performance and fit. This part number, 211-2177, is engineered to match factory resistance and signal characteristics so it integrates with the original vehicle system without modification. If you are replacing a failed sensor on an Audi A8 or Audi A8 Quattro, this part supports a clean, direct replacement path.

This part cross-references 1TS1384 and WT5050 for the same application.

What It Helps Solve

• Check engine light related to coolant temperature sensor faults
• Hard starting during cold engine operation
• Incorrect fuel mixture caused by inaccurate temperature input
• Unstable idle or drivability issues after warm-up
• Cooling fan control problems tied to temperature signal errors

Installation Notes and Tips

Fits 1997-1999 Audi A8, N/A. Fits 1997-1999 Audi A8 Quattro, N/A. Confirm the connector style before installation: this sensor uses a square female connector with two blade terminals and does not include a wiring harness. Inspect the cooling system connector and sealing surfaces before installing Walker 211-2177.

Quality Assurance

Walker Products designs this coolant temperature sensor to meet OE specifications for resistance, thermal response, and signal output. Durable, heat-resistant materials are used to handle coolant exposure, vibration, and repeated temperature changes in normal engine operation.