Keep your engine computer supplied with accurate coolant temperature data with the Walker Products Engine Coolant Temperature Sensor 211-2177. It is a direct-fit replacement for the 1997-1999 Audi A8 with the V8-3.7L engine and the 1997-1999 Audi A8 Quattro with the V8-4.2L engine. The listed applications use one sensor each.
This sensor reports real-time cooling-system temperature to the engine control module (ECM). The ECM uses that reading for fuel injection, ignition timing, cold-start enrichment, and cooling fan operation. Walker engineers each sensor to match OE specifications for resistance values, thermal response, and signal output, for integration with factory systems.
- Temperature monitoring: Tracks engine coolant temperature so the ECM can manage fuel delivery and ignition timing.
- Engine protection: Supplies the data the ECM relies on to help guard against overheating and to support cold starts.
- Direct-fit design: Designed to install with no modifications required.
- Heat-resistant build: Made from durable, heat-resistant materials. It is intended to withstand constant coolant exposure, vibration, and extreme temperature swings.
Specifications: 2 blade terminals; female, square connector; wiring harness not included. Country of origin: Brazil.
Signs this sensor may need replacing include a check engine light, hard cold starts, rough idle, poor fuel economy, or a cooling fan that doesn't run as expected. These symptoms can have other causes, so diagnose the fault first. If a failed coolant temperature sensor is the cause, this unit replaces it.
Interchange: 077919501C · WT5050 · 4210 · 1TS1384 · EF0081
This part cross-references / interchanges with the following part numbers:
077919501C, WT5050, 4210, 1TS1384, EF0081
Frequently Asked Questions
Which vehicles does this sensor fit?
It fits the 1997-1999 Audi A8 with the V8-3.7L engine and the 1997-1999 Audi A8 Quattro with the V8-4.2L engine. Each listed application uses one sensor.
What does an engine coolant temperature sensor do?
It sends real-time coolant temperature data to the ECM. The ECM uses that data for fuel injection, ignition timing, cold-start enrichment, and cooling fan operation.
Does the Walker Products 211-2177 include a wiring harness?
No, a wiring harness is not included. The sensor has 2 blade terminals in a female, square connector.
What are signs of a failing coolant temperature sensor?
Possible signs include a check engine light, hard cold starts, rough idle, poor fuel economy, or irregular cooling fan operation. These can have other causes, so diagnose before replacing.
What part numbers does this sensor interchange with?
It cross-references 077919501C, WT5050, 4210, 1TS1384, and EF0081.
