Walker Products Engine Coolant Temperature Sensor 211-2177 for 1997-1999 Audi 3.7L 4.2L (A8, A8 Quattro)

The Walker Products Engine Coolant Temperature Sensor (part number 211-2177) is a direct-fit replacement for 1997-1999 Audi vehicles with 3.7L and 4.2L engines. Walker Products Engine Coolant Temperature Sensors match OE performance to deliver accurate data for engine protection, fuel control, and emissions management.

Features:

• Monitors engine coolant temperature to optimize fuel delivery and ignition timing.
• Enables ECM to protect engine from overheating and improve cold starts.
• Direct-fit replacement simplifies installation and restores sensor function.
• Built to match OE specifications for signal response and thermal accuracy.
• Durable materials ensure long service life in hot, high-vibration environments.

Specifications:

Fits: 1997-1999 Audi models including A8 and A8 Quattro — 3.7L and 4.2L engines.

Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.

Fitment Notes: Color-Green

Interchanges With: Audi 077919501C, MTE-THOMSON 4210, Motorad 1TS1384, NTK EF0081, BWD WT5050

WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.