This 3-wire narrow-band oxygen sensor fits 1992 Audi 100, 1992-1993 Audi 100 Quattro, 1993 Audi 90 Quattro and 1985 Peugeot 505 in the upstream position and signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-33017 Oxygen Sensor Features:

• Fits 1992 Audi 100; 1992-1993 Audi 100 Quattro; 1993 Audi 90 Quattro; 1985 Peugeot 505
• Engine coverage includes 2.2L I4, 2.8L V6 applications
• Sensor location by application: B1S1 (bank and sensor number)
• 3-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 505 mm (19.9 in.) overall length
• Male rectangle connector at the harness end with 3 spade terminals
• Platinum electrode layer with a protective coating against combustion residue