This 3-wire narrow-band oxygen sensor fits 1983-1986 Alfa Romeo GTV-6, 1986-1989 Alfa Romeo Spider and 1987 Alfa Romeo Milano 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 350-33046 Oxygen Sensor Features:

• Fits 1983-1986 Alfa Romeo GTV-6; 1986-1989 Alfa Romeo Spider; 1987 Alfa Romeo Milano
• Engine coverage includes 2.0L I4, 2.5L 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, 885 mm (34.8 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue