The 2-wire narrow-band oxygen sensor is a replacement sensor for 1990-1992 Geo Prizm and Toyota Corolla with the 1.6L I4 engine in the upstream position. It signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery.

Walker Products 350-32019 Oxygen Sensor Features:

• Fits 1990-1992 Geo Prizm, Toyota Corolla with the 1.6L I4 engine
• Sensor location by application: B1S1 (bank and sensor number)
• 2-wire narrow-band oxygen sensor
• Unheated design
• Flange-mount body
• Overall length of 425 mm (16.7 in.)
• Male/female oblong connector at the harness end with 2 spade terminals
• Platinum electrode layer with a protective coating against combustion residue