The 2-wire narrow-band oxygen sensor is a replacement sensor for 1988 Mitsubishi Galant and 1989-1990 Mitsubishi Sigma with the 3.0L V6 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 350-32008 Oxygen Sensor Features:

• Fits 1988 Mitsubishi Galant; 1989-1990 Mitsubishi Sigma with the 3.0L V6 engine
• For non-California emissions vehicles
• 2-wire narrow-band oxygen sensor
• Unheated design
• M18x1.5 threaded mounting with a 22 mm hex, 200 mm (7.9 in.) overall length
• Female oblong connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue