The 1-wire narrow-band oxygen sensor is a replacement sensor for select 1985-2003 Dodge, Eagle, Hyundai, Mitsubishi and other applications in the upstream position. It signals whether the exhaust is running rich or lean so the engine computer can trim fuel delivery.

Walker Products 350-31026 Oxygen Sensor Features:

• Fits 1987-1990 Dodge Colt, Mitsubishi Van, Plymouth Colt; 2003 Dodge H100; 1989-1990 Eagle Summit, Hyundai Sonata; 1986-1993 Hyundai Excel; 1991-1993 Hyundai Scoupe
• Fits 1985-1987 Mitsubishi Galant; 1987-1989 Mitsubishi Mirage; 1987-1993 Mitsubishi Precis; 1990 Mitsubishi Eclipse, Plymouth Laser
• Engine coverage includes 1.5L I4, 1.6L I4, 1.8L I4, 2.0L I4, 2.4L I4 applications
• Sensor location by application: B1S1 (bank and sensor number)
• 1-wire narrow-band oxygen sensor
• Unheated design
• M18x1.5 threaded mounting with a 22 mm hex, 775 mm (30.5 in.) overall length
• Female circle connector at the harness end with 1 spade terminals
• Platinum electrode layer with a protective coating against combustion residue