The oxygen sensor installs on 2000-2001 Infiniti G20, 2000 Nissan Altima, Lucino and 2000-2002 Nissan Sentra. It 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 350-34382 Oxygen Sensor Features:

• Fits 2000-2001 Infiniti G20; 2000 Nissan Altima, Lucino; 2000-2002 Nissan Sentra
• Engine coverage includes 1.8L I4, 2.0L I4, 2.4L I4 applications
• Sensor location by application: B1S2 (bank and sensor number)
• Used in both upstream and downstream positions, depending on application
• 4-wire narrow-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 360 mm (14.2 in.) overall length
• Male square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue