The 3-wire narrow-band oxygen sensor is a replacement sensor for 1986 Nissan 300ZX, Maxima, Stanza, 1987 Nissan Pulsar NX, 1995-1996 Nissan 200SX, 240SX and 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 350-33024 Oxygen Sensor Features:

• Fits 1986 Nissan 300ZX, Maxima, Stanza; 1987 Nissan Pulsar NX; 1995-1996 Nissan 200SX, 240SX, Sentra
• Engine coverage includes 1.6L I4, 2.0L I4, 2.4L I4, 3.0L V6 applications
• Sensor locations by application: B1S1, B1S2 (bank and sensor number)
• Used in both upstream and downstream positions, depending on application
• 3-wire narrow-band oxygen sensor
• Titania sensing element
• Built-in heater for fast warm-up
• M12x1.25 threaded mounting with a 17 mm hex, 240 mm (9.4 in.) overall length
• Male/female oblong connector at the harness end with 3 spade terminals
• Platinum electrode layer with a protective coating against combustion residue