This 4-wire narrow-band oxygen sensor fits select 1993-2000 Lexus and Toyota applications and 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 350-34253 Oxygen Sensor Features:

• Fits 1996-1997 Lexus LX450; 1993-1994 Toyota T100; 1994-1997 Toyota Previa; 1995-1997 Toyota Land Cruiser; 1995-2000 Toyota Tacoma; 1996-2000 Toyota 4Runner
• Engine coverage includes 2.4L I4, 2.7L I4, 3.0L V6, 3.4L V6, 4.5L I6 applications
• Sensor locations by application: B1S1, 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
• Flange-mount body
• Overall length of 555 mm (21.9 in.)
• Male square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue