The air/fuel ratio sensor installs in the upstream position on 2007-2009 Suzuki SX4 and 2009-2017 Suzuki Grand Vitara. It reports the exhaust air-fuel ratio so the engine computer can meter fuel precisely. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-64041 Air/Fuel Ratio Sensor Features:

• Fits 2007-2009 Suzuki SX4; 2009-2017 Suzuki Grand Vitara
• Engine coverage includes 2.0L I4, 2.4L I4 applications
• Sensor location by application: B1S1 (bank and sensor number)
• 4-wire wide-band air/fuel ratio sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 400 mm (15.7 in.) overall length
• Female square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue