Walker 250-54102 Walker OE Oxygen Sensor Fits select: 2013-2017 NISSAN ALTIMA, 2013-2017 NISSAN SENTRA

The oxygen sensor measures combustion efficiency based off the amount of oxygen in the exhaust gas. Genuine Walker Products Meets OEM specifications Measures 5.8" x 1.8" x 2.1" 0.3 lbs.