New replacement O2 Sensor.
Keep your Polaris ATV running at peak efficiency with this reliable replacement O2 sensor. Whether you're hitting the trails or taking on tougher terrain, trust this part to keep your engine in top shape. This sensor is your first step in maintaining the performance and longevity of your ATV's engine, so don't wait—replace that worn O2 sensor and get back to enjoying the ride!
Direct replacement for POLARIS part number 4011853