Replace Your Polaris RZR O2 Sensor The diagnosis is in: your engine keeps misfiring because your O2 sensor is corroded. Replace your faulty O2 sensor with SuperATV's Up and Running Polaris RZR O2 Sensor. It's an OEM equivalent with a more affordable price tag. Top-notch sensing element Durable construction Easy to install Keeps your RZR Running Smooth Does your RZR seem sluggish? By replacing the O2 sensor, you can prevent bad fuel efficiency, a weak-feeling engine, slow shifting, and rough idling. For true RZR performance, you need an O2 sensor that can do its job so all your other machine parts can do theirs. Durability at Its Finest Your O2 sensor has to be tough enough to handle the conditions inside your exhaust system. That™s why we designed this sensor to withstand high temperatures, nasty gases, and vibrations. Easy to Install This O2 sensor is super easy to install. It screws right into your exhaust pipe. And in true plug-and-play fashion, the connector clicks into your factory wiring. You'll have your sensor installed and be back on the trail in no time.