• Interchange OE Number: Compatible with 4013979, 4016021. Package Included: 1 X Oxygen Sensor.
• Benefits of Replacing Old Oxygen sensors: Oxygen sensor can improve engine performance. Prevent rough idle and engine misfires. Saves fuel and reduces air pollutant emissions. Extend expensive catalytic converter life.
• Fitment: IMILWON O2 Sensor Compatible with 2016-2020 Polaris RZR S 1000,  2015-2020 Polaris RZR XP, 2016-2019 Polaris RZR XP Turbo, for more applicable vehicle models, please refer to fitment chart.
• Recommendation and Services: The installation of engine and electrical  parts is a very tedious  work. We recommend that if you are unsure, seek guidance of professionals. 
• Tips: Please check the description and interchangeable part numbers to confirm the compatibility before purchasing. Please check your oxygen sensor position plug wire length.
• Length: Total length from tip to tip is 14.5 inches. Wire length is 10.5 inches. 

             This is for a NEW part in a torn box.