Premium Quality Replacement PartOxygen Sensor NEW for Polaris RZR RS1 / RZR XP 1000 / RZR XP 4 1000 / 2018-2020Lambda Exhaust02 OxygenSensor for Polaris**Not all Polaris models come with a Lambda Sensor****Please check measurement AND fitment before ordering**Fits the FollowingPOLARIS ModelsSportsman 570 2019-2021Sportsman X2 570 2019-2021Sportsman Touring 570 2020-2021Ranger 1000 2020-2021Ranger 1000 Full Size 2020Ranger Crew 1000 EPS/Premium 2020-2021Ranger Crew XP 1000 2017-2021Ranger XP 1000 2017-2021RZR RS1 2018-2020RZR XP 1000 2018-2021RZR XP 4 1000 2018-2021Sportsman 570 All EU Versions 2019-2021ReplacesPOLARIS Part NumbersLambda Sensor LSF 4.2 | 4011853Dimensions MeasurementsWrench Size | 22mmSensor Depth (from end of threads) | 20mmWire Length |33.5cmOrder Includes1x Lambda Exhaust 02 Sensor