Part numbers: 4016021, 4013979Product name: oxygen sensorfor Polaris Lambda sensor ATV Sportsman 570-450 EPS QUAD RZR 570 1000 XP XP 4 1000 TurboFitment:For 2015 RZR XP 1000For 2015 RZR XP 1000For 2015 RZR XP 1000 INTLFor 2015 RZR XP 4 1000For 2016 110For 2016 570, 570 XP, FULL SIZE CREWFor 2016 RZR XP 4 1000For 2016 SPORTSMAN 110For 2016 SPORTSMAN 570/450 EPS QUADFor 2017 110For 2017 SPORTSMAN 110For 2015 SPORTSMAN 570 EFI EPS FOREST QUADFor 2015 SPORTSMAN 570 SP EPS, QUADFor 2016 GENERAL 1000 EPSFor 2016 R16RGE99A7//AV POLARIS GENERAL 1000 EPSFor 2016 R16RGE99A7//AV POLARIS GENERAL 1000 EPSFor 2016 R16RGE99A7//AV POLARIS GENERAL 1000 EPSFor 2016 R16RT_87 900 XP ALL OPTIONSFor 2016 900 XP ALL OPTIONSFor 2016 CREW 900 ALL OPTIONSFor 2016 RZR 1000 60 INCH ALL OPTIONSFor 2016 RZR XP 1000For 2016 RZR XP 1000 EU/For 2016 RZR XP 4 1000For 2016 RZR XP 4 TURBOFor 2016 RZR XP TURBOFor 2016 RZR XP TURBO, For 2016 RZR XP TURBO, For 2016 SPORTSMAN 570 EPS UTE QUADFor 2016 SPORTSMAN 570 SP EPS, QUADFor 2016 SPORTSMAN 570/450 EPS QUADFor 2016 SPORTSMAN TOURING QUAD 570 EPSFor 2017 GENERAL 1000 EPSFor 2017 POLARIS GENERAL 1000 4P For 2017 POLARIS GENERAL 1000 4P PSFor 2017 POLARIS GENERAL 1000 EPSColour: blackMaterial: metalPackage Contents:4 x Oxygen SensorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.