Premium Quality Replacement PartWe strongly suggest comparing the posted picture to your faulty unit!FRONT DIFFERENTIAL GEAR RING and PINION For POLARIS Models:RZR XP 1000 2017RZR XP 4 1000 2017Part Number :3235845Dimensions:Ring Gear Height: 61mm | 2.4″Ring Gear Outer Diamete: 164.5mm | 6.47″Ring Gear Approx Inner Diameter: 76mm | 3.0″Pinion Gear Height: 105.7mm | 4.16″Pinion Gear Big Gear Diamete: 62.5mm | 2.46″Pinion Gear Spline Diamete: 24mm | .94″Order Includes:1x Ring Gear1x Pinion Gear**