Feature 1Fitment: Voltage regulator rectifier is replacement for Polaris Ranger 900 XP RZR, and the part number is 4013978 and 4015816. 2High Quality Material: Voltage rectifier is made of high quality steel material, high strength, rustproof, not easy to deform, sturdy and durable. 3Excellent Performance: Professional manufacturing, exquisite workmanship, good heat dissipation, high efficiency, has a long service time. 4Strict Standards: Built to greatly quality control standards, electrical rectifier has stable performance and high reliability. 5Easy Installation: Easy to install without any modification, direct replacement for the old or damaged one, convenient for using.Item Type: VoltageRegulatorMaterial: SteelReplace Part Number:4013978, 4015816Fitment:Replacement for Polaris Ranger 900 XP RZR .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x VoltageRegulator1 xClipNotePlease double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!