ARC-1-33 OEM Part Numbers : 3235487 Will Fit: äó¢Polaris RZR 1000 : 2014 äó¢Polaris RZR 1000 : 2015 - Manufactured 8/5/2014 and After. Will not fit 2015 models manufactured prior to 8/5/2014. äó¢Polaris RZR 4 1000 : 2014+ Now there is a solution for your front differential roller cage always breaking. You wont have to replace it ever again with those cheap plastic parts from the factory. You can now replace it with a Heavy Duty 6061 Hardened Aluminum piece that will stand up to any torture you can throw at it. This part was made for those who would rather be riding than working on their machines! Whether you are replacing this from experience or preventing future break downs, this is one modification that will be well worth the time and effort. This part is the first part that breaks in a front differential when using a stock plastic part. We offer a LIFETIME WARRANTY on this product.