2021 OEM Polaris RZR Front Gear Case Differential 1337145

Genuine Polaris OEM Front Gearcase Differential for RZR Pro XP

Ensure your Polaris RZR Pro XP maintains peak performance with this genuine OEM factory replacement front gearcase differential. Designed for the ultimate in reliability and longevity, this part is engineered to the exact specifications of your vehicle, offering unparalleled fit and function. Don't compromise on quality; trust Polaris OEM parts for the durability and performance you demand on any terrain.

What’s in the Box

Why Riders Upgrade

RZR Pro XP vs. Stock or Generic Options

Common Questions

What vehicles does this differential fit?
This OEM Polaris differential is specifically designed for 2021-2024 Polaris RZR Pro XP and Pro XP 4 models, including Audio, Ride Command, and Ultimate trims.

Is this part new or rebuilt?
This is a brand new, genuine OEM Polaris part, not a rebuilt unit.

What is the latest part number for this differential?
The latest Polaris part number is 1337228, which replaces older part numbers 1334305, 1334398, and 1334432.

Why choose OEM over aftermarket?
Polaris OEM parts are engineered to the highest standards for reliability, longevity, and perfect fitment, ensuring optimal performance and peace of mind compared to many aftermarket alternatives.

What Riders Are Saying

This OEM differential was exactly what I needed to replace my old one. Fit perfectly and has my RZR running like new again. Plus, the free can cooler was a nice touch! Highly recommend.
— Mike P., Utah

Only the best for my Pro XP. I trust Polaris OEM parts for reliability, and this front gearcase differential is no exception. Installation was straightforward, and the quality is evident.
— Jessica L., Colorado