This Front Diff Complete for the Polaris Ranger 900 Diesel delivers a rugged, drop‑in gearcase replacement that restores confident four‑wheel drive and precise power transfer on tough trails and demanding farm work. Designed to fit the Ranger 900 Diesel platform from 2011 through 2014, and compatible with related Ranger XP and Crew variants, this assembly helps eliminate common failure points in worn front gearcases. Replacing a failing front differential with a dedicated gearcase ensures smooth engagement, reduces clunk, and preserves steering response when you need it most.

Built to endure off‑road abuse, this replacement front differential gearcase is engineered to withstand harsh dirt, moisture, and shock loads typical of trail riding and field work. The aftermarket gearcase offers reliable performance with a focus on durability and consistent engagement, making it a dependable choice for those who depend on their Ranger for daily work or endurance trail sessions.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

In the box you’ll receive:

• Front Gearcase Assembly

*Related seals, gaskets, and mounting hardware may be sold separately or required for a complete install.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Precisely designed to bolt in where the factory gearcase lived, minimizing modification and install time.
• OEM Cross-Reference: Supports OEM part number lineage, ensuring trusted interchangeability across Polaris 1337xxx series replacements.
• Premium Materials: Alloy steel construction for enhanced strength and longer service life under heavy load and rough terrain.
• Restored Performance: Reclaims clean engagement and consistent four‑wheel drive on mud, sand, and rocky trails.
• Durability for Trail and Farm: Built to stand up to the demands of both weekend trail rides and daily farm tasks.
• Backed by Clear Fitment: Designed for the Ranger 900 family and related XP/Crew variants, reducing guesswork during ordering.

Installation Notes:

• Disconnect the battery and ensure the machine is securely supported before starting work.
• Carefully remove the old gearcase, noting the alignment of input/output shafts and any drive linkages.
• Use new seals and gaskets where applicable; verify mating surfaces are clean and free of debris before installation.
• Torque mounting bolts to OEM service specifications or the Polaris service manual guidance to avoid over‑ or under‑torquing.
• Inspect CV joints and drive shafts for wear and replace if necessary to prevent premature failure of the new gearcase.
• Fill and top‑off differential oil to the recommended grade after installation and perform a basic functional test before returning to full duty.

Why Upgrade?

Running a worn or damaged front gearcase can lead to uneven power delivery, grinding noises, or sudden loss of four‑wheel drive in demanding terrain. This replacement restores reliable engagement and drivetrain integrity, helping you stay productive and confident on trail, mud, or job-site tasks.