Hyper Differential Seal Kit Honda Rear 2007 to 2013 Fits TRX 420FE FM 2007 2013 TRX 420TE TM 2007 2013

This Rear Differential Seal Kit for Honda TRX 420 Rancher models from 2007 through 2013 restores the integrity of the rear driveline, stopping oil leaks and preserving essential lubrication under tough trail, farm, or worksite use. It covers the Honda TRX 420 FE/FM and TRX 420 TE/TM variants produced from 2007 to 2013, delivering a precise, install-now solution that keeps your ATV performing when the terrain gets muddy or demanding. Designed to replicate OEM fit and function, it’s a reliable aftermarket choice when originals are worn or unavailable.

Built to withstand dust, mud, and hours of hard use, this kit provides a complete seal package with durable elastomer seals and compatible mating surfaces. The aftermarket replacement is engineered to match OEM geometry, offering seal longevity and dependable performance for the trail rider or farm operator who needs to get back to work quickly without waiting for factory parts.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

This kit includes the essential seals required to restore rear differential sealing on Honda TRX 420 Rancher models.

• Rear differential seals
• Pinion shaft seals
• Axle shaft seals
• Brake panel seals
• Brake cover seals
• O-rings and miscellaneous gaskets

Note: Related parts such as differential oil, lubrication, mounting hardware, or specialty tools are not included.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Precisely engineered to match the Honda TRX 420 rear differential layout for straightforward installation.
• OEM Cross-Reference: Cross-references to common Honda OEM part numbers, making substitutions seamless.
• Premium Materials: Durable elastomer seals designed to resist oil shrinkage, heat, and harsh environmental exposure.
• Comprehensive Coverage: Includes essential seals for both the pinion and axle areas to prevent leaks from multiple leakage points.
• Performance Restoration: Restores original sealing performance, protecting gears and bearings from contamination and lubrication loss.
• Budget-Friendly Reliability: A cost-effective solution that extends service life without OEM-only pricing.

Installation Notes:

• Drain and clean: Drain differential fluid and clean all mating surfaces before seal removal and installation.
• Inspect surfaces: Check the differential housing shoulders for corrosion or grooves; repair or replace as needed.
• Lubricate lightly: Apply a thin film of clean gear oil to seals before installation to reduce bias and ensure seating.
• Even seating: Use appropriate seal drivers or tools to press seals evenly; avoid cocking or edge damage.
• Replace related seals: If inspecting one seal, consider replacing adjacent seals to prevent future leaks.
• Final checks: Refill with the correct differential oil, run through gears, and perform a road/test leak check after a short ride.

Why Upgrade?

Running a worn-out rear differential seal invites ongoing oil leaks, dirt ingress, and inadequate lubrication of the gears and bearings. This replacement restores sealing integrity, protects the driveline, and restores reliability for challenging trails or demanding farm work. With a proper seal kit, you’ll minimize downtime and maintain consistent performance when it matters most.