Front Differential Bearing Seal Kit for Honda TRX 420 2014 to 2018 and TRX 500FM 2012 to 2013

Restore the front differential’s integrity with this Bearing Seal Kit for TRX420 (2014-2018) and TRX500FM (2012-2013) quads. This kit replaces worn seals and damaged bearings to stop oil leaks, protect against dirt intrusion, and keep the differential running smoothly under trail and farm conditions. Designed for rugged off-road duty, it delivers a reliable, cost‑effective solution to keep you moving without surprise downtime.

With a complete set of seals and bearings engineered for heavy‑duty use, this aftermarket kit tackles common wear such as dried lip seals and worn bearing races that degrade performance. It provides a straightforward, one‑box service that makes field maintenance quick and dependable, so you can trust your front diff to handle tough terrain. The kit is configured to address the most frequently replaced components during front differential service on these models, delivering long‑lasting sealing and quiet operation.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

The kit includes the essential components needed to service the front differential on the listed TRX models. In the box you’ll find:

• Front differential seals
• Ball bearings
• Needle bearings
• Snap rings
• O‑ring
• Guidance diagrams or installation notes (if included with the specific batch)

Note: Related parts like the differential cover gasket or the drive fluid are not included.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility — specifically designed to match the front differential footprint on the listed TRX420 and TRX500 models for quick, hassle-free installation.
• OEM Cross-Reference — builds on widely used aftermarket cross‑references, offering reliable replacement pathways without guesswork.
• Premium Materials — engineered with durable seals and precision bearings to withstand off‑road dust, water, and temperature swings.
• Performance Restoration — restores sealing integrity and bearing support, reducing leaks, contamination, and drivetrain wear.
• All‑in‑One Convenience — eliminates the need to source individual seals and bearings separately, saving time and labor.
• Cost-Effective Maintenance — a practical alternative to OEM parts that delivers solid performance at a lower cost.

Installation Notes:

• Drain and clean — drain differential fluid and thoroughly clean mating surfaces before reassembly.
• Inspect wear — inspect the differential housing, bearing races, and seal seats for wear or damage and replace as needed.
• Orientation and seating — install seals and bearings in the correct orientation; verify seating against the housing with even pressure.
• Lubrication during install — apply a light coat of fresh differential oil to seals and bearings to aid installation and seating.
• Sealing procedure — ensure proper alignment of all seals; use recommended non-hardening gasket material if the design calls for a gasket in addition to seals.
• Reassembly and fill — reassemble per service manual torque specs for the diff cover and refill with the manufacturer’s recommended differential oil; check for leaks after startup.

Why Upgrade?

Running a worn front differential bearing seal kit increases the risk of oil leaks, dirt ingress, and compromised lubrication, which can lead to accelerated gear wear and potential differential failure. Upgrading with this kit restores sealing integrity and bearing support, delivering improved reliability for trail riding and farm work where uptime matters most.