Bearing Buddy 42101 1.980" Chrome Trailer Wheel Bearing Protector with Bra - Pair

The Bearing Buddy 42101 is a chrome-plated trailer wheel bearing protector set designed to prevent wheel bearing failure by keeping water, dirt, and contaminants out of trailer hubs. Compatible with a 1.980-inch (50.29 mm) hub bore, this is the model 1980 — the original Bearing Buddy design, proven in decades of real-world trailering service. Sold as a pair, this set includes the Bearing Buddy Bra (model 19B), a vinyl cover that fits over each protector to contain excess grease and keep it off tires and wheels.

Key Features:

• Fits hubs with a 1.980" bore — compatible with outer bearing cones L-44643, L-44649, and L-44640; outer bearing cup (race) L-44610
• Spring-loaded piston maintains a slight internal pressure (~3 PSI) to prevent water intrusion when hubs are submerged during boat launching
• Automatic pressure relief valve prevents over-pressurization and protects inner seals from damage due to overfilling
• Grease can be added easily through the centrally located grease fitting without removing the hub
• Lubricant level check is as simple as pressing on the edge of the moveable piston — if it rocks, the hub is properly filled
• Triple chrome-plated steel barrel for corrosion resistance and a clean appearance
• Stainless steel internal components for long-term durability
• Includes Bearing Buddy Bra (model 19B) vinyl cover to catch and contain any expelled grease
• Replaces the standard dust cap in the wheel hub — no special tools required for installation

The Bearing Buddy 42101 is ideal for boat trailers, snowmobile trailers, ATV trailers, RV trailers, and utility trailers — particularly in applications where hubs may be submerged or exposed to moisture. By keeping hubs full of grease under slight positive pressure, Bearing Buddy eliminates the need for periodic bearing repacking and dramatically extends bearing life.