[Advanced Bearing Protection with Positive Pressure Design] Built with a unique internal spring and piston system that maintains constant positive pressure inside the hub, pushing lubricant directly to the bearings while preventing water, dirt, dust and road debris from entering. This greatly reduces rust, corrosion and wear, effectively extending trailer wheel bearing life in marine and harsh road conditions
[Hassle-Free Lubrication & Time-Saving Maintenance] Allows fast, clean bearing lubrication using any standard grease gun—no wheel or hub removal required. This eliminates messy disassembly, reduces downtime, and makes routine trailer maintenance simpler and more efficient for boat trailers, RV trailers, and utility trailers
[Ultra-Secure Fit & Road-Ready Durability] When properly fitted to the correct 1.980" hub bore, this trailer bearing protector provides a tight, stable fit that stays firmly locked in place even on rough roads and long hauls. Rugged, impact-resistant construction ensures reliable performance and prevents loosening or falling out during travel
[Complete 2-Pack Replacement Kit] Includes 2 precision trailer hub protectors with rubber dust caps, ideal as trailer bearing replacement parts. If only part of your old set is damaged, one order will meet your replacement needs. For first-time buyers or full trailer maintenance, we recommend purchasing two orders to fully equip your entire trailer
[Important Fitment Notice – 1.980 Inch Hub Bore ONLY] This bearing protector for trailer is designed exclusively for 1.980" inner diameter trailer hubs. Fits 2000-3500 lb axles for boat, RV, and utility trailers. To avoid fitting issues, please measure your hub bore accurately with a caliper before purchase – do not estimate