GREPSPUD Trailer Hub Dust Caps 1.98" (8pc) Zinc-Plated Carbon Steel for 2000–3500 lb Hubs with Removable Rubber Plugs

GREPSPUD 8pcs 1.98" trailer hub dust caps are a zinc-plated carbon-steel kit with removable rubber plugs and eight extra seals designed to protect and preserve grease in 2000–3500 lb boat, RV, and utility trailer hubs.

These replacement grease caps help keep dirt and water out of wheel bearings while providing corrosion-resistant coverage for standard 1.98" (50.4 mm) trailer hubs. The set includes eight metal caps and eight spare rubber plugs, suited for both EZ Lube and standard axle types on most 4- and 5-lug hubs rated around 2000–3500 lb. Built for durability and routine maintenance, they come zinc-plated to resist rust and are sized slightly larger for a secure press fit.

How do these caps protect trailer wheel bearings?

The caps form a sealed barrier over the hub opening to retain grease and block contaminants that can accelerate bearing wear. Their removable rubber plugs allow easy access for greasing without removing the whole cap.

• Prevents dirt, water, and road debris from entering the hub.
• Preserves bearing grease to extend service intervals.
• Removable rubber plugs allow quick grease fittings access.
• Zinc-plated finish reduces surface corrosion over time.

What sizes and axle types are these caps compatible with?

These grease caps are designed with an outer diameter of 1.98 inches (50.4 mm), matching the common size used on many light trailer hubs. They fit both standard and EZ Lube axles and are suitable for most 4-lug and 5-lug hubs within the 2000–3500 lb range.

• Outer diameter: 1.98" (50.4 mm).
• Compatible with standard and EZ Lube axle types.
• Fits most 4-lug and 5-lug trailer hubs rated 2000–3500 lb.
• Check existing hub measurements before ordering to ensure a proper fit.

What materials and features improve durability and maintenance?

Constructed from carbon steel with a zinc-plated coating, these caps resist deformation and corrosion under normal trailer conditions. Each cap includes a rubber plug; the kit supplies eight extra plugs so you have spares for replacements or emergencies.

• Carbon-steel construction for impact resistance.
• Zinc plating for corrosion and rust protection.
• Removable rubber plugs for straightforward greasing access.
• Includes eight extra rubber seals for backups or sharing.

How should I install and maintain these hub caps?

The caps are intentionally sized slightly oversized to ensure a snug press fit. Use a wood block and hammer or a rubber mallet to seat the cap, taking care not to dent it; periodic inspection and re-greasing via the rubber plug keeps bearings healthy.

• Seat caps with a wood block and hammer or rubber mallet—do not strike directly.
• Use the removable rubber plug to add grease without removing the cap.
• Inspect for rust or deformation during routine trailer maintenance.
• Keep extra seals included in the kit for emergency replacements.

Who is this for? This GREPSPUD kit is made for boaters, RV owners, small-haul utility trailer users, and DIY mechanics who want a reliable, cost-effective way to protect wheel bearings on trailers rated roughly 2000–3500 lb. If you need an easy-to-install, corrosion-resistant set with spare seals and compatibility with common axle types, this set covers routine maintenance and emergency replacement needs.