GREPSPUD Trailer Hub Dust Caps 2.44" (4pcs) for 5200–6000 lb Hubs — Zinc-Plated Carbon Steel, Extra Rubber Seals

GREPSPUD 4pcs 2.44" trailer hub dust caps are a zinc-plated carbon-steel set with four extra rubber seals designed to keep grease in and dirt out on 5200–6000 lb boat and RV trailer hubs.

These hub caps replace worn or missing grease caps on common trailer axles (including EZ Lube and standard types) and are sized for 6 on 5.5" bolt-pattern wheels. Built to resist corrosion and mounted with removable rubber plugs, the set includes spare seals so you can maintain watertight protection without hunting for parts. The caps are intentionally slightly oversized for a press fit—installation requires a soft mallet and wood block to avoid denting.

How do these dust caps protect a trailer hub?

The caps act as a barrier that keeps contaminants like water, sand and road grit away from wheel bearings and the grease that lubricates them. By preserving grease and preventing direct exposure, they reduce the likelihood of premature wear and help keep routine maintenance simpler.

• Zinc-plated carbon steel resists rust and corrosion on road-exposed hubs.
• Removable rubber plugs allow inspection and grease access without removing the whole cap.
• Extra rubber seals included for quick on-trail replacements or spares.
• Designed to fit common 5200–6000 lb trailer wheel hubs and 6 on 5.5" bolt patterns.

Which axles and wheel hubs are these caps compatible with?

These 2.44" (OD 2.46" / 62.5 mm) caps fit most standard trailer hubs rated for 5200–6000 pounds and accommodate both EZ Lube and standard axles. They are intended for hubs with a 6 on 5.5" bolt pattern—double-check measurements to ensure a proper match.

• Outer diameter: approximately 2.46 inches (62.5 mm).
• Fits 5200–6000 lb rated hubs commonly used on boat and utility trailers.
• Compatible with EZ Lube and conventional sealed axles equipped for grease caps.
• Works with wheel bolt pattern 6 on 5.5"—confirm hub specs before purchase.

What materials and maintenance features do the caps offer?

Constructed from carbon steel with a zinc-plated finish, these caps are built to withstand road salt and moisture while remaining structurally rigid. Each cap includes a removable rubber plug and the kit supplies four extra rubber seals so you can refresh the plug gasket when needed.

• Carbon steel core for strength and impact resistance.
• Zinc plating provides a protective anti-rust layer.
• Removable rubber plugs enable greasing without full removal.
• Four spare rubber plugs included for immediate replacement needs.

How should I install these trailer dust caps safely?

The caps are designed slightly oversized to ensure a secure press fit—installation requires care to avoid deforming the cap. Use a wood block or a rubber mallet to seat the cap evenly into the hub; do not strike the cap directly with a metal hammer.

• Position cap squarely over hub opening before tapping into place.
• Use a wooden block or rubber mallet to apply even pressure.
• Check that rubber plug is seated and seal is intact after installation.
• If unsure, seek a mechanic’s help to avoid denting or misalignment.

Who is this for: GREPSPUD 2.44" trailer hub dust caps are intended for boat, RV and utility trailer owners who need reliable, affordable replacements that protect wheel bearings on 5200–6000 lb axles. They suit DIYers and fleet operators who want durable, corrosion-resistant caps with spare seals included for on-road emergencies. If you need exact fitment, measure your hub diameter and bolt pattern before ordering to ensure compatibility.