The best boat trailer bearing caps protect your bearings from water, dust, and debris while preserving grease. This guide highlights five top options that fit 1.98-inch and 1.98–2.0 inch hubs, making it easier to choose the right caps for Dexter EZ Lube and other common trailer axles. The picks are suited for boat trailers, utility trailers, and campers, with considerations for durability, fit, and ease of maintenance. See the quick reference table below for a snapshot of each option.
| Product | Brand | Fit | Notes |
|---|---|---|---|
| SUNCARACCL 4 Pack | SUNCARACCL | 1.48″ diameter dust caps | Great value pack, compatible with EZ Lube and standard axles |
| iBroPrat 2pcs Carrier | iBroPrat | OD 1.98″ / 50.4 mm | Heavy-duty with extra seals |
| Wrapco 2-Inch Rubber Cap | Wrapco | 2.0″ hubs | Two-pack, durable rubber |
| GREPSPUD 4pcs 1.98” Caps | GREPSPUD | 1.98″ diameter | Includes four extra seals |
| SATUY 4 Pcs 1.98” Caps | SATUY | 1.98″ inner diameter | All-purpose hub dust covers |
SUNCARACCL 4 Pack Trailer Hub Cap Rubber Plugs
Best for budget-conscious buyers seeking multiple caps for EZ Lube and standard axles. These rubber plugs are designed to resist water, dust, oil, and chemicals, helping preserve grease inside the hub. The 1.48″ diameter suits specific dust cap openings. Choose this if you want a cost-effective set with broad compatibility, and you regularly replace missing or worn caps. Caution: verify exact hub diameter before purchase to ensure a snug fit.
iBroPrat 2pcs Trailer Axle Dust Cap Cup Grease Cover
Best for heavy-duty applications needing extra seals. The set includes two caps and two extra seals, offering resilience against rust and deformation thanks to carbon steel and rubber construction with zinc plating. Choose this if you want added resilience and a ready reserve in case of seal wear. Limitation: confirm the 1.98″ size matches your hub before ordering.
Wrapco 2-Inch Rubber Wheel Hub Dust Cap Plug Grease Cover
Better for precise 2-inch hub fit and quick protection. The rubber construction provides durability for trailer hubs, and the design helps keep lubricants contained while reducing contamination. Best for those who need a straightforward two-pack that fits snugly. Caution: ensure exact 2-inch hub compatibility, not just outer diameter.
GREPSPUD 4pcs 1.98” Trailer Hub Dust Caps
Best for value and versatility with extra seals. This set includes four dust caps and four additional rubber plugs, designed to withstand rust and corrosion with carbon steel and rubber construction. Choose this if you want a comprehensive replacement kit for 1.98″ hubs and related axle components. Limitation: ensure your hub diameter aligns with 1.98″ to avoid fit issues.
SATUY 4 Pcs 1.98-Inch Bearing Bars Cover
Best for universal 1.98-inch applications. SATUY caps are designed to prevent water and dust intrusion while maintaining grease within the hub. The 1.98″ inner diameter and 1.57″ height offer a compact, protective solution suitable for many trailers. Choose this if you want a versatile option with a reliable rubber composition. Caution: verify internal height and diameter to ensure full coverage on your hub.
Buying Guide
What size do I need? Measure your hub opening to confirm diameter (commonly 1.98″ or 2.0″). Always match the inner diameter to avoid loose or overly tight fits. Are these caps compatible with EZ Lube? Look for caps labeled as EZ Lube compatible or standard caps designed for Dexter and similar axles. What material matters? Rubber caps offer flexibility and water resistance; steel or zinc-plated caps are more corrosion-resistant but may be heavier. How many should I buy? If you frequently replace caps, multi-pack sets with extra seals or plugs provide better value. Do these affect lubrication? Some designs are grease-containing or pressure-relief oriented; ensure you won’t overfill or contaminate as intended by your hub’s design.
FAQ
- What is the standard hub size these caps fit? Most commonly 1.98″ diameter or 2.0″ hubs; verify your hub measurement before purchasing.
- Can I use these on non-Dexter axles? Many are universal for common 2000–3500 lb axles, but verify specific compatibility on product pages.
- Do I need extra seals or plugs? Sets that include extra seals or rubber plugs help with replacements and emergencies.
- Are these caps waterproof? Rubber caps resist water and dust; rust-resistant coated steel variants offer additional protection in harsh environments.
- Do these protect against grease leakage? Some products include features to prevent grease from escaping the hub or leaking onto wheels.
- How should I install them? Clean the hub opening, align the cap, and press or tap into place; colder temperatures can aid a tight fit.