Refresh trailer hub protection before a dry bearing turns into a roadside repair.
Spring loaded design keeps steady pressure on grease against the wheel bearing area.
Fits 1.98 inch axle hubs on boat trailers, utility trailers, horse trailers, and compatible equipment trailers.
Zerk fitting lets you add grease with a grease gun without removing the cap.
2 pack includes bearing protectors plus dust cap covers for both hubs.
More Details
2 pack of trailer bearing grease caps with dust caps.
Fits 1.98 inch wheel hubs.
Spring loaded internal pressure design.
Standard zerk fitting for grease gun refills without removing the cap.
Chrome coated metal construction.
Designed for boat trailers, utility trailers, horse trailers, and other trailered equipment.
Not designed for passenger vehicle wheel hubs.
If installation is tight, freeze caps for 5 to 10 minutes before pressing them on.
Description
Trailer bearings work hard around ramp water, road spray, and outdoor storage. These 1.98 inch grease caps help keep grease under pressure at the hub and give you a refill point through the zerk fitting.
Each set includes 2 grease caps and dust cap covers. Use them for compatible boat trailers, utility trailers, horse trailers, and other trailered equipment, not passenger vehicle wheel hubs.
Our Shipping Rates and Speeds
All orders under $60 ship for $6.99
Orders over $60 ship for FREE
You can expect to receive your items in 3 to 7 days in almost all scenarios
90% of orders arrive in 4 days or less
Try our boat trailer grease caps risk free for 30 days. If you are not satisfied, get a full refund.
Installation tip
For easier installation, place the caps in the freezer for 5 to 10 minutes before fitting. The cold contracts the metal slightly, allowing them to slide into place smoothly.
Use
Trailer grease caps help provide constant lubrication while keeping out dirt and debris. Fill with any standard Zerk fitting grease gun and cover with the included dust cap covers.
A Dust Cap Just Covers. These Keep Bearings Alive.
Grease Caps
Plain Dust Cap
Spring pushes grease to bearings
Blocks water at the ramp
Keeps bearings from running dry
Zerk fitting to top off grease
Guards against roadside failure
Hot hub hits the water
Stays greased
Sucks in water
Protect Wheel Bearings
Caps block dirt, dust, and road grime from your hubs.
Keep Grease In Place
Tight caps help reduce grease loss during towing.
Easy Grease Access
Rubber plugs let you service fittings without removing caps.
Road Ready Steel
Chrome plated steel gives trailers a durable finished look.
BEARING PROTECTORS
Keep the Bearings Greased and Dry
A plain dust cap just covers the hub. When a hot hub backs into cold water, it sucks water past the seal and washes the grease out, and dry bearings seize on the highway. Inside these caps a spring keeps pushing fresh grease against the bearings, so they stay packed and water is blocked, and the zerk fitting lets you top off with a grease gun without pulling the cap.
Highlights:
Spring-loaded bearing protectors, 2 pack
Fits 1.98 in trailer hubs
Zerk fitting for grease-gun refills
Boat, utility, horse & equipment trailers
Customer Reviews
Frequently Asked Questions
Yes, these 1.98" caps are the most common size and fit the majority of 4 and 5-lug hubs found on 2,000 to 3,500-lb trailer axles.
No, you can easily install them using a rubber mallet and a small block of wood to ensure they are driven in straight and flush.
Yes, each 2-pack comes with two chrome-plated caps and two high-quality rubber plugs for easy grease access.
Chrome plating provides a durable, corrosion-resistant layer that helps protect the steel from the elements, though a fresh-water rinse after saltwater use is always recommended.
Absolutely; these are perfect for any trailer with a 1.98" hub bore, including utility, cargo, and camper trailers.
You should measure the inside diameter of your hub's bore where the cap is installed; 1.98" is the industry standard for most small-to-midsize trailers.
