Keep bearing grease in and road contamination out. These Lippert zinc-plated steel dust caps press firmly into standard 1.988" hub bores, protecting your trailer wheel bearings between service intervals. Sold as a two-pack -- enough to service one complete axle.
Wheel bearing dust caps are a small part with a big job. A missing or damaged cap exposes your hub grease to water, road grit, and brake dust -- accelerating bearing wear and putting your rig at risk of hub failure on the road. Lippert's 2023134658 caps are stamped from steel and zinc-plated for corrosion resistance, engineered to press securely into hubs with a 1.988" bore without wobble or leaking.
The non-lubed designation means these caps are intended for standard grease-packed bearings -- not oil-bath or "Bearing Buddy" style lube systems. If your axle uses grease and your current caps are pitted, rusted, dented, or popping loose, this two-pack covers one full axle (both hubs on a single axle end).
Stamped steel construction with zinc plating resists road moisture and corrosion over the long haul.
Precision OD fits standard trailer hub bores. Press-in installation requires no tools beyond a rubber mallet.
Designed for conventional grease-packed bearings -- not oil-bath or Bearing Buddy lube hub systems.
Two caps per pack -- covers both hubs on a single trailer axle in one purchase.
These caps are engineered to the 1.988" industry-standard bore used on many Lippert-equipped RV trailers, fifth wheels, and utility trailers. A proper press fit holds the cap snug under highway vibration and through repeated temperature cycles. If your current caps are loose or rattle, replace them before your next trip -- a dislodged cap can rapidly destroy a bearing.
The 1.988" OD fits the most common trailer hub bore size, but trailer hubs also come in 1.781" and 2.328" (EZ-Lube) bore sizes. Measure your existing cap's outer diameter or check your axle manufacturer's spec before ordering. These caps do NOT fit EZ-Lube, oil-bath, or Bearing Buddy-style hubs.
Inspect dust caps every time you repack or inspect wheel bearings -- typically every 10,000 to 12,000 miles or annually for full-time RVers. Replace immediately if caps show dents, pitting, or any sign of looseness. A cap that lets moisture reach the grease will shorten bearing life significantly.