Lippert 2023134660 / PP-DC-3 Standard Press-In Dust Cap -- 2.72 in. Non-Lubed, 2-Pack
Factory-style replacement dust caps engineered for 7,000 and 8,000 lb grease-lubricated trailer hubs. Press-in fit, zinc-plated steel body, sold two per pack -- enough to service both hubs on a single axle in one order.
Trailer hub dust caps do one critical job: they seal the outboard end of the hub to block road grit, water, and debris from reaching the wheel bearings while retaining the grease pack inside. When a dust cap is dented, corroded, or missing, bearing failure is not far behind. Lippert's 2023134660 dust cap is a direct press-in replacement that restores that protection without requiring thread chasing or special tools.
Sized at exactly 2.72 inches in outer diameter, these caps are designed to fit the hub bore used on Lippert-built axles rated at 7,000 to 8,000 lb. The non-lubed designation means these caps are intended for standard grease-lubricated bearing setups -- not oil-bath hubs. If your trailer uses oil-bath or Dexter E-Z Lube style hubs, verify fitment before ordering.
Drives flush into the hub bore with a rubber mallet or hub cap driver -- no threads, no tools beyond a mallet and block of wood.
Corrosion-resistant finish stands up to road spray, salt, and weather across the full hauling season.
Matched to standard grease-packed bearings on 7,000 to 8,000 lb axle hubs -- not oil-bath systems.
Two caps per order covers both hubs on a single axle -- handy for annual maintenance or roadside replacement.
These caps are engineered for Lippert axle hubs with a 2.72 in. bore opening, typically found on 7,000 and 8,000 lb capacity axle assemblies. They are a common service part on fifth-wheel trailers, travel trailers, and toy haulers built on Lippert frames and running gear. If you are unsure of your axle rating, check the axle tube stamp or your trailer's axle tag -- Lippert axles are commonly marked with weight rating and build date.
Part number 2023134660 (PP-DC-3) is a non-lubed dust cap for standard grease-packed bearing assemblies. It does not include a grease fitting and is not compatible with oil-bath hub systems. Verify your hub type before installing.
Press-in dust caps require no special skills but do benefit from care on installation:
Dust caps should be inspected at every bearing repack interval -- typically every 12,000 miles or annually for trailers in regular service. A dented or loose cap allows moisture ingress and accelerates bearing wear. Replacing caps during a bearing repack is cheap insurance against a roadside breakdown.
Measure your hub bore opening before ordering if you are unsure of your axle configuration. The 2.72 in. diameter is specific to certain Lippert 7,000 to 8,000 lb hub assemblies. Lippert also produces hubs requiring different cap sizes -- using the wrong diameter cap will result in a loose fit or one that cannot seat properly.