Lippert 2023134662 -- Standard Press-In Dust Cap with Rubber Plug, 2.45" Diameter, Super Lube, 2-Pack
OEM-spec replacement dust caps for Lippert Super Lube trailer axle hubs rated 5,200 to 6,000 lbs. Press-in steel construction with a rubber plug for grease inspection and servicing -- sold two per pack to cover one complete axle.
The Lippert 2023134662 dust cap is the correct OEM-replacement cover for Super Lube trailer axle hubs with a 2.45-inch bore. Designed to press snugly into the hub bore, this cap creates a reliable seal that prevents road grime, water, and debris from reaching your wheel bearing grease. Without a properly fitting dust cap, moisture intrusion accelerates bearing wear and can lead to premature hub failure on the road.
Each cap includes a rubber plug in the center port. On Super Lube axle systems, that port is used to inject fresh grease through the hub without full disassembly -- the plug keeps the port sealed between service intervals. This two-pack covers a single trailer axle (one cap per hub side), making it the logical replacement purchase for routine maintenance or after a hub inspection.
Sized to 2.45" bore for a firm, rattle-free press fit into compatible Super Lube hubs -- no threads or fasteners needed.
Center rubber plug seals the grease injection port between Super Lube service intervals. Remove to add grease without pulling the hub.
Engineered specifically for Lippert Super Lube axle hubs in the 5,200 to 6,000 lb axle capacity range.
One pack replaces both dust caps on a single axle. Stock an extra pack for the next service or a roadside kit.
This cap is designed for Lippert (formerly Dexter) Super Lube axle hubs with a 2.45" hub bore. Super Lube hubs feature a center port that allows grease injection into the bearing cavity while rolling -- the rubber plug in this kit seals that port when not in use. Verify your hub bore diameter before ordering if you are unsure of your axle model.
Lippert part number 2023134662 corresponds to vendor/alternate reference PP-DC-5 and may also appear in some catalogs as Lippert part 08-7936. All three numbers identify the same 2.45" standard press-in dust cap for Super Lube hubs. UPC: 848150068057.
Lippert offers dust caps in multiple bore diameters (1.986", 2.328", 2.45", and others) to match different axle capacities. The 2.45" cap in this listing is specifically for 5,200 to 6,000 lb Super Lube hubs. Using a dust cap with the wrong bore diameter will result in a loose or non-fitting cap that cannot retain grease or protect the bearing.
Lippert's Super Lube (also branded as EZ-Lube on some older Dexter-heritage axles) is a lubrication system built into the axle spindle. A grease fitting on the spindle end allows you to pump fresh grease directly into the bearing cavity from outside the hub using a standard grease gun. The rubber plug in the dust cap covers the inner access port of that system, preventing contamination while allowing quick grease service without removing the wheel or hub.
Keeping the rubber plug in good condition is essential -- a cracked or missing plug exposes the grease port to road spray and debris. Replace both the dust cap and the rubber plug together whenever you service the hubs.
Inspect dust caps and rubber plugs at every wheel bearing service -- typically every 12,000 miles or annually for most travel trailer applications. A cap that has become loose, pitted, or that allows any movement in the bore should be replaced immediately. Carry a spare set of caps in your roadside kit any time you are towing long distances.