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Description
The Lippert 85373828 Premium Threaded Dust Cap is a heavy-duty oil bath hub cap designed for 10,000–16,000 lb trailer axles with a 4" thread diameter. Constructed from die-cast aluminum alloy with a clear anodized finish, this premium cap provides durable protection against dust, moisture, and road debris while allowing convenient visual inspection and servicing of the hub lubricant.
Detailed Information:
Product Type
Threaded Oil Bath Dust Cap
Brand
Lippert
Part Number
85373828
Axle Compatibility
10,000–16,000 lbs
Thread Diameter
4"
Lubrication Type
Oil Bath
Body Material
Die-Cast Aluminum Alloy
Finish
Clear Anodized
Lens
Clear Oil-Level Inspection Lens
Seal
Watertight O-Ring & Rubber Plug
Fitting:
Designed for compatible 10,000–16,000 lb trailer axle hubs with a 4" threaded hub cap opening and oil bath lubrication system. Machined threads provide an OEM-style fit for compatible Lippert wheel-end assemblies. Verify thread diameter and hub configuration before installation.
Features:
Heavy-Duty Axle Compatibility: Designed for compatible 10K–16K trailer axle applications.
4" Machined Threads: Provides a precise OEM-style fit and easy threaded installation.
Die-Cast Aluminum Construction: Provides excellent durability and resistance to demanding road conditions.
Clear Anodized Finish: Helps protect the aluminum body against corrosion and environmental exposure.
Clear Inspection Lens: Allows quick visual inspection of the hub oil level without removing the cap.
Side Fill & Drain Port: Allows lubricant to be added or drained without removing the entire hub cap.
Magnetic Vent Plug: Attracts metal particles in the lubricant, helping identify potential wheel-end wear before it becomes critical.
Watertight Seal: Includes an O-ring and rubber plug to help prevent moisture and contaminants from entering the hub.
Oil Bath Application: Specifically designed for wheel ends utilizing oil lubrication.
Product Overview:
The Lippert 85373828 Premium 4" Threaded Oil Bath Dust Cap provides a durable and service-friendly solution for heavy-duty 10,000–16,000 lb trailer axle wheel ends. Its aluminum construction, clear inspection lens, magnetic vent plug, convenient side service port, and watertight sealing system help protect bearings and lubricant while simplifying routine wheel-end inspection and maintenance.
85373828 - Premium 4" Threaded Aluminum Oil Bath Dust Cap with Clear Lens – 10K–16K Axles | LPT
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85373828 - Premium 4" Threaded Aluminum Oil Bath Dust Cap with Clear Lens – 10K–16K Axles | LPT
I was worried about the fit but these caps slid right on and the set screw cinched down tight. The clear plastic is a good thickness.
A
Alexander Kozlov
Highly Recommend for Visibility
I've been using these for a few months now and love being able to see my oil level instantly. It's a small change but makes a big difference in maintenance. The quality is top-notch.
D
Dall MacBey
Perfect Fit for My 12K Axles
These caps were exactly what I needed for a 12K trailer rebuild. The set-screw design is so much better than the old threaded ones I was replacing. They went on easily and the seal is tight.
C
Christopher Adams
Tight Seal and Easy Install
These caps are great. The included O-ring is a nice touch and ensures a perfect, leak-free seal. The transparent body is super useful.
T
Tomkin Dodimead
Great for Quick Oil Checks
The clear design is a huge convenience. I can check the oil level on my trailer's hubs in seconds now without any mess. The set screw is solid and holds it securely in place.
