ONE 4" Valcrum Aluminum Hub Cap 10K 12K 15K Trailer Axle Grease/Oil 21-36 Dexter
One complete Valcrum aluminum hub cap assembly for compatible heavy-duty trailer axle hubs. Designed for grease and/or oil bath applications with an oil level window, magnetic vent plug, and drain/fill service port.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number | ST-400 |
| Brand | Valcrum |
| Product Type | Aluminum trailer axle hub cap assembly |
| Cap Size | 4" hub cap application |
| Depth | 1-7/8" deep |
| Material | Aluminum alloy body |
| Lubrication Type | Grease and/or oil bath applications |
| Quantity Included | 1 complete hub cap assembly |
Fitment / Application
| Category | Details |
|---|---|
| Trailer System | Heavy-duty trailer axle wheel-end hub cap |
| Common Axle Range | Fits many 10K, 12K, and 15K trailer axle hub applications |
| Replacement Reference | Direct replacement reference for Lippert 693935 |
| Fitment Method | Verify existing hub cap size, thread style, cap depth, and hub application before ordering |
| Important Note | Axle capacity alone does not guarantee fitment. Match the cap to the hub. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Aluminum Alloy Body | Durable service replacement for compatible heavy-duty hub applications |
| Oil Level Window | Allows quick visual oil level inspection on oil bath setups |
| Magnetic Vent Plug | Helps collect metallic particles from the wheel-end lubrication system |
| Drain / Fill Port | Provides easier hub service access during maintenance |
Overview
This listing is for one complete Valcrum ST-400 4" aluminum hub cap assembly. It is designed for compatible heavy-duty trailer axle hubs using grease and/or oil bath lubrication. This cap is commonly used as a replacement reference for Lippert 693935 on matching 10K, 12K, and 15K trailer axle hub applications.
R&P Service Insight
Hub caps are measurement-specific parts. Before ordering, match the replacement cap to the hub style and thread size, not just the axle capacity.
- Measure First: Confirm the existing hub cap is a 4" style and verify the depth requirement.
- Check the Hub: Inspect hub threads and sealing surfaces before installing the new cap.
- Match the System: This cap is intended for grease and/or oil bath hub service.
R&P Knowledge Hub
Compatibility: Commonly used on matching heavy-duty trailer hub applications for 10K, 12K, and 15K axles where the 4" cap style matches.
Vehicle / System Fit: Trailer axle wheel-end hub cap for grease and/or oil bath hub systems.
Installation Notes: Clean the hub face, inspect the threads, replace the gasket components included in the kit, and confirm proper seating before filling or servicing the hub.
Performance Insight: The oil level window helps with visual inspection, while the magnetic vent plug helps collect metallic particles inside the hub lubrication system.
Brand & Fitment Note
Selling Brand: Valcrum
Application Reference: Lippert 693935 is used as a replacement reference for compatible applications only.
What This Means: This listing is for a Valcrum ST-400 aluminum hub cap assembly, not a guaranteed OEM-branded Lippert component unless specifically stated on the product packaging.
Before Ordering: Verify hub cap size, thread style, cap depth, axle capacity, grease/oil bath setup, and included components before installation.
R&P Repair Insight
Replacing a hub cap is usually straightforward, but leaks can still occur if the hub surface, gasket, plug, or threads are damaged. A correct cap still needs a clean sealing surface and proper installation.
- Sealing Surface: Make sure the hub face is clean, flat, and free of old gasket material.
- Thread Condition: Do not force the cap if the hub threads are damaged or cross-threaded.
- Lubrication Service: Refill and service the hub according to the axle or hub manufacturer's lubrication requirements.
Features
Complete Hub Cap Assembly
Includes the cap, gasket components, lens, retainer ring, screws, plugs, and O-ring needed for a complete cap replacement.
Aluminum Alloy Body
Built with an aluminum alloy body for heavy-duty trailer axle wheel-end service.
Grease / Oil Bath Compatible
Designed for compatible hubs using grease and/or oil bath lubrication systems.
Service-Friendly Design
Oil level window, magnetic vent plug, and drain/fill port help simplify inspection and maintenance.
Included Components
| Quantity | Item |
|---|---|
| 1 | Aluminum hub cap |
| 1 | Gasket |
| 1 | Lens |
| 1 | Retainer ring |
| 1 | Foam gasket |
| 6 | Torx screws |
| 1 | Magnetic vent plug |
| 1 | 1/8"-27 plug |
| 1 | O-ring |
