021-035-00 - Oil Cap

The 021-035-00 Oil Cap is designed to seal and protect oil-lubricated trailer hubs, helping retain hub oil while preventing dirt, moisture, and debris from entering the hub assembly. Properly installed, this cap supports smooth bearing operation and long service life in oil-bath hub applications.

Commonly used on Larson Cable Trailers, this oil cap is ideal for routine maintenance or replacement on oil-lubricated trailer axles.

Specifications

• Part Number: 021-035-00
• Component Type: Oil hub cap
• Style: Press-in / threaded (verify application)
• Material: Metal
• Finish: Corrosion-resistant coating
• Application: Oil-lubricated trailer hub systems

Fitment

• Designed for use on oil-lubricated trailer hubs
• Commonly used on heavy-duty trailer axles
• Verify hub type (oil bath vs grease) before installation

Notes

• Maintains proper oil level inside hub
• Replace if damaged, leaking, or loose
• OEM-style replacement component
• Always refill hub with manufacturer-recommended oil after installation