021-039-00 - Grease Cap

The 021-039-00 Grease Cap is a press-in metal cap designed to protect the outer wheel bearing while retaining grease inside the trailer hub. Installed on the end of the hub, this cap helps prevent dirt, moisture, and debris from contaminating the bearing assembly.

Commonly used on Larson Cable Trailers, this grease cap is typically found on standard (non-E-Z Lube®) trailer hubs, including 8,000 lb axle applications.

Specifications

• Part Number: 021-039-00
• Component Type: Grease cap
• Style: Standard press-in (non-E-Z Lube®)
• Outer Diameter (OD): 2.720 in
• Depth: ~1.50 in
• Material: Steel
• Finish: Corrosion-resistant coating
• Application: Trailer hub outer bearing protection

Fitment

• Used on standard trailer hubs (non-E-Z Lube®)
• Commonly paired with 8K hub and bearing assemblies
• Press-fit into hub bore ensure correct size before install

Notes

• Protects outer bearing from contamination
• Replace grease cap if bent, damaged, or loose
• OEM-style replacement component
• Not compatible with E-Z Lube® spindles