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Trailer Parts Pro 5,200-6,000 lb Zerk Lube Axles with 6 Bolt Hubs Dust/Grease Caps with Rubber Plugs, 2.440" OD, 2-Pack RG04-080


Regular price $10.99 USD

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

  • Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
  • Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
  • For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
  • Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
  • Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
  • After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
  • If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

Product Overview:

This premium replacement grease cap kit provides reliable protection for 5.2K and 6K trailer axles featuring 6-bolt hubs. Stamped from heavy-duty cold-rolled steel, the standard profile cap includes a dedicated cut-out designed specifically for Zerk lube hub systems. The included rubber push-pop in seals ensure a secure fit to block road debris, dust, and moisture from contaminating the wheel bearings.

What's Included by Kit Option: 

2 x Dust / Grease Caps

2 x Rubber Plugs

Specifications:

Brand: Trailer Parts Pro

Part Number: RG04-080

Reference Number: 150920

Alternate Item Numbers: 7700016-10, PP21-1-AL

Outer Diameter (OD): 2.440"

Fitment: 5.2K and 6K axles with 6 bolt hubs

Material: Cold rolled stamped steel

Design: Standard cap with Zerk lube cut-out and rubber push-pop in seal

Installation Type: Drive-in

Package Type: Retail Packaged

Package Quantity: 2

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