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HAULK DEPOT®

Aluminum Oil/Grease Cap – For 6K–8K Hubs | HD
SKU: 8AL-GO-CP-HD
$27.00 USD $27.00 USD $45.00 USD
Sale 40.0% $18.00 USD (40.0%)
Shipping calculated at checkout.
In stock
Description

This aluminum grease/oil cap is built for heavy-duty hub systems rated from 6,000 to 8,000 lbs. Featuring a 2.875" machined thread, it's compatible with a wide range of hub configurations, supporting both grease and oil bath applications. The cap includes a visible oil level window and magnetic vent plug to promote clean operation and easy maintenance.

Detailed Information:
Thread Diameter 2.875" (Machined Thread)
Plug Size 1/8"-27 NPTF
Material Aluminum Alloy
Axle Rating 6,000–8,000 lbs
Fitting:

Compatible with Dexter 6K & 8K screw-in hub caps, Dexter 9K axles (pre-10/1989), Lippert 8K, and Kodiak 8K disc brake systems. Replaces a wide range of OEM parts and fits threaded hub designs requiring 2.875" OD caps.

Features:
  • Oil Level Sight Window: Built-in viewing port for monitoring oil without removing the cap.
  • Magnetic Vent Plug: Captures metal debris to protect internal components.
  • Dual Application: Designed for both grease-packed and oil bath hubs.
  • Durable Build: Made from corrosion-resistant aluminum alloy for longevity.
  • Complete Kit: Includes plug, seals, gasket, hardware, vent plug, and O-ring.
Interchangeable Part Numbers:
  • Dexter 021-029-00
  • Dexter 21-35 / K71-038-00
  • Lippert 695814
  • Kodiak 8001
  • Valcrum ST-2875
Product Overview:

This 2.875" threaded aluminum hub cap is engineered for high-capacity trailers using 6K–8K axles. Its rugged design and smart features like an oil window and magnetic vent make it an ideal replacement for Dexter, Lippert, Kodiak, and Valcrum hub caps. Everything needed for installation is included in one convenient kit.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
Aluminum Oil/Grease Cap – For 6K–8K Hubs | HD

Customer Reviews

Based on 12 reviews
58%
(7)
42%
(5)
0%
(0)
0%
(0)
0%
(0)
R
Rab Ruseworth
Reliable Build

Aluminum cap is sturdy, threads fit perfectly. Magnetic vent seems to trap particles as intended.

R
Rafael Ortega
Excellent for 6K–8K

Direct fit for Dexter and Lippert hubs. Magnetic vent plug really helps keep bearings clean.

S
Somerset Dominy
Simple Hub Upgrade

Does the job, installation straightforward. Threading is smooth, fit is snug, quality seems high.

F
Flory Ede
High-Quality Material

Cap feels robust and corrosion-resistant. Easy to install, and all hardware included.

G
Grange Pepineaux
Durable and Reliable

Installed on my 8K hubs and it feels sturdy. Magnetic vent is a nice feature—keeps metal shavings from spreading.

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