1 1
DEXTER

Aluminum Oil/Grease Cap – For 9K–10K GD Hubs | DXT
SKU: 10AL-GO-CPDXR
$42.00 USD $42.00 USD $57.00 USD
Sale 26.32% $15.00 USD (26.32%)
Shipping calculated at checkout.
In stock
Description

This precision-machined aluminum oil/grease cap is designed for Dexter 9,000–10,000 lb General Duty (GD) axle hubs. With a 3.5" threaded diameter and 0.570" thread depth, it offers a secure fit and long-term durability in grease and oil bath applications. Built from corrosion-resistant aluminum, it's an ideal replacement for OEM Dexter and Valcrum threaded hub caps.

Detailed Information:
Thread Diameter 3.5"
Thread Depth 0.570"
Material Aluminum
Axle Rating 9,000–10,000 lbs (General Duty)
Fitting:

Engineered for use on Dexter GD axles with threaded hub assemblies. Offers direct replacement for Dexter and Valcrum models using 3.5" screw-in oil caps. Compatible with both grease and oil bath systems.

Features:
  • Premium Aluminum Body: Delivers enhanced corrosion resistance and structural reliability under heavy use.
  • Secure Fit: 3.5" thread diameter and 0.570" thread depth provide tight sealing and vibration resistance.
  • OEM-Grade Design: Matches Dexter Fortress series specs for optimal performance and durability.
  • Multipurpose Use: Supports both grease-filled and oil bath axle configurations.
Interchangeable Part Numbers:
  • K21-302-00
  • K71-704-00
  • 021-088-00
  • K21-257-00
  • ST-350-AM (Valcrum)
Product Overview:

This heavy-duty aluminum hub cap is a direct-fit upgrade for Dexter and Valcrum threaded hub systems on 9K–10K GD axles. Designed for long-lasting performance and built with precision specs, it ensures optimal sealing, protection, and ease of installation in demanding towing environments.

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 9K–10K GD Hubs | DXT

Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
0%
(0)
0%
(0)
0%
(0)
M
Michael J. Williams
Better Than the Original

This cap is a significant upgrade from the original plastic one on my trailer. It's solid aluminum, the threads are flawless, and it tightens down securely. No more worrying about cracks or leaks.

W
Whitney Brown
Solid Cap, A Little Pricey

This is a very well-made cap and fits my hub perfectly. The quality is excellent and I have no worries about it failing. The only reason for 4 stars is the price, but you get what you pay for.

H
Hube McShea
Solid and Well-Built Hub Cap

Got this to replace a leaky cap on my heavy-duty trailer. It was a direct screw-on, no issues at all. The aluminum construction is a big plus—feels like it will last forever. Great product.

M
Mano Sansome
Exactly What I Needed

My old cap was damaged and this was the perfect replacement. The dimensions were spot on. It's a high-quality part that gives me confidence my bearings are protected.

K
Kinnie Baston
Works for Oil Bath Conversion

I'm converting my hubs to an oil bath system and this cap was a key component. The threads were clean and it sealed up tight. No oil loss whatsoever. A great product for this purpose.

123
11.gif

SIGN UP FOR OUR NEWSLETTER!

Learn about our products, weekly sales, discount codes and much more
logo5.png