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DEXTER

K21-304-00 - Aluminum Oil/Grease Cap – Fortress Threaded – For 10K–16K Hubs (3.75" O.D.) | DXT
SKU: 1016AL-GO-CPDXR
$34.49 USD $34.49 USD $58.77 USD
Sale 41.31% $24.28 USD (41.31%)
Shipping calculated at checkout.
In stock
Description

The Dexter Fortress threaded aluminum oil/grease cap is designed for heavy-duty 10K–16K hubs. Built from cast aluminum with a black protective coating, it features a clear lens protected by a red retainer ring and a large side plug for easy fill or drain. This versatile cap can function as either a grease or oil cap, ensuring reliable bearing protection. Includes 1 cap, watertight O-ring seal, and plug.

Detailed Information:
Axle Capacity 10,000–16,000 lb
Overall Diameter 3.75"
Material Cast Aluminum with Black Coating
Seal Watertight O-ring & Gasket
Lens Protection Red Retainer Ring
Plug Large Side Plug for Easy Access
Fitting:

Direct replacement for Dexter, Rockwell, Valcrum, and AL-KO oil/grease caps.

Features:
  • Dual Functionality: Works as both oil or grease cap.
  • Enhanced Durability: Cast aluminum body with protective black coating.
  • Lens Protection: Red retainer ring shields the clear viewing lens.
  • Easy Maintenance: Large side plug simplifies filling and draining.
  • Secure Fit: Threaded design with O-ring and gasket ensures a tight seal.
Interchangeable Part Numbers:
  • Dexter: K71-859-00, 021-219-00, 021-229-00, K21-226-00, K21-304-00
  • Rockwell: 12001
  • Valcrum: ST-375-AM
  • AL-KO: 568220, K568220
Product Overview:

This Fortress series threaded aluminum cap offers long-lasting protection and simplified maintenance for 10K–16K hubs. With a rugged design, versatile compatibility, and easy access for servicing, it ensures your trailer bearings remain properly lubricated and protected.

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.

For assistance, please contact us at +1-607-477-7774

Our support team is available during regular business hours ONLY
K21-304-00 - Aluminum Oil/Grease Cap – Fortress Threaded – For 10K–16K Hubs (3.75" O.D.) | DXT

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