K21-301-00 - Fortress Threaded Aluminum Oil Cap – 10K–15K Axles | DXT
K21-301-00 - Fortress Threaded Aluminum Oil Cap – 10K–15K Axles | DXT
The Dexter K21-301-00 Fortress® Threaded Aluminum Oil Cap is a premium bearing protection solution designed for Dexter 10,000 lb to 15,000 lb trailer axles. Featuring a rugged cast aluminum body, reinforced viewing lens protection, and a large side fill/drain plug, it simplifies maintenance while providing superior sealing and long-lasting durability for oil-lubricated hub systems.
Detailed Information:
| Product Type | Threaded Oil Cap |
|---|---|
| Series | Fortress® |
| Axle Capacity Compatibility | 10,000 lb – 15,000 lb |
| Material | Cast Aluminum |
| Finish | Black Protective Coating |
| Lubrication Type | Oil or Grease |
| Seal Type | Rubber O-Ring & Gasket |
| Part Number | K21-301-00 |
Fitting:
Designed for Dexter 10K–15K trailer axle hub assemblies utilizing threaded oil caps. Compatible with both oil bath and grease-lubricated Fortress® hub systems.
Features:
- Fortress® Bearing Protection: Genuine Dexter threaded hub cap engineered for maximum bearing protection.
- Cast Aluminum Construction: Heavy-duty aluminum body provides exceptional durability and corrosion resistance.
- Reinforced Viewing Lens Protection: Integrated retainer ring helps protect the clear inspection window from impact damage.
- Large Side Fill/Drain Plug: Makes servicing and lubricant changes quicker and more convenient.
- Superior Sealing: Durable rubber O-ring and gasket help prevent leaks and contamination.
- Oil & Grease Compatible: Suitable for both oil bath and grease-lubricated hub applications.
- Black Protective Finish: Adds corrosion resistance for long service life in demanding environments.
Product Overview:
The Dexter K21-301-00 Fortress® Threaded Aluminum Oil Cap offers advanced protection and simplified maintenance for heavy-duty trailer hub assemblies. Designed for 10K–15K axles, it combines rugged construction, enhanced sealing, and convenient servicing features to maximize bearing life and ensure dependable trailer performance.
- Product type: Oil & Dust Caps





















