Dexter Fortress Threaded Aluminum Oil Cap, 9,000 lbs – 10,000 lbs General Duty, K21-302-00 This Fortress aluminum oil cap is designed to fit 9,000-10,000 lb. axles. Whether you are using oil or grease, this cap will help keep your bearings lubed. The Fortress aluminum oil caps are engineered and designed by Dexter as a bona-fide superior bearing protection solution for trailer axles. Increase the life of your trailer, by only using Dexter’s top of the line, durable, quality replacement parts. The large side fill/drain plug allows for easy maintenance of your trailer. Replacement For: Dexter- K71-704-00, 021-088-00, K21-257-00 Valcrum- ST-350-AM Specifications: Material- Aluminum Axle Capacity- 9,000 lbs. – 10,000 lbs. General Duty Thread Diameter- 3.5″ Thread Depth- 0.570″ Dexter K21-302-00
