021-259-00 - Aluminum Oil/Grease Cap – Fortress Bolt-On (Cap Only) – For 9K–12K Hubs | DXT HYDRAPRO Built with quality steel and

Built with quality steel and designed to support standard 8K configurations

Heavy-Duty Design: Built for demanding trailer disc brake applications

Compatible with most 10K-rated straight beam trailer setups

Designed to fit standard 2-5/16" trailer balls

it's a dependable choice for trailers using surge-style hydraulic brake systems

021-259-00 - Aluminum Oil/Grease Cap – Fortress Bolt-On (Cap Only) – For 9K–12K Hubs | DXT HYDRAPRO Built with quality steel andThis is a standalone Fortress series aluminum bolt on hub cap, designed for Dexter 9,00012,000 lb oil bath axle hubs. Built from corrosion resistant aluminum alloy, it replaces the cap onlyideal for servicing or replacing damaged units without needing a full kit. Detailed Information: Axle Rating 9,00012,000 lbs Mount Style Bolt On Material Aluminum Alloy Application Oil Bath Hub Systems Fitting: Direct replacement for Dexter Fortress bolt on aluminum