Dexter Vault Disc Brake System - 3.5K / 3.7K, 5 Lug Setup, 2" Vault Cap

Helpful info below the parts list!

Replacement Parts Diagram Reference

Use the numbered diagram to identify the correct replacement part for your trailer disc brake assembly.

Diagram Parts

1. Wear Sleeve O-Ring
2. Stainless Steel Wear Sleeve
3. Caliper Mounting Bolts (Included with caliper)
4. Caliper (Includes brake pads and mounting bolts)
5. Wheel Seal
6. Inner Wheel Bearing
7. Inner Bearing Race (Pre-installed in hub/rotor; not shown in diagram)
8. Hub/Rotor Assembly
9. Outer Bearing Race (Pre-installed in hub/rotor; not shown in diagram)
10. Outer Wheel Bearing
11. Spindle Washer
12. Spindle Nut
13. Spindle Nut Retainer
14. Cotter Pin
15. Vault O-Ring

Additional Replacement Parts

The following service parts are also available but are not shown in the diagram:

• DB-35 Brake Pads
• Vault Hybrid Oil
• Vault Cap
• Bearing Buddy® Cap
• Grease Zerks
• Replacement Spindles

Complete Torsion Assemblies

The following units come pre-greased and pre-assembled, ready to bolt on to your trailer axle.

• Hub Only, No Caliper
• Complete with Zinc Caliper
• Complete with Aluminum Caliper

Need help finding the correct part? Contact our trailer parts experts with your axle capacity, part numbers, or pictures and we'll help you identify the correct replacement components for your trailer.

Installation Resources

Need help with installation? These resources will guide you through the process.

• 🎥 Installation Video – Watch Allred Trailer Service walk you through the complete installation process.
• 🛠️ Vault Hybrid Oil Service & Installation Guide – Learn how to properly service and refill your Vault Hybrid Lubrication System.
• 🔧 Vault Seal Installation Guide – Step-by-step instructions for installing a new Vault seal correctly.
• 🎥 Dexter Vault Commercial

If you have any questions during installation, our trailer parts experts are here to help.