UFP Unique Functional Products

Trailer Buddy Replacement Trailing Arm w/ Vault 3,750 lb 5-Lug Hub #43038

SKU: 43038

  • Sale
  • Regular price $ 127.00

Trailer Buddy Replacement Trailing Arm w/ Vault 3,750lb 5-Lug Hub #43038

This replacement trailing arm works with all Trailer Buddy-UFP 3750lb. capacity torsion axles.  Mounts easily to the desired position by splines that allow for ride height adjustment.  The complete assembly is ready to be bolted on to existing torsion axle with mounting bolt (included).  Standard 4-Bolt brake flange integrates into the arm and allows for an instant upgrade for brakes.


  • Trailing arm and hub are zinc plated for superior corrosion protection
  • VAULT Maintenance-free hybrid oil hub requires no maintenance and is completely sealed
  • Tooth and Groove or Spline attaches easily to any 3750lb. UFP Torsion axle
  • 4-Bolt Brake Flange integrated into trailer arm
  • Mounting bolt, nut, and washer are included
  • Tapered spindle size is 1 3/8" x 1 1/16"
  • Bearings and Seal are pre-packed with VAULT Hybrid Oil
    • 68149 Inner Bearing and 44649 Outer Bearing
    • 1.68 ID Seal
  • VAULT hub cap seals the hub and maintains slight pressure in hub

UFP Torsion Axle end unit trailing arm with VAULT Hybrid oil pre-packed 5-Lug hub.