At a Glance
- >3,700 lb rated torsion arm assembly
- >Pre-assembled 10" disc brake rotor hub
- >5 on 4-1/2" bolt pattern
- >VAULT® Hybrid Lubrication System
- >No routine inspection, maintenance, or service required
- Brand: UFP by Dexter
- SKU: 43039ROTOR+ARM
Before You Order
Match the part number, measurements and connection points that apply to your trailer.
Fitment Check
| Part Number | Match the number stamped on the original bearing or seal. |
|---|---|
| Dimensions | Measure the mating surfaces when a number is unavailable. |
| Hub / Axle | Use capacity as context, not as the only fitment check. |
Product Details
UFP 3,700 lb Vault Torsion Arm Assembly with 10" 5-Lug Disc Rotor
Part Number: 43039ROTOR+ARM
Complete UFP torsion axle arm assembly rated at 3,700 lbs and pre-assembled with a 5-lug 10" disc brake rotor hub. This unit features the UFP VAULT® Hybrid Lubrication System, delivering advanced bearing protection without routine maintenance or servicing requirements.
The 5/8" torsion arm mounting bolt, nut, and washer are included.
Features
- 3,700 lb rated torsion arm assembly
- Pre-assembled 10" disc brake rotor hub
- 5 on 4-1/2" bolt pattern
- VAULT® Hybrid Lubrication System
- No routine inspection, maintenance, or service required
- 59 spline ridges (peaks)
Specifications
| Specification | Details |
|---|---|
| Rated Capacity | 3,700 lbs |
| Rotor Diameter | 9-3/4" |
| Bolt Pattern | 5 on 4-1/2" |
| Spindle Size | 1-3/8" x 1-1/16" Tapered |
| Spline Count | 59 Ridges (Peaks) |
Bearing & Seal Information
| Component | Part / Size |
|---|---|
| Inner Bearing | L68149 (1-3/8") |
| Inner Race | L68110 (Included) |
| Outer Bearing | L44649 (1-1/16") |
| Outer Race | L44610 (Included) |
| Seal | 1.68" I.D. x 2.56" O.D. |
On the rotor/hub, a minimum rotor thickness of 17mm (MIN THK 17.0 MM) will be stamped on the inside rear face of the rotor.
Verify spline count, spindle dimensions, bolt pattern, and axle rating before ordering.