Idler Hub, 3500#, 5 x 5.5, WHITE, Dexter, 1/2" Stud, Cupped & Studded, Star Shaped
Dexter idler hub for compatible 3,500 lb trailer axle applications using a 5 on 5.5" wheel bolt pattern. This hub is cupped and studded with installed races and 1/2" wheel studs.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number / SKU | 8-256-5 |
| Brand | Dexter |
| Product Type | Idler trailer hub |
| Axle Rating Application | For compatible 3,500 lb axle applications |
| Bolt Pattern | 5 on 5.5" |
| Wheel Studs | 1/2" studs installed |
| Hub Style | Star shaped, cupped and studded |
| Color / Finish | White |
| Quantity Included | 1 idler hub |
Fitment / Application
| Category | Details |
|---|---|
| Trailer System | Idler hub position on compatible trailer axle setups |
| Primary Fit | Compatible 3,500 lb axle applications using 5 on 5.5" wheels |
| Fitment Method | Verify axle rating, spindle/bearing requirements, seal size, wheel bolt pattern, and stud size before ordering |
| Important Note | Hub fitment is not determined by axle capacity alone. Confirm bearing, race, seal, and spindle compatibility before installation. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| Dexter Hub | Trusted trailer axle component brand for service and replacement applications |
| 5 on 5.5" Bolt Pattern | Matches compatible trailer wheels using the same 5-lug spacing |
| Cupped & Studded | Races and 1/2" studs are already installed in the hub |
| Idler Hub Design | Used on non-braking hub positions where a drum brake hub is not required |
Overview
The Dexter 8-256-5 is a white, star-shaped idler hub for compatible 3,500 lb trailer axle applications. It uses a 5 on 5.5" wheel bolt pattern and comes cupped and studded, with races and 1/2" wheel studs installed. This listing is for one idler hub only.
R&P Service Insight
Trailer hubs should be matched by measurements and internal bearing requirements, not only by the axle weight rating. Before ordering, confirm the full hub stack so the hub, spindle, bearings, seal, and wheel all match correctly.
- Bolt Pattern: Confirm the trailer wheel uses a 5 on 5.5" pattern.
- Stud Size: This hub is listed with 1/2" wheel studs.
- Hub Type: This is an idler hub, not a brake drum hub.
R&P Knowledge Hub
Compatibility: Designed for compatible 3,500 lb trailer axle applications using the correct spindle, bearing, seal, and 5 on 5.5" wheel bolt pattern.
Vehicle / System Fit: Trailer idler hub position where no brake drum is used.
Installation Notes: Verify bearings, races, grease seal, dust cap, lug nuts, and wheel compatibility before installation. Bearings, seals, caps, and lug nuts are not included unless separately stated.
Performance Insight: A properly matched idler hub supports the wheel assembly and allows smooth rotation on the spindle. Correct bearing and seal matching is critical for safe trailer service.
Brand & Fitment Note
Selling Brand: Dexter
Application Reference: 3,500 lb axle and 5 on 5.5" bolt pattern references describe compatible trailer hub applications only.
What This Means: This listing is for a Dexter idler hub, part number 8-256-5, supplied as a cupped and studded hub.
Before Ordering: Verify axle rating, spindle style, bearing numbers, seal size, wheel bolt pattern, and stud size before installation.
R&P Repair Insight
When replacing a trailer hub, the safest match comes from confirming the original hub number and the bearing/seal stack. If the original hub is damaged or unreadable, remove the hub and verify the bearing numbers, seal number, spindle measurements, and wheel pattern before ordering.
- Check Bearing Fit: Match the inner and outer bearing requirements to your spindle before installation.
- Check Seal Fit: Confirm the grease seal size required for your axle and spindle setup.
- Check Wheel Fit: Confirm 5 on 5.5" bolt pattern and 1/2" stud compatibility with your wheel and lug nuts.
Features
Dexter 8-256-5 Hub
Dexter idler hub for compatible 3,500 lb axle applications where part number 8-256-5 is required.
5 on 5.5" Bolt Pattern
Built for compatible 5-lug trailer wheels using a 5 on 5.5" wheel bolt pattern.
Cupped & Studded
Supplied with races installed and 1/2" wheel studs already in place.
White Star-Shaped Design
White star-shaped idler hub configuration for the matching trailer axle and wheel setup.
Included Components
| Quantity | Item |
|---|---|
| 1 | Dexter 8-256-5 white idler hub |
| Installed | Races / cups |
| Installed | 1/2" wheel studs |
| Not Included | Bearings, grease seal, dust cap, lug nuts, spindle hardware, and grease unless separately stated |
