2 – Idler Hub Assemblies
6 on 5.5" Bolt Pattern • Fits #42 Spindle
This listing includes two complete 6-lug idler hubs designed to convert many mobile-home style axles or service standard #42 trailer spindles found on 5200–7000 lb axles. Each hub comes pre-packaged with new bearings, seal, and hardware. These hubs use the common 6 on 5.5" wheel bolt pattern.
Features
- Complete pair — two hubs with bearings and hardware
- Standard 6 on 5.5" trailer bolt pattern
- Compatible with #42 trailer spindles used on many 5200 lb, 6000 lb, and some 7000 lb axles
- New 25580 inner and 15123 outer bearings included
- Includes new grease seals (2.25" ID standard)
- Designed for easy replacement of many mobile-home style hubs
Specifications
| Bolt Pattern | 6 on 5.5" |
| Spindle Type | #42 (1.25" outer bearing / 1.75" inner bearing) |
| Outer Bearing | 15123 (1.25" ID) |
| Inner Bearing | 25580 (1.75" ID) |
| Seal Size | 2.25" ID (2.125" available upon request) |
| Quantity Included | 2 complete hubs |
| Part Number | RVIH6550-KITX2 |
Fitment Notes
Mobile-home axle dimensions vary significantly. Please confirm:
- Your outer bearing is 1.25" ID
- Your inner bearing is 1.75" ID
- Your grease seal surface matches 2.25" or 2.125"
- Your wheel bolt pattern is 6 on 5.5"
Measuring ensures proper fit, especially on older or modified mobile-home axles.
Hub brand may vary (Dexter, Al-Ko, Quality, Axis, etc.). Some hubs supplied may be new “take-off” units removed from new axles that were upgraded to brake hubs, but all hubs are new and unused.