Rockwell 12K Oil Bath Trailer Hub Kit – 8 on 6.5, 4.75" Pilot
Part Number: 812865A-1475-KIT
Complete Rockwell-style oil bath trailer hub kit commonly used on 12,000 lb axle systems. This hub features an 8 on 6.5 wheel bolt pattern with a 4.75" pilot diameter and is typically found on Rockwell and Quality Trailer heavy-duty axles.
Features
- Complete oil bath hub kit for Rockwell-style 12K trailer axles
- 8 on 6.5 wheel bolt pattern
- 4.75" pilot diameter hub
- Oil bath lubrication design
- Includes bearings, seal, oil cap components, and lug nuts
Specifications
| Specification | Detail |
|---|---|
| Axle Rating | Typically used on 12,000 lb trailer axles |
| Bolt Pattern | 8 on 6.5 |
| Pilot Diameter | 4.75" |
| Stud Size | 5/8"-18 |
| Hub Style | Oil bath trailer hub |
Kit Contents
- Rockwell-style 12K hub (4.75" pilot)
- Inner bearing: 39590
- Outer bearing: JM205149
- Oil seal: 10-56
- Oil cap: 12011
- Oil cap center plug: 046-032-00
- Oil cap O-ring: 010-258-00
- Eight (8) flange lug nuts, 5/8"-18
Commonly used on Rockwell and Quality Trailer 12K axle systems with a 4.75" pilot hub that uses a 10-56 oil seal. Not interchangeable with Rockwell hubs that use a 4.88" pilot diameter or alternate seal configurations. Verify pilot diameter, bearing numbers, and seal size before ordering.