Match the part number, measurements and connection points that apply to your trailer.
| 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. |
Part Number: BK-7000-O-CAP
This is a complete trailer oil bath bearing kit designed for axles using a #42 spindle. The kit includes inner and outer bearings with matched races, oil bath cap, seal, and standard retaining hardware. Commonly used on 6,000 lb and 7,000 lb 8-lug trailer axles.
| Spindle Type | #42 spindle |
| Spindle Dimensions | 1.75" inner / 1.25" outer |
| Axle Ratings | 6,000 lb and 7,000 lb |
| Lug Configuration | 8-lug hubs |
| Brake Compatibility | With or without brakes |
| Axle Types | Standard and EZ-Lube style axles |
| Common Brands | Dexter, AL-KO, Rockwell, Lippert |
Important: Not all axles use the same outer bearing. Always verify spindle measurements and existing bearing numbers before ordering.
| Outer Bearing | 14125A |
| Outer Race | 14276 |
| Inner Bearing | 25580 |
| Inner Race | 25520 |
| Seal | 10-63 (2.25" ID × 3.38" OD) |
| Oil Bath Cap | 21-35 |
| Cotter Pin | Included |
| Tang / Lock Washer | Included |
This kit ships with a 2.25" ID seal. Some axles require a 2.125" ID seal. Verify seal size prior to installation.
