At a Glance
- > Oil Seal – 10-56 (3.125" ID × 4.500" OD)
- > Inner Bearing – 28682 (2.25" ID)
- > Inner Race – 28622 (3.844" OD)
- > Outer Bearing – 3984 (2.625" ID)
- > Outer Race – 3920
- Brand: Dexter
- SKU: BK-12000-21-36-KIT
Match the part number, measurements and connection points that apply to your trailer.
| Bearings | Match inner and outer bearing numbers. |
|---|---|
| Seal | Match the seal number or dimensions. |
| Bolt Pattern | Verify the complete lug pattern. |
| Brake Size | Confirm when applicable. |

BK-12000-21-36-KIT
This complete Oil Bath Bearing Kit includes everything needed to service or rebuild Dexter 12K–15K hubs, including both inner and outer bearings, matching races, oil seal, oil cap, O-ring, and center plug. Designed for standard-duty and heavy-duty oil bath applications.
| Axle Rating | 12,000–15,000 lb (Dexter Oil Bath) |
| Hub Compatibility | 8-214 & 8-216 Hubs |
This bearing kit fits the following Dexter hubs and hub/drums:
Common on oil bath axles used in heavy-duty equipment trailers, lowboys, dump trailers, and industrial transport.
Selected from R&P customer feedback for Hub / Drum products and related trailer service.
“I've ordered lots of trailer repair parts from them, always fast service, well packed, and the right parts. I highly recommend.”
“Would like to say thanks to everyone at R and P Carriages parts were delivered fast and with the very helpful staff, the right parts were sent the first time. Thanks Happy Holiday's.”
“Received swivel d-ring tie down 4 days after my wife ordered them , great price and came with backing plates. I received exactly what I paid for, thanks for the great service. Chris Davis , Mooresville NC”
Need help matching a part? Send us photos, part numbers and measurements. We can help narrow it down before you order.