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. |
Four complete oil cap service kits including caps, sealing O-rings, and center plugs for 21-88 oil bath applications. Designed for 10K general duty axles manufactured after 2009.
Oil bath systems rely on proper sealing to retain lubricant and protect bearings. Replacing caps, plugs, and O-rings together ensures consistent sealing and prevents leaks.
| Part Number | 21-88-KIT-LOTOF4 |
| Cap Size | 3.50" OD |
| Application | 21-88 Oil Cap Systems |
| Axle Rating | 10K GD (Post 2009) |
| Material | Standard Oil Bath Components |
| Part Number | Quantity | Description |
|---|---|---|
| 21-88 | 4 | Oil Bath Cap (3.50") |
| 010-163-00 | 4 | O-Ring for 21-88 Cap |
| 046-032-00 | 4 | Center Oil Plug |
Selected from R&P customer feedback for Bearing / Seal 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.
