At a Glance
- >Replacement oil cap sealing O-rings
- >Fits 021-88-00 oil bath caps
- >Designed for 10K General Duty axles after 2009
- >Helps maintain proper oil bath hub sealing
- >Sold as a set of four (4)
- Brand: Dexter
- SKU: 010-163-00LOTOF4
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: 010-163-00LOTOF4
Replacement oil cap O-ring set designed for use with 021-88-00 oil bath caps commonly found on10,000 lb General Duty trailer axles produced after 2009. These O-rings create the seal betweenthe oil cap and hub body to prevent oil leakage and contamination.
Listing includes four (4) oil cap O-rings.
Oil bath hubs rely on a sealed oil cap to retain lubricant inside the hub cavity. The O-ringprovides the sealing surface between the aluminum oil cap and hub body. Over time these sealscan flatten, crack, or become brittle due to heat and oil exposure.
Replacing worn O-rings during routine hub inspection helps prevent oil leakage and contaminationof the hub bearings. Always verify oil cap model numbers and seal diameter before ordering.
| Specification | Detail |
|---|---|
| Part Number | 010-163-00LOTOF4 |
| Quantity | 4 O-Rings |
| Outer Diameter | 3.50" |
| Compatible Oil Cap | 021-88-00 |
| Axle Type | 10K General Duty (After 2009) |