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. |
Part Number: RW12011-2
These replacement oil cap assemblies are designed for Rockwell hubs and drums rated between 9,000 lb and 16,000 lb. Each cap uses a 3.75" OD thread with 8 TPI and replaces Rockwell part number 12011-1. Common on Rockwell American brake drums built after 1996 and compatible with select Kodiak disc brake hubs using this thread size.
| Specification | Detail |
| Thread Diameter | 3.75" |
| Thread Pitch | 8 threads per inch |
| Axle Rating | Common on 9K–16K Rockwell axles |
| Replaces | Rockwell 12011-1 |
Fitment varies by axle and hub manufacturer. Always compare thread size, diameter, and O-ring seat dimensions before installation.
