Ensure reliable engine performance with the 4955855 Main Bearing (Standard) Set, specifically designed for Cummins Engine 4B3.9, B4.5, and QSB models. Manufactured to meet OEM standards, it replaces part number 3802010 for optimal durability and fit.
| PN | NAME | QTY |
|---|---|---|
| 3978818(Supersessions:3929016) | MAIN BEARING | 4 |
| 3978820(Supersessions:3929021) | MAIN BEARING | 5 |
| 4938948(Supersessions:3926723) | CRANKSHAFT THRUST BEARING | 1 |