The 4089726 Engine Piston Kit is designed for Cummins B4.5 and QSB4.5 engines, replacing part number 3969036. Precision-engineered for durability, it ensures optimal engine performance and reliable compatibility for heavy-duty applications.
| PN | NAME | QTY |
|---|---|---|
| 3939375 | RETAINING RING | 2 |
| 3939374 | PISTON PIN | 1 |
| 3969036 | ENGINE PISTON | 1 |
| 4089724 | PISTON RING SET | 1 |
| -3932519 | COMPRESSION PISTON RING | 1 |
| -3940777 | COMPRESSION PISTON RING | 1 |
| -3932520 | OIL PISTON RING | 1 |