replacement crankshaft, part number 313-3997, for CAT excavator and compatible heavy-equipment applications.
- Primary part number: 313-3997
- Alternative part numbers: None listed
- Compatible brands: CAT
- Equipment type: Engine, Excavator
- Application reference: Caterpillar CAT Engine C13 Excavator 345C 345D 349D
- Engine models: C13
- Condition: replacement
Please verify the primary/alternative part number, connector, dimensions, machine model and engine serial number before ordering.





