Caterpillar 6.4mm Inner Diameter Bulk Hose 456-8409 is a heater core product that transfers engine-coolant heat into cab airflow. It is listed for Caterpillar heavy-equipment applications; use part number 456-8409 as the primary identification reference.
- Part Number: 456-8409
- Brand: Caterpillar
- Product Category: Heater Core
- Equipment Type: Heavy Equipment
- Compatible Models: Refer to the official product source for fitment
- Engine Models: Confirm by equipment serial number
- Condition: New
Fitment can vary by machine configuration and serial-number range. Compare the original part number, dimensions, connectors and mounting points before purchase.





