Caterpillar Oil Cooler Core 521-6481 is a hydraulic oil cooler product that removes excess heat from the hydraulic-oil circuit. It is listed for Caterpillar heavy-equipment applications; use part number 521-6481 as the primary identification reference.
- Part Number: 521-6481
- Brand: Caterpillar
- Product Category: Hydraulic Oil Cooler
- Equipment Type: Bulldozer, Water Fording Tractor
- Compatible Models: D6R III, D6T, D6R II, D7R II
- 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.





