Caterpillar Hydraulic Cylinder Seal Kit 525-3494 is a seals & filters product that supports fluid sealing, contamination control and system protection. It is listed for Caterpillar heavy-equipment applications; use part number 525-3494 as the primary identification reference.
- Part Number: 525-3494
- Brand: Caterpillar
- Product Category: Seals & Filters
- Equipment Type: Excavator, Mobile Hyd Power Unit
- Compatible Models: M325C MH, M325B, 390D, 330-A, 325 LN, 322B L, 330 L, 330-A L, 325B LN, 385C L, 325-A L, 325B L, 322 LN, 325C L, 330C LN, 320C, 330B, 330C, 330C FM, 322B, 322C, 390D L, 322-A, 330 LN, 325-A, 325D MH, 325C FM, 322 L, 325 L, 322B LN
- 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.





