Caterpillar Hydraulic Cylinder Seal Kit 525-3504 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 525-3504 as the primary identification reference.
- Part Number: 525-3504
- Brand: Caterpillar
- Product Category: Seals & Filters
- Equipment Type: Excavator
- Compatible Models: M325B, 336D2, 345B II, 345B L, 345C L, 345D L, 349D L, 350-A, 325B LN, 345B II MH, 325B L, 330B, 330D, 336D, 349D2 L, 349D2, 340D L, 325C FM, 336D2 L, 349D, 330B L, 330B LN, 330D L, 336D L, 325C, 345B, 345C, 345D
- 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.





