Superior Sealing and Contamination Resistance:
Advanced Seal Technology: Utilizes multi-stage, proprietary Caterpillar seal packages that are highly effective at keeping contaminants out and hydraulic fluid in. This dramatically extends seal life and prevents internal leakage (which causes sluggish steering and drift).
Durability in Harsh Environments: The sealing system is specifically designed to perform in the dirty, dusty, and wet conditions typical of mining and construction sites.
This 349-8517 steering cylinder is used for 730 725 735 caterpillar truck.






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