Hitachi EX200 Track Adjuster Cylinder Seal Kit

This track adjuster cylinder seal kit is designed for Hitachi EX200 series hydraulic excavators, including EX200-1, EX200-2, EX200-3, EX200-5, and LC variants. The kit contains all necessary seals, O-rings, and wear rings to rebuild the hydraulic track tensioner cylinder. Manufactured to OEM specifications using high-grade nitrile rubber (NBR), polytetrafluoroethylene (PTFE), and polyurethane (PU) compounds, the seals withstand operating pressures up to 400 bar and temperature ranges from -30°C to +120°C. The kit fits cylinders with 85 mm rod diameter and 120-125 mm bore diameter, ensuring precise fitment and leak-free performance in demanding construction and mining environments. Cross-referenced with Hitachi OEM part numbers 4412826, 9186437, and 4430467, this aftermarket kit provides direct interchangeability for track adjuster cylinder repair on EX200 and ZX200 series machines. Each component is dimensionally verified for correct installation and long-term durability.