PC75UU-2 Hydraulic Boom Cylinder for komatsu Excavator Spare Parts 21W-63-02151 Aftermarket High Quality

This high-strength aftermarket hydraulic boom cylinder is precision manufactured as a direct OEM replacement for Komatsu PC75UU-2 compact zero-tail mini excavator. As the core hydraulic power component of front working attachment, it controls boom lifting and lowering for excavation, pipeline construction, landscaping and light earthmoving jobs. Widely used in urban narrow construction sites, residential renovation and small municipal projects.

All cylinders are strictly produced following Komatsu original technical drawings and OEM standards, with fully consistent mounting dimensions, pin hole spacing and hydraulic port layout. Direct bolt-on installation without cutting, welding or any on-site secondary modification.

1. 100% Exact OEM Fit for PC75UU-2 Mini Excavator

   All assembly sizes, lug spacing and oil port positions fully match original PN 21W-63-02151 cylinder, seamlessly connecting boom linkages and hydraulic pipelines for stable continuous light-medium load operation in narrow urban areas.

2. Compact Reinforced Design for Zero-Tail Mini Machine

   Thickened cylinder tube and reinforced small lug plates are customized for compact mini excavator frequent short-distance work, resisting minor collision abrasion and cyclic loads to extend service life effectively.

3. Multi-Round Strict Pre-Delivery Inspection

   Each finished cylinder undergoes full-stroke reciprocating cycle test and high-pressure airtight leak detection, completely eliminating hidden internal and external oil leakage risks.

4. Excellent Cost Performance

   Delivers the same stability and service lifespan as genuine Komatsu OEM spare parts, greatly cutting repeated procurement costs for mini excavator repair shops, small equipment rental fleets and global spare parts wholesalers.

5. Flexible Global Logistics Support

   In-stock items can be dispatched within 3 working days. Air freight handles urgent breakdown rush orders; sea freight offers cost-effective bulk wholesale shipping to Africa, Southeast Asia, Middle East markets.

Our factory has over 10 years of mature experience in R&D and mass production of hydraulic cylinders for Komatsu UU series compact zero-tail mini excavators including PC75UU-2. We supply complete boom, arm and bucket cylinder assemblies with mature forging, honing and heat treatment craft, plus full-process strict quality control. Our aftermarket hydraulic cylinders are exported worldwide all year round, winning long-term trust and consistent positive feedback from global machinery spare parts dealers.