YNF16867 2036958 Rotor HPV050 Hydraulic Pump Cylinder Block for Hitachi EX100-5 EX120-5

The YNF16867 cylinder block (rotor), replacing OEM number 2036958, is designed for the HPV050 hydraulic pump used on Hitachi EX100-5 and EX120-5 excavators. As the core component of the pump’s rotating group, the rotor houses the pistons and ensures stable hydraulic pressure output. Wear or damage to this part often results in pressure loss, overheating, slow hydraulic response, and increased vibration.

Manufactured from high-grade alloy steel and precision CNC-machined, the YNF16867 rotor offers excellent durability, smooth piston channel finish, and consistent hydraulic performance under heavy-duty conditions. Its dimensional accuracy ensures proper sealing and reduces internal leakage, restoring the pump’s original efficiency.

This cylinder block is widely used by hydraulic pump rebuilders, parts distributors, and excavator maintenance workshops. Replacing the rotor helps extend pump life, improve machine responsiveness, and significantly reduce repair downtime.