Hydraulic System Spare Parts
Hydraulics are the muscle behind every excavator boom, loader lift, and dozer tilt — and when pressure drops or a cylinder starts weeping, production stops. Parts in this category rebuild and maintain that circuit end to end: main and pilot pumps, travel and swing motors, main control valves and spool valves, boom and bucket cylinders, plus the seal kits, o-rings, and hoses that fail long before the iron does.
Slow cycle times, drifting cylinders, and internal leakage past a worn spool are the usual reasons parts get pulled, and the right replacement has to match displacement, pressure rating, and port configuration exactly. 3GEN supplies 100% OEM hydraulic components for 40+ machine brands, all shipped free worldwide — to any country — with full tracking and duties paid. Send our specialists a serial number, OEM number, or hydraulic schematic and they will match the correct pump or valve against 3,300+ parts in stock and a cross-reference of 564,000+ part numbers.
Frequently Asked Questions
Which Hydraulic Components Can You Supply?
For excavators, loaders, dozers, and more, we stock main and pilot pumps, travel and swing motors, main control valves, boom, arm and bucket cylinders, seal and O-ring kits, and hoses — all 100% OEM across 40+ brands from a 564,000+ part-number cross-reference.
My Pump Is Losing Pressure — Do I Replace It Or Rebuild It?
Start by isolating the fault: slow cycles and heat often trace to worn pump internals, while external drips point to seals or hoses. Send us the pump casting number or machine serial and our specialists identify whether a seal kit, individual component, or complete pump suits your case. Every option we quote is 100% OEM.
How Do I Order The Right Seal Kit For A Leaking Cylinder?
Cylinder seal kits are specific to bore and rod diameter, so measure both or quote the cylinder part number and machine serial. A weeping rod usually means the rod seal and wiper are gone; a drifting cylinder points to the piston seal. Give our team those figures and we match the exact kit before shipping.