Hydraulic repair part for GM18 — machine-fit internal components

| Full specs | Ask us for the data sheet |
| Condition | New · OEM-standard aftermarket |
| Warranty | 6–12 months |
| Lead time | Stock 48 h · Non-stock 5–15 days |
Internal hydraulic parts are listed by series. Match the series code and the spline tooth count. Send a photo of your old part on WhatsApp and we confirm before quoting.
Rotary groups, cylinder blocks, valve plates, piston assemblies, drive shafts and swash plates for the mainstream excavator pump and motor families — Kawasaki K3V/K5V, Rexroth A10V/A11V/A4VG, HPV, AP2D, M2X/M5X swing motors and GM/MAG travel motors. These are the internal repair parts that let you rebuild a pump or motor instead of replacing the whole unit.
The GM18 is an OEM-standard aftermarket replacement built to the original mounting, spline and port specification. Bolt-on installation — no machining or adaptation required.
Every unit is inspected and pressure-checked before dispatch and ships with a test report. Stock models leave within 48 hours; non-stock units are typically ready in 5–15 days. Sea, air and express shipping are available worldwide, and our team answers quote requests within 12 hours — usually much faster on WhatsApp.
Often yes — if the housing and shaft are still good, a new rotary group (cylinder block, valve plate, pistons and retainer) restores the pump to specification at a fraction of the cost of a complete unit.
Send the pump nameplate or a clear photo of the cylinder block and valve plate. The series code (K3V112, A10VSO28, HPV145, M2X150, MAG85 etc.) plus a photo is usually enough for us to identify it.
Yes — cylinder block kit, valve plate kit, piston assembly, retainer and seal kit are available separately or as a full rebuild set. Ask for a combined quote.
Send your part number, machine model or a nameplate photo — WhatsApp is fastest.
WhatsApp: +86 134 5036 5883 Email: [email protected]