The Genie 107788GT is a genuine OEM 3-Position 4-Way Proportional Valve designed for Genie S series telescopic boom lifts, SX series super booms, and Z series articulating boom lifts. Sourced directly from Genie, this valve meets the original design and performance requirements for the hydraulic control systems found across these machine families. Compatible models span a wide range of boom lift variants including the SX-150, SX-180, SX-135 XC, S-60 FE, S-60 DC, Z-135/70, ZX-135/70, Z-60/37 FE Hybrid, Z-45 XC, and many more — cross-reference part number 107788GT against your parts manual to confirm fitment for your specific unit. This valve is the correct replacement when the original component shows signs of hydraulic drift, sluggish motion control, or loss of proportional response.
Key Features
- Genuine OEM Hydraulic Precision — Built to the original Genie specification for spool travel, flow rate control, and pressure rating, ensuring the valve modulates hydraulic flow exactly as the system demands.
- Direct Drop-In Replacement — Matches the original port configuration, solenoid connector, and mounting pattern for a straightforward swap with no rework of surrounding hydraulic lines or electrical harnesses.
- Broad Boom Lift Compatibility — Fits a wide range of Genie telescopic and articulating boom lifts across the S, SX, and Z families, including hybrid, DC, FE, and XC variants.
- Smooth, Proportional Motion Control — A functioning proportional valve allows the operator to feather boom and platform movements with precision; a worn or sticking valve causes jerky, uncontrolled motion that disrupts work positioning.
- Critical to Safe Aerial Operation — Proportional hydraulic control directly affects the operator's ability to manage boom movement at height. Replacing a degraded valve restores the controlled, predictable response required for safe aerial work.
A proportional 3-position 4-way valve is a hydraulic directional control valve that manages both the direction and speed of hydraulic flow to a cylinder or motor. In a boom lift, it governs functions such as boom extension, elevation, and swing — allowing the operator to make gradual, precise movements rather than abrupt on/off actuation. When this valve fails or sticks, the result is loss of smooth motion control, hydraulic drift, or complete loss of function in the circuit it serves, which can compromise both productivity and safe operation at height.
Part Details
| Part Number | 107788GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | 3-Position 4-Way Proportional Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| SX-135 XC | SX-135 XC |
| S-60 FE Hybrid | S-60 FE Hybrid |
| S-60 DC | S-60 DC |
| S-60 FE | S-60 FE |
| Z-135/70 | Z-135/70 |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| Z33/18 | Z33/18 |
| ZX-135/70 | ZX-135/70 |
| Z-60/37 DC | Z-60/37 DC |
| Z-60/37 FE Hybrid | Z-60/37 FE Hybrid |
| Z-45 XC | Z-45 XC |
| Z-60 DC | Z-60 DC |
| Z-60 FE Hybrid | Z-60 FE Hybrid |
| Z-33 DC Power | Z-33 DC Power |
| Z-45 FE Hybrid | Z-45 FE Hybrid |
| Z-45 DC | Z-45 DC |
| Z-60 FE | Z-60 FE |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
