The Genie 1257086GT is a genuine OEM Priority Flow Control Valve designed for Genie GS large-frame scissor lifts, including the GS-3384, GS-3390, GS-4390, and GS-5390. As a direct factory replacement, this valve carries Genie's OEM engineering standards, ensuring it matches the hydraulic circuit specifications your machine was built around. Cross-reference part number 1257086GT against your parts manual to confirm fitment before ordering.
Key Features
- Rated at 4.3GPM — Flow rate matches the hydraulic system demand of large-frame GS scissor lifts, keeping lift and drive functions operating within designed parameters.
- Genuine OEM Hydraulic Precision — Built to Genie's exact tolerancing for spool geometry and pressure drop, so flow priority between circuits is maintained as engineered — not approximated.
- Direct Drop-In Replacement — Mates to existing hydraulic porting and mounting interfaces on the GS-3384, GS-3390, GS-4390, and GS-5390 with no rework to lines or manifolds.
- Restores Proper Hydraulic Priority Sequencing — A failed or worn priority valve causes erratic lift response or loss of steering/drive priority; this valve restores correct circuit hierarchy immediately upon installation.
- Safety-Critical Hydraulic Function — Priority flow control directly governs which hydraulic circuit receives flow first; correct valve performance is essential to predictable platform movement and safe machine operation on Genie scissor lifts.
A priority flow control valve manages how hydraulic fluid is distributed between competing circuits in the machine's hydraulic system — directing a set flow rate to the highest-priority function first, typically steering or platform lift, before allowing excess flow to secondary circuits. On large-frame GS scissor lifts, this valve is essential to maintaining consistent, controlled lift performance regardless of simultaneous system demands. When the valve wears, sticks, or fails, operators may experience sluggish or jerky platform movement, loss of drive response, or erratic behavior that can compromise safe operation at height.
Part Details
| Part Number | 1257086GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Priority Flow Control Valve, 4.3GPM |
Compatibility & Fitment
| Name | Model |
|---|---|
| GS-3384 | GS-3384 |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
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.
