The Genie 89678GT is a genuine OEM Needle Valve with Reverse Free Flow designed for Genie S-series telescopic boom lifts and Z-series articulating boom lifts. Sourced directly from Genie, this component delivers an exact match to the original part installed at the factory, ensuring correct hydraulic circuit behavior in your machine. Compatible with the S-40, S-45, and Z-60/34, this valve is the correct solution when the original needs to be replaced. Cross-reference part number 89678GT against your machine's parts manual to confirm application before ordering.
Key Features
- Genuine OEM Hydraulic Precision — Built to Genie's exact flow and metering specifications, so the valve regulates hydraulic flow at the correct rate for safe, controlled boom movement.
- Integrated Reverse Free Flow — The reverse free-flow function allows unrestricted return flow in one direction while maintaining needle-controlled metering in the other — preserving the intended hydraulic circuit logic of the original design.
- Direct Drop-In Replacement — Matches the original port configuration and thread spec, allowing this valve to seat and seal correctly without rework or adaptation to existing hydraulic lines.
- Confirmed Fitment — Compatible with the S-40, S-45, and Z-60/34 boom lifts, covering both Genie telescopic and articulating boom families.
- Operational Safety — A correctly functioning needle valve maintains controlled boom speed and prevents unintended movement during operation — critical on aerial work platforms where hydraulic integrity directly affects platform safety.
A needle valve controls the rate of hydraulic fluid flow through a circuit by using a slender, tapered pin to regulate the size of the flow passage. In aerial boom lifts, needle valves are used to manage the speed and smoothness of boom functions — too much flow and movement becomes abrupt or uncontrollable; too little and response becomes sluggish. The reverse free-flow feature built into this valve allows fluid to bypass the needle restriction when flowing in the return direction, which is essential for maintaining balanced, predictable boom response. When this valve wears, clogs, or fails, operators may notice erratic boom movement, slow function response, or loss of controlled deceleration — all of which signal that the valve needs immediate attention.
Part Details
| Part Number | 89678GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Needle Valve with Reverse Free Flow |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| Z-60/34 | Z-60/34 |
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.
