The Genie 48999GT is a genuine OEM Check Valve designed for Genie GS bi-energy and DC scissor lifts and a wide range of Z-series articulating boom lifts. Sourced directly from Genie, this component meets the same hydraulic specifications as the part it replaces, ensuring a correct, direct swap with no guesswork. Cross-reference part number 48999GT against your parts manual to confirm fitment before ordering. Compatible models include the GS-2669BE, GS-3369BE, GS-4069BE, GS-2669DC, GS-3369DC, GS-4069DC, Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-51/30J, Z-45/25, Z-45/25J IC Power, Z-45/25J DC, Z-45/25J Bi-Energy, Z-40/23N, Z-40/23N RJ, Z33/18, Z-45 XC, Z-45/25 IC, Z-33 DC Power, Z-45/25J IC, Z-34 IC, Z-30/20 N, and Z-30/20N RJ.
Key Features
- Genuine OEM Hydraulic Integrity — Built to the exact port sizing and cracking-pressure spec of the original, so the hydraulic circuit behaves exactly as Genie engineered it.
- Correct Port Configuration — #8 port to #8 Male OFS thread form matches the factory plumbing connections on every compatible model, making this a direct, tool-ready swap.
- Broad Scissor and Boom Compatibility — Fits GS-series bi-energy and DC scissor lifts as well as a full range of Z-series articulating booms, from the compact Z-30/20 N through the heavy-duty Z-51/30J.
- Protects Hydraulic System Direction Control — A properly functioning check valve prevents backflow and maintains pressure in the hydraulic circuit; a failing one causes drift, sluggish movement, or loss of lift function.
- Aerial-Lift Safety Compliance — Hydraulic check valves are load-holding components on aerial equipment. Using a genuine OEM valve supports the pressure-holding integrity that safe platform operation depends on.
A check valve is a one-way flow control component in the hydraulic system. Its job is to allow fluid to pass freely in one direction while blocking reverse flow, which keeps pressure locked in a circuit after the pump stops — holding a platform, boom, or actuator in position without drift. On Genie scissor lifts and Z-series articulating booms, check valves are used at critical points in the lift and drive circuits, and a worn or leaking valve can cause the platform to settle under load, respond erratically, or fail to hold position entirely. Replacing a faulty valve with a correct-spec OEM unit restores proper directional control and ensures the hydraulic system performs as the machine was designed to operate.
Part Details
| Part Number | 48999GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Check Valve, #8 Port - #8 Male OFS |
Compatibility & Fitment
| Name | Model |
|---|---|
| GS-2669BE | GS-2669BE |
| GS-3369BE | GS-3369BE |
| GS-4069BE | GS-4069BE |
| GS-2669DC | GS-2669DC |
| GS-3369DC | GS-3369DC |
| GS-4069DC | GS-4069DC |
| Z-34/22 N | Z-34/22 N |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-51/30J | Z-51/30J |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| Z33/18 | Z33/18 |
| Z-45 XC | Z-45 XC |
| Z-45/25 IC | Z-45/25 IC |
| Z-33 DC Power | Z-33 DC Power |
| Z-45/25J IC | Z-45/25J IC |
| Z-34 IC | Z-34 IC |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
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.
