The Genie 42439GT is a genuine OEM Level Sensor, 3 Deg designed for Genie S-series telescopic boom lifts and Z-series articulating boom lifts. As a direct OEM replacement, this sensor is built to the same specification as the original, ensuring consistent performance and correct calibration straight out of the box. It fits a broad range of Genie boom lift models — including the S-60, S-65, S-60 TRAX, S-65 TRAX, Z-45/25, Z-45/25J IC Power, Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-51/30J, Z-40/23N, Z-40/23N RJ, Z-33/18, Z-30/20 N, Z-30/20N RJ, Z-25/8, Z-20/8, and Z-20/8N — making it a widely applicable part across the Genie boom lift lineup. Always cross-reference part number 42439GT against your machine's parts manual to confirm this is the correct item for your unit.
Key Features
- Genuine OEM Calibration — Manufactured to Genie's original specification, this sensor delivers the 3-degree tilt threshold the machine's control system expects, with no re-calibration required after installation.
- Direct OEM Replacement — Replaces the original sensor on compatible boom lifts using the existing mounting points and wiring connections, keeping the swap clean and straightforward.
- Wide Boom Lift Compatibility — Fits Genie S-series telescopic booms and a wide range of Z-series articulating booms, covering both internal-combustion and electric drive variants across multiple platform configurations.
- Accurate Tilt Detection — A correctly functioning level sensor monitors machine inclination and signals the control system when the unit approaches an unsafe operating angle, keeping critical safety interlocks active and responsive.
- Operational Safety — On aerial boom lifts, the level sensor is a core element of tilt detection and interlock systems. A failed or drifting sensor can compromise the machine's ability to detect out-of-level conditions — replacing it with a verified OEM part restores that protection.
A level sensor monitors the angle of the machine relative to level ground. When the tilt exceeds the rated threshold — in this case 3 degrees — the sensor signals the control system to restrict or halt machine functions, helping prevent tip-over conditions during elevated operation. On boom lifts, where the center of gravity shifts significantly as the boom extends and rotates, accurate tilt sensing is critical to safe operation. A sensor that has drifted out of specification or failed entirely may allow the machine to operate outside safe parameters, or may trigger nuisance shutdowns that interrupt productive work — either outcome calls for immediate replacement with the correct OEM part.
Part Details
| Part Number | 42439GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Level Sensor, 3 Deg |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 | S-60 |
| S-65 | S-65 |
| S-60 HC | S-60 HC |
| S-60 TRAX | S-60 TRAX |
| S-65 TRAX | S-65 TRAX |
| 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-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| Z33/18 | Z33/18 |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-25/8 | Z-25/8 |
| Z-20/8 | Z-20/8 |
| Z-20/8N | Z-20/8N |
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.
