The Genie 139330GT is a genuine OEM Wheel Drive with Brake designed for Genie telescopic and articulating boom lifts, including the S-40, S-45, Z-45/25, Z-45/25J IC Power, Z-45/25 IC, Z-45 XC, Z-45/25J IC, Z-51/30J, and S-60 J. As a factory-original component carrying a 57:1 gear ratio, this drive assembly delivers the precise torque multiplication and integrated braking performance that Genie specifies for these machines. Cross-reference 139330GT against your parts manual to confirm fitment before ordering.
Key Features
- Factory-Original Drive Assembly — Built to Genie's exact gear ratio and braking specifications, this OEM unit matches the engineering intent of the original installation — critical for a component that directly governs traction and stopping force.
- Integrated 57:1 Gear Reduction — The 57:1 ratio delivers the torque multiplication needed to propel boom lifts across uneven terrain while keeping travel speeds within safe operating parameters.
- Built-In Brake Function — The integrated brake holds the machine stationary on grades and engages automatically when drive demand is released, supporting safe positioning during elevated work.
- Direct-Mount Replacement — Engineered as a drop-in assembly for the drive wheel hub on compatible models, this unit connects using the original mounting interface without reworking surrounding components.
- Broad Boom Lift Compatibility — Fits a wide range of Genie S-series telescopic booms and Z-series articulating booms, including multiple IC Power and XC variants, making it a practical stock item for fleets running mixed Genie boom equipment.
- Drive and Brake Integrity Are a Safety-Critical Pair — A worn or failing wheel drive assembly can result in loss of traction control or inadequate braking on slopes — replacing with a genuine OEM unit restores the full safety margin designed into the machine.
The wheel drive assembly combines a hydraulic drive motor with an integral gearbox and spring-applied, hydraulically released brake into a single self-contained unit mounted at each driven wheel. The gearbox steps down motor speed through a 57:1 reduction to produce the high torque needed to move a loaded boom lift across grades and rough surfaces. When hydraulic pressure is released — whether the operator stops commanding travel or in the event of a pressure loss — the spring-applied brake automatically clamps, holding the machine in place and preventing unintended movement on inclines. A degraded or failed drive unit can cause sluggish or uneven propulsion, brake drag, or complete loss of drive at that wheel, all of which affect machine control and safe positioning at height.
Part Details
| Part Number | 139330GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Wheel Drive with Brake, 57:1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| S-60 J | S-60 J |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-51/30J | Z-51/30J |
| Z-45/25 IC | Z-45/25 IC |
| Z-45 XC | Z-45 XC |
| Z-45/25J IC | Z-45/25J IC |
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.
