The Genie 74379GT is a genuine OEM Upper Secondary Arm Assembly designed for Z-34/22 articulating boom lifts. Sourced directly from Genie, this assembly delivers the exact fit and structural integrity required for safe, reliable boom operation across the Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-34/22 IC, and Z-34 IC models. As a genuine OEM component, it meets the same engineering standards as the original part installed at the factory, giving you confidence that the assembly will perform as intended from installation onward. Cross-reference part number 74379GT against your machine's parts manual to confirm fitment before ordering.
Key Features
- Genuine OEM Structural Integrity — Engineered to Genie's original dimensional and load-bearing specifications, ensuring the secondary arm carries and transfers boom forces exactly as designed.
- Direct-Fit Replacement — Mounts to the existing pivot points and hardware of the Z-34 articulating boom structure with no reworking of mounting locations or hardware needed.
- Broad Z-34 Family Coverage — Compatible with Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-34/22 IC, and Z-34 IC variants, making this the correct assembly across the full Z-34 line.
- Boom Articulation Performance — A correctly functioning secondary arm maintains smooth, predictable boom movement and full range of articulation; a worn or damaged arm introduces play, misalignment, and loss of reach positioning.
- Critical Safety Component — The secondary arm is a primary structural member of the boom linkage. Using a genuine OEM assembly ensures the component meets the load ratings and tolerances that underpin safe platform operation on Genie Z-34 articulating booms.
The upper secondary arm assembly forms a key link in the articulating boom's folding-arm structure, connecting the primary boom section to the upper boom and platform assembly. It allows the boom to extend, fold, and position the work platform through its designed range of motion while bearing the combined loads of the platform, occupants, and tools. When this assembly is cracked, bent, or worn at its pivot interfaces, the boom can lose positional accuracy, develop unwanted movement at the platform, or fail to hold position under load — all conditions that compromise both productivity and operator safety. Replacing it with the correct OEM assembly restores the structural chain of the boom to its original specification.
Part Details
| Part Number | 74379GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Upper Secondary Arm Assembly, Z34 |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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-34/22 IC | Z-34/22 IC |
| Z-34 IC | Z-34 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.
