The Genie 128039GT is a genuine OEM Upper Section Boom Assembly designed for the Z-30/20N and Z-30/20N RJ articulating boom lifts. Sourced directly from Genie, this assembly matches the original specification and interfaces exactly as the factory-installed component — no adaptation required to fit the upper boom structure of these machines. Whether you are restoring full reach capability after damage or replacing a worn assembly as part of scheduled maintenance, this is the correct part for the job. Cross-reference part number 128039GT against your Genie parts manual to confirm applicability to your specific machine serial range before ordering.
Key Features
- Genuine OEM Construction — Manufactured to Genie's original design tolerances, ensuring the boom sections articulate, extend, and retract with the structural integrity the machine was built around.
- Direct Bolt-In Replacement — Engineered to replace the factory upper boom section on Z-30/20N and Z-30/20N RJ machines, aligning with existing pivot points, pin locations, and hydraulic routing.
- Verified Z-30/20N Fitment — Confirmed compatibility with the Z-30/20N and Z-30/20N RJ articulating boom lifts — always verify by serial number using your Genie parts manual.
- Full Reach Restoration — A failed or damaged upper boom section limits platform positioning and can take a machine out of service entirely; this assembly restores the full range of articulation and outreach the Z-30/20N is rated for.
- Structural Safety Integrity — As a primary load-bearing structural component of an aerial work platform, the upper boom assembly directly affects platform stability and operator safety at height — using a genuine OEM replacement is critical.
The upper section boom assembly forms the outermost structural arm of the Z-30/20N articulating boom lift, connecting to the mid-boom and supporting the platform and jib at the working end of the machine. It works in conjunction with the lift cylinders and pivot joints to position the platform precisely at height and reach. When this assembly is cracked, bent, or otherwise compromised, the machine loses the structural integrity needed to safely elevate and support an operator, making prompt replacement with the correct OEM part essential to returning the unit to safe, full-function operation.
Part Details
| Part Number | 128039GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Upper Section Boom Assembly, Z-30/20N RJ |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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.
