The Genie 77309GT is a genuine OEM Bulkhead Nut, 520118-8, built for Genie SX telescopic boom lifts, Z articulating boom lifts, and GTH telehandlers. As a direct OEM replacement, this nut is manufactured to the exact specification Genie requires, ensuring a correct, consistent fit on the machines it was designed for. Confirmed fitment includes models such as the SX-150, SX-180, SX-135 XC, Z-45/25, Z-45/25J IC Power, Z-45 XC, Z-51/30J, GTH-636, GTH-844, GTH-1044, GTH-1244, GTH-1544, and related variants — cross-reference part number 77309GT against your machine's parts manual to confirm the correct application for your unit.
Key Features
- Genuine OEM Construction — Manufactured to Genie's exact dimensional and material standards, so the nut seats and torques correctly without rework or shimming.
- Exact-Fit Bulkhead Replacement — Designed as a direct drop-in for the bulkhead position it occupies, maintaining proper panel or housing integrity wherever it installs.
- Broad Genie Fitment — Covers a wide range of Genie SX telescopic booms, Z articulating booms, and GTH telehandlers across multiple model variants; always confirm with your parts manual.
- Secure Fastening — A sound bulkhead nut holds fittings and lines firmly in place at panel pass-throughs; a loose or damaged one allows movement that can cause leaks or line wear over time.
- Sourced from DHS Equipment — Ordered as a genuine Genie part, providing confidence that the specification, size callout 520118-8, and suffix match what the machine requires.
A bulkhead nut is a threaded fastener used to secure a fitting or line at a panel, bulkhead, or housing wall, clamping it firmly in place so it cannot shift or vibrate loose during operation. When this nut is missing, loose, or damaged, the fitting it retains can move under load or vibration, creating a point of wear or fluid loss that is difficult to trace until the problem worsens. Replacing a worn or stripped bulkhead nut with the correct OEM part restores the clamping force and thread engagement the original design depends on — confirm part number 77309GT against your machine's parts manual before ordering to be certain this is the right nut for your application.
Part Details
| Part Number | 77309GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Bulkhead Nut, 520118-8 |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-636 | GTH-636 |
| GTH-844 | GTH-844 |
| GTH-1044 | GTH-1044 |
| GTH-1244 | GTH-1244 |
| GTH-1544 | GTH-1544 |
| SX-135 XC | SX-135 XC |
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| Z-45 XC | Z-45 XC |
| Z-45/22 | Z-45/22 |
| Z-45/25 | Z-45/25 |
| Z-45/25 IC | Z-45/25 IC |
| Z-45/25J IC | Z-45/25J IC |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-51/30J | Z-51/30J |
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.
