The Genie 18595GT is a genuine OEM Flat Washer, 1.78 x 2.50 x.057, designed for Genie GS scissor lifts and Z-45/25 articulating boom lifts. As a factory-sourced component, this washer meets the exact dimensional and material standards specified for these machines, ensuring a correct, consistent installation every time. Cross-reference part number 18595GT against your parts manual to confirm fitment before ordering. Compatible models include the GS-3390, GS-4390, GS-5390, GS-3384, Z-45/25, Z-45/25J IC Power, Z-45/25J DC, and Z-45/25J Bi-Energy.
Key Features
- Exact OEM Dimensions — Manufactured to the precise 1.78 x 2.50 x .057 specification, so load distribution and clamping force perform exactly as the machine was engineered to deliver.
- Genuine Genie Part — Sourced directly from Genie, this washer carries the same material grade and tolerance as the original hardware installed at the factory.
- Broad GS and Z-Boom Compatibility — Fits GS-series scissor lifts (GS-3390, GS-4390, GS-5390, GS-3384) and the Z-45/25 articulating boom family, including IC Power, DC, and Bi-Energy variants.
- Drop-In Installation — Sized to seat correctly in the original bolt pattern without reworking the joint, keeping your service time short and the assembly torqued to spec.
- Structural Joint Integrity — A correctly spec'd washer spreads clamp load evenly across the joint surface, preventing fastener pull-through and protecting structural components from wear over repeated load cycles.
- Safety-Critical Fastener Role — On aerial lifts, hardware that anchors structural and mechanical joints directly affects platform stability; using the correct OEM washer keeps the assembly within its rated design tolerances.
A flat washer serves as a load-distributing interface between a fastener and the surface it secures. By spreading the clamping force of a bolt or nut across a wider area, it prevents the fastener from pulling into or damaging the parent material and helps maintain consistent tension in the joint over time. When a washer is missing, incorrect in size, or worn thin, the fastener can work loose under vibration or load cycling — a particular concern on mobile aerial equipment that experiences constant movement and dynamic stress. Replacing a worn or missing washer with the correct OEM piece restores the joint to its original clamping specification and protects the surrounding components from progressive damage.
Part Details
| Part Number | 18595GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Flat Washer, 1.78 x 2.50 x .057 |
Compatibility & Fitment
| Name | Model |
|---|---|
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| GS-3384 | GS-3384 |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
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.
