The Genie 1257249GT is a genuine OEM Lock Washer, M4, SS designed for Genie S series telescopic boom lifts and Z and ZX series articulating boom lifts. As a factory-sourced component, this stainless steel lock washer matches the original hardware specification, ensuring a correct, secure installation without the guesswork of cross-referencing aftermarket alternatives. This part covers a wide range of Genie boom lift models, including the S-40, S-45, Z-45/25J Bi-Energy, Z-60/37 FE Hybrid, Z-80/60, Z-135/70, and ZX-135/70, among others. Cross-reference part number 1257249GT against your Genie parts manual to confirm fitment for your specific machine before ordering.
Key Features
- Stainless Steel Construction — Manufactured in stainless steel (SS) for corrosion resistance, holding up to the moisture and outdoor conditions common on aerial lift jobsites.
- Genuine OEM Hardware — Sourced directly from Genie, this lock washer meets the same torque-retention and dimensional standards as the original fastener it replaces.
- M4 Sizing for Direct Installation — The M4 thread size matches the original bolt specification exactly, so this washer seats and locks without rework or shimming.
- Broad Boom Lift Compatibility — Fits a wide range of Genie S series telescopic and Z and ZX series articulating boom lifts, including IC Power, DC, FE Hybrid, Bi-Energy, and RJ variants.
- Fastener Integrity Where It Counts — On aerial lift equipment, a lock washer that loses its grip can allow critical fasteners to back out under vibration, compromising structural connections and operational safety.
A lock washer is a hardened fastening component installed beneath a nut or bolt head to resist loosening caused by vibration, load cycling, and thermal expansion and contraction. On boom lifts, which experience continuous movement, oscillation, and dynamic loading during operation, lock washers play a key role in keeping structural and mechanical fasteners secured to their specified torque. When a lock washer fails, deforms, or is omitted, the fastener it supports can gradually back out, leading to loose connections in critical assemblies that may go undetected until a more serious failure occurs. Replacing worn or damaged lock washers with the correct genuine OEM hardware is a straightforward but important step in maintaining the mechanical integrity of the machine.
Part Details
| Part Number | 1257249GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Lock Washer, M4, SS |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| Z-135/70 | Z-135/70 |
| Z-51/30J | Z-51/30J |
| Z-62/40 | Z-62/40 |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-45/25 | Z-45/25 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-80/60 | Z-80/60 |
| Z-60/37 DC | Z-60/37 DC |
| Z-60/37 FE Hybrid | Z-60/37 FE Hybrid |
| Z-45/25 IC | Z-45/25 IC |
| Z-60 DC | Z-60 DC |
| Z-60 FE Hybrid | Z-60 FE Hybrid |
| Z-45 FE Hybrid | Z-45 FE Hybrid |
| Z-45 DC | Z-45 DC |
| Z-60 FE | Z-60 FE |
| ZX-135/70 | ZX-135/70 |
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.
