The Genie 1257390GT is a genuine OEM Flat Washer, #8, SAE, ZAG designed for a wide range of Genie aerial lifts and telehandlers. As a direct OEM replacement, this washer is produced to the same standards as the original hardware installed at the factory, ensuring correct load distribution and fastener performance across all compatible machines. This part fits an extensive range of equipment including Genie GS scissor lifts, S and SX series telescopic boom lifts, Z and ZX series articulating boom lifts, and GTH telehandlers. Cross-reference part number 1257390GT against your parts manual to confirm the correct application before ordering.
Key Features
- Genuine OEM Hardware Grade — Manufactured to Genie's original material and dimensional specification for a #8 SAE zinc-and-gold (ZAG) flat washer, delivering the correct hardness and corrosion resistance for the application.
- Drop-In Replacement — Matches the original washer's bore, outer diameter, and thickness so it seats correctly against the fastener and mating surface without rework.
- Broad Equipment Compatibility — Fits Genie GS scissor lifts, S and SX telescopic boom lifts, Z and ZX articulating boom lifts, GTH telehandlers, and select RL light towers, covering a wide fleet with a single part.
- Corrosion-Resistant ZAG Finish — The zinc-and-gold finish guards against rust and oxidation, extending service life in outdoor and harsh-environment applications where washers are exposed to moisture and debris.
- Proper Load Distribution — A correctly sized and rated washer spreads clamp load evenly across the joint surface, preventing fastener pull-through, surface damage, and loosening under vibration — all common failure points when incorrect hardware is substituted.
A flat washer serves as a load-spreading interface between a fastener head or nut and the surface it clamps. By distributing the clamping force over a wider area, it prevents the fastener from pulling through or damaging softer materials and helps maintain consistent joint tension over time. When a washer is missing, wrong-sized, or corroded through, fastener joints can work loose under the vibration and dynamic loads typical of aerial lift and telehandler operation, leading to mechanical play, component wear, and potential hardware failures that interrupt service.
Part Details
| Part Number | 1257390GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Flat Washer, #8, SAE, ZAG |
Compatibility & Fitment
| Name | Model |
|---|---|
| RL4 LED Vertical Mast | RL4 LED Vertical Mast |
| S-60 XC | S-60 XC |
| S-65 XC | S-65 XC |
| S-60 HF | S-60 HF |
| S-65 HF | S-65 HF |
| SX-135 XC | SX-135 XC |
| S-80 XC | S-80 XC |
| S-85 XC | S-85 XC |
| S-80 HF | S-80 HF |
| S-85 HF | S-85 HF |
| S-60 | S-60 |
| S-65 | S-65 |
| S-60X | S-60X |
| S-65 TRAX | S-65 TRAX |
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
| S-80X | S-80X |
| S-80 | S-80 |
| S-85 | S-85 |
| S-40 XC | S-40 XC |
| S-45 XC | S-45 XC |
| S-40 TRAX | S-40 TRAX |
| S-45 TRAX | S-45 TRAX |
| S-40 HF | S-40 HF |
| S-45 HF | S-45 HF |
| S-60 J | S-60 J |
| S-80 J | S-80 J |
| S-60 FE Hybrid | S-60 FE Hybrid |
| S-60 DC | S-60 DC |
| S-60 FE | S-60 FE |
| S-85 XC FE | S-85 XC FE |
| S-85 XC E | S-85 XC E |
| GS-2669BE | GS-2669BE |
| GS-3369BE | GS-3369BE |
| GS-4069BE | GS-4069BE |
| GS-1530 | GS-1530 |
| GS-1532 | GS-1532 |
| GS-1930 | GS-1930 |
| GS-1932 | GS-1932 |
| GS-3384 | GS-3384 |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| GS-2669RT | GS-2669RT |
| GS-3369RT | GS-3369RT |
| GS-4069RT | GS-4069RT |
| GS-1330m | GS-1330m |
| GS-4655 | GS-4655 |
| GS-2046 | GS-2046 |
| GS-2646 | GS-2646 |
| GS-3246 | GS-3246 |
| GS-4046 | GS-4046 |
| GS-2032 | GS-2032 |
| GS-2632 | GS-2632 |
| GS-3232 | GS-3232 |
| GS-1332m | GS-1332m |
| GS-1432m | GS-1432m |
| GS-1932m | GS-1932m |
| GS-2669DC | GS-2669DC |
| GS-3369DC | GS-3369DC |
| GS-4069DC | GS-4069DC |
| GTH-844 | GTH-844 |
| GTH-636 | GTH-636 |
| GTH-1056 | GTH-1056 |
| GTH-1256 | GTH-1256 |
| GTH-1044 | GTH-1044 |
| GTH-1244 | GTH-1244 |
| GTH-1544 | GTH-1544 |
| TZ-50/30 | TZ-50/30 |
| Z-51/30J | Z-51/30J |
| Z33/18 | Z33/18 |
| 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 |
| ZX-135/70 | ZX-135/70 |
| Z-80/60 | Z-80/60 |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 N | Z-34/22 N |
| Z-45 XC | Z-45 XC |
| Z-34/22 IC | Z-34/22 IC |
| 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-33 DC Power | Z-33 DC Power |
| Z-45 FE Hybrid | Z-45 FE Hybrid |
| Z-45 DC | Z-45 DC |
| Z-60 FE | Z-60 FE |
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.
