The Genie 21148GT is a genuine OEM Thrust Washer for Torque Hub applications, designed for a broad range of Genie telescopic boom lifts, articulating boom lifts, and large-platform scissor lifts. As a direct OEM replacement, this washer is manufactured to the exact tolerances required by the torque hub assembly — ensuring correct axial load distribution and consistent hub performance across every compatible unit. This part fits Genie S-series telescopic booms including the S-40, S-45, S-80, and S-85; Z-series articulating booms including the Z-30/20, Z-34/22, Z-45/25, Z-45/25J, Z-51/30J, Z-80/60, and Z-135/70 across multiple power variants; and GS large-platform scissor lifts including the GS-3390, GS-4390, and GS-5390. Cross-reference part number 21148GT against your Genie parts manual to confirm fitment for your specific model and serial range before ordering.
Key Features
- Genuine OEM Tolerancing — Manufactured to exact axial load and thickness specifications required by the Genie torque hub assembly, ensuring the washer seats and functions as the original did.
- Drop-In Hub Replacement — This washer installs directly within the torque hub stack without modification, maintaining correct bearing preload and component alignment.
- Wide Genie Fleet Coverage — Fits Genie S and Z series boom lifts and GS large-platform scissor lifts, making it a practical stock item for mixed Genie fleets.
- Preserves Drive System Integrity — A correctly functioning thrust washer controls axial play in the torque hub; wear or failure can cause hub noise, uneven drive force, and accelerated bearing deterioration.
- Critical Safety-Relevant Component — The torque hub transmits drive force to the wheels on aerial lifts operating at height; maintaining the integrity of every hub component, including this washer, is essential to safe machine travel and positioning.
A thrust washer is a precision disc positioned within a torque hub assembly to absorb and manage axial (side-to-side) loads between rotating components. In a drive hub on a boom lift or scissor lift, it sits between rotating and stationary faces to reduce friction, control end-play, and prevent metal-to-metal contact that would otherwise wear down surrounding bearings and gears. When this washer wears thin, becomes scored, or is missing entirely, the torque hub loses proper preload — leading to excessive play, vibration during travel, and potentially rapid deterioration of the surrounding hub components. Replacing it at the first sign of wear is one of the most cost-effective ways to extend the service life of the entire drive assembly.
Part Details
| Part Number | 21148GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Thrust Washer, Torque Hub |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-40 | S-40 |
| S-45 | S-45 |
| S-80 | S-80 |
| S-85 | S-85 |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| Z-34/22 N | Z-34/22 N |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-135/70 | Z-135/70 |
| Z-51/30J | Z-51/30J |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-45/25 IC | Z-45/25 IC |
| Z-45/25J IC | Z-45/25J IC |
| Z-30/20 N | Z-30/20 N |
| Z-45/22 | Z-45/22 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-34 IC | Z-34 IC |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-80/60 | Z-80/60 |
| Z-30/20 | Z-30/20 |
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.
