The Genie 21858GT is a genuine OEM Black Domed Nylon Plug,.38 built for a wide range of Genie aerial equipment, including S and SX telescopic boom lifts, Z and ZX articulating boom lifts, GS scissor lifts, TZ trailer-mounted booms, and select Genie light towers and personnel lifts. As a factory-sourced part, it matches the original specification for material grade, diameter, and profile. Cross-reference part number 21858GT against your machine's parts manual to confirm it is the correct plug for your unit before ordering.
Key Features
- Genuine OEM Material Grade — Nylon construction meets the original dimensional and material specification, ensuring the plug seats correctly and holds its domed profile over time.
- Exact-Fit Replacement — The .38 diameter matches the original port or hole size, so this plug drops in without modification or re-drilling.
- Broad Genie Fitment — Compatible with S, SX, Z, ZX, and TZ boom lifts, GS scissor lifts, TML light towers, and AWP Super Series personnel lifts, making it a practical part to have on hand across a mixed Genie fleet.
- Protects Openings from Contamination — A properly seated plug keeps dust, debris, and moisture out of unused ports or panel openings, helping maintain the condition of surrounding components.
- Low-Profile Domed Design — The domed cap sits flush or proud of the surface without snagging on adjacent components, matching the original appearance and function of the factory-installed plug.
A nylon plug is used to seal unused holes, ports, or panel openings on the machine's structure or enclosures. It prevents contamination from entering areas that are not in active use, protecting adjacent hardware and keeping the assembly clean. When a plug is missing, cracked, or no longer seated firmly, the opening is left exposed to dust, moisture, and debris — replacing it promptly with the correct OEM part restores the original level of protection.
Part Details
| Part Number | 21858GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Black Domed Nylon Plug, .38 |
Compatibility & Fitment
| Name | Model |
|---|---|
| TML-4000 | TML-4000 |
| TML-4000N | TML-4000N |
| AWP Super Series | AWP Super Series |
| S-80X | S-80X |
| S-80 | S-80 |
| S-85 | S-85 |
| S-60 | S-60 |
| S-65 | S-65 |
| S-60X | S-60X |
| S-60 XC | S-60 XC |
| S-60 HC | S-60 HC |
| S-60 TRAX | S-60 TRAX |
| S-65 TRAX | S-65 TRAX |
| SX-150 | SX-150 |
| SX-180 | SX-180 |
| SX-135 XC | SX-135 XC |
| S-40 | S-40 |
| S-45 | S-45 |
| SX-105 XC | SX-105 XC |
| SX-125 XC | SX-125 XC |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| GS-3384 | GS-3384 |
| TZ-34/20 | TZ-34/20 |
| TZ-50/30 | TZ-50/30 |
| TZ-50 | TZ-50 |
| 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-45/25 | Z-45/25 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-30/20 N | Z-30/20 N |
| Z-30/20N RJ | Z-30/20N RJ |
| Z-40/23N | Z-40/23N |
| Z-40/23N RJ | Z-40/23N RJ |
| ZX-135/70 | ZX-135/70 |
| Z-34 IC | Z-34 IC |
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.
