The Genie 75321GT Thermostat Screw is a genuine OEM fastener designed for Perkins 1004-42 engines fitted to Genie S-series telescopic boom lifts and GTH-series telehandlers. As a direct OEM replacement, this screw matches the original specification for thread form, head profile, and material grade — ensuring a correct, secure installation. Compatible machines include the S-100, S-105, S-120, S-125, GTH-636, GTH-644, GTH-842, GTH-844, GTH-1048, and GTH-1056. Cross-reference part number 75321GT against your machine's parts manual to confirm this is the correct fastener for your unit before ordering.
Key Features
- Genuine OEM Material Grade — Manufactured to Genie's original specification for thread form, head geometry, and fastener grade, ensuring dimensional conformity with the Perkins 1004-42 engine thermostat housing.
- Direct-Fit Replacement — Installs in place of the original hardware with no rework needed, maintaining correct torque retention at the thermostat housing joint.
- Broad Genie Compatibility — Fits Perkins 1004-42 equipped S-series telescopic boom lifts and GTH-series telehandlers, covering a wide range of Genie equipment in a single part number.
- Thermostat Housing Integrity — A correctly torqued thermostat screw holds the thermostat housing securely in place. A stripped, corroded, or damaged fastener can allow the housing to weep or lose its seal, leading to engine temperature issues and unplanned downtime.
- Verified OEM Sourcing — Supplied by DHS Equipment as a genuine Genie part, giving you full confidence in part provenance and traceability for fleet maintenance records.
The thermostat screw secures the thermostat housing on the Perkins 1004-42 engine, keeping the thermostat correctly seated so the engine's cooling circuit can regulate operating temperature as designed. When this fastener is damaged, corroded, or over-torqued beyond recovery, the housing joint may not seat properly, which can allow fluid to escape and disrupt temperature regulation. Replacing a worn or failed screw with the correct OEM part restores a sound, leak-free joint and keeps the engine running within its intended temperature range.
Part Details
| Part Number | 75321GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Thermostat Screw, Perkins 1004-42 |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-120 | S-120 |
| S-125 | S-125 |
| S-100 | S-100 |
| S-105 | S-105 |
| GTH-1048 | GTH-1048 |
| GTH-1056 | GTH-1056 |
| GTH-644 | GTH-644 |
| GTH-844 | GTH-844 |
| GTH-842 | GTH-842 |
| GTH-636 | GTH-636 |
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.
