The Genie 639781GT is a genuine OEM O-Ring built for Genie GTH series telehandlers. As a direct OEM replacement, this part is manufactured to the same standards as the original, ensuring a correct, consistent fit across compatible units. It is confirmed to fit models including the GTH-3007, GTH-3007 AU.2, GTH-3007 AU-AG, GTH-3007 FMS, GTH-3007 ACF, GTH-3512 ACF, and GTH-3713 AU — cross-reference part number 639781GT against your machine's parts manual to verify the correct application for your unit.
Key Features
- Genuine OEM Material Grade — manufactured to OEM dimensional and material specifications, ensuring the correct cross-section and compound for a consistent seal.
- Direct OEM Replacement — this O-Ring installs in place of the original without rework or modification, restoring the sealing surface as intended.
- Broad GTH Telehandler Fitment — fits multiple GTH-3007 and GTH-3512 variants, including AU, AU-AG, FMS, and ACF configurations, as well as the GTH-3713 AU.
- Prevents Fluid Loss — a sound O-Ring maintains a leak-free joint; a worn or damaged one allows fluid to escape, leading to pressure loss and component wear.
- Operational Safety — maintaining proper sealing integrity on a telehandler is essential for safe, controlled operation; replace a deteriorated O-Ring promptly to avoid unplanned fluid loss.
An O-Ring is a circular elastomeric seal seated in a groove between two mating surfaces or around a fitting, creating a reliable barrier that prevents fluid from escaping the joint. When an O-Ring becomes cracked, flattened, or chemically degraded, the seal is compromised and fluid begins to weep or leak from the connection it was protecting. Replacing a worn O-Ring promptly with the correct OEM part restores sealing performance and prevents further damage to surrounding components on the machine.
Part Details
| Part Number | 639781GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Models |
|---|---|
| GTH-3007 | GTH-3007 |
| GTH-3007 ACF | GTH-3007 ACF |
| GTH-3007 AU-AG | GTH-3007 AU-AG |
| GTH-3007 AU.2 | GTH-3007 AU.2 |
| GTH-3007 FMS | GTH-3007 FMS |
| GTH-3512 ACF | GTH-3512 ACF |
| GTH-3713 AU | GTH-3713 AU |
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.
