The Genie 639781GT O-Ring is a genuine OEM sealing component built for Genie GTH series telehandlers. Sourced directly from Genie, this O-Ring matches the exact material grade and dimensional profile of the original part, ensuring a proper seal without modification. Compatible with the GTH-3007, GTH-3007 AU.2, GTH-3007 AU-AG, GTH-3007 FMS, GTH-3007 ACF, GTH-3512 ACF, GTH-3512SX, GTH-4010SX, and GTH-3713 AU. Cross-reference part number 639781GT against your machine's parts manual to confirm this is the correct O-Ring for your application before ordering.
Key Features
- Genuine OEM Material Grade — Manufactured to the original compound and dimensional spec, so the seal compresses and seats correctly in its groove without improvisation.
- Direct Drop-In Replacement — Sized to fit the original bore and groove geometry, this O-Ring installs in place of the worn or damaged original with no rework required.
- Broad GTH Series Coverage — Fits multiple GTH telehandler variants, including AU, AU-AG, FMS, ACF, and SX configurations across the GTH-3007, GTH-3512, GTH-4010, and GTH-3713 families.
- Leak Prevention — A sound O-Ring maintains a fluid-tight seal at its connection point. A worn, cracked, or pinched O-Ring allows fluid to weep or escape, leading to loss of fluid and potential component damage.
An O-Ring is a continuous loop of elastomeric material seated in a machined groove. When assembled, it compresses slightly between two mating surfaces or around a shaft or port, creating a fluid-tight seal. Over time, heat cycling, pressure fluctuations, and material aging cause O-Rings to harden, crack, or deform, breaking the seal and allowing fluid to escape. Replacing a failed O-Ring promptly with the correct OEM part restores the integrity of the connection and prevents further fluid loss or component wear.
Part Details
| Part Number | 639781GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| GTH-3007 AU.2 | GTH-3007 AU.2 |
| GTH-3007 AU-AG | GTH-3007 AU-AG |
| GTH-3512SX | GTH-3512SX |
| GTH-4010SX | GTH-4010SX |
| GTH-3007 | GTH-3007 |
| GTH-3007 FMS | GTH-3007 FMS |
| GTH-3007 ACF | GTH-3007 ACF |
| 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.
