The Genie 75645GT is a genuine OEM Hydraulic Tank, 55 Gallon designed for Genie S series telescopic boom lifts. Sourced directly from Genie, this tank is manufactured to the same standards as the original component installed at the factory. This part fits a range of large-frame S series models, including the S-100, S-100HD, S-105, S-120, S-120HD, S-125, S-3200, and S-3800 — cross-reference part number 75645GT against your machine's parts manual to confirm it is the correct item for your specific unit before ordering.
Key Features
- Genuine OEM Construction — Built to original Genie specifications, ensuring correct material grade, wall thickness, and sealing surface dimensions for a dependable replacement.
- Correct 55-Gallon Capacity — Matches the original reservoir volume exactly, maintaining proper hydraulic fluid levels required for full boom function on large-frame S series machines.
- Direct-Fit Replacement — Designed to mount in the same location as the original tank, with ports, fittings, and brackets positioned to align with existing connections and hardware.
- Broad S Series Coverage — Fits multiple large-platform Genie S series telescopic boom lift models, including HD and standard variants, consolidating a single part across a fleet.
- Hydraulic System Integrity — A sound reservoir keeps the hydraulic fluid clean, properly filled, and free of air entrainment — conditions essential for consistent boom extension, lift speed, and overall machine response.
The hydraulic tank serves as the central reservoir for hydraulic fluid on the machine. It stores fluid at low pressure, allows heat to dissipate, and provides a settling point where air and contaminants can separate from the fluid before it is drawn into the circuit. On large telescopic boom lifts like the S series models this tank is designed for, a properly functioning reservoir is essential — a cracked, leaking, or corroded tank drops fluid levels, introduces air into the system, and can cause sluggish or erratic boom movement. Replacing a damaged tank with a genuine Genie part restores the correct fluid volume and ensures all ports, fittings, and mounting points align with the original installation.
Part Details
| Part Number | 75645GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Hydraulic Tank, 55 Gallon |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-100HD | S-100HD |
| S-120HD | S-120HD |
| S-3800 | S-3800 |
| S-3200 | S-3200 |
| S-120 | S-120 |
| S-125 | S-125 |
| S-100 | S-100 |
| S-105 | S-105 |
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.
