The Genie 59445GT is a genuine OEM Seal Kit, 3" Bore, 1.5" Rod designed for the S-45 telescopic boom lift and Z-45/25 series articulating boom lifts, including the Z-45/25J IC Power, Z-45/25J DC, and Z-45/25J Bi-Energy variants. As a factory-sourced replacement, this seal kit delivers the correct materials, dimensions, and compression characteristics required for a proper cylinder reseal. Cross-reference part number 59445GT against your machine's parts manual to confirm it matches your specific unit before ordering.
Key Features
- Genuine OEM Sealing Materials — Manufactured to Genie's original specifications, this kit uses the correct seal compounds and dimensional tolerances for a 3" bore and 1.5" rod cylinder reseal.
- Direct Cylinder Fit — Sized precisely for a 3" bore and 1.5" rod cylinder, this kit installs without modification and restores the cylinder to proper operating condition.
- Broad Model Coverage — Compatible with the S-45 telescopic boom and Z-45/25 articulating boom family, including IC Power, DC, and Bi-Energy variants.
- Restores Cylinder Integrity — Worn or damaged seals allow fluid to bypass the piston or weep externally, causing loss of cylinder holding force and erratic boom movement. Replacing seals with the correct OEM kit restores full cylinder performance.
- Aerial Lift Safety — On boom lifts, a cylinder that cannot hold position under load is a direct safety concern. Using the correct OEM seal kit ensures the cylinder meets the holding and actuation requirements of the machine.
A seal kit contains the full set of seals, o-rings, wipers, and related components needed to rebuild a cylinder back to its original operating condition. In a boom lift cylinder, seals prevent fluid from bypassing the piston and keep external leakage in check — both are essential for the cylinder to extend, retract, and hold position reliably. When seals wear or become damaged, the cylinder loses the ability to maintain pressure, which shows up as drift, sluggish movement, or visible fluid leakage at the rod. Replacing the complete seal set with a genuine OEM kit restores proper cylinder function and keeps the boom operating as intended.
Part Details
| Part Number | 59445GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Seal Kit, 3" Bore, 1.5" Rod |
Compatibility & Fitment
| Name | Models |
|---|---|
| S-45 | S-45 |
| Z-45/25 | Z-45/25 |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J IC Power | Z-45/25J IC Power |
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.
