The Genie 139517GT is a genuine OEM Manifold 139391GT Valve Seal Kit designed for Genie Z-series articulating boom lifts, including the Z-51/30J, Z-45/25, Z-45/25J IC Power, Z-45/25 IC, and Z-45/25J IC. This kit is the correct OEM service solution for manifold 139391GT, applicable from serial number Z452510A-39751 and from serial number Z452511B-1607. As a genuine Genie part, it is manufactured to the exact specifications required for proper valve sealing on the manifold it services. Cross-reference part number 139517GT against your machine's parts manual to confirm this kit is correct for your serial range before ordering.
Key Features
- Genuine OEM Sealing Materials — Manufactured to Genie's material grade and dimensional specifications, ensuring correct compression and seating against the valve surfaces of manifold 139391GT.
- Manifold-Specific Application — Engineered exclusively for manifold 139391GT, so every seal in this kit corresponds directly to a valve port or sealing surface on that assembly.
- Serial-Number-Scoped Fitment — Confirmed for machines from SN Z452510A-39751 and from SN Z452511B-1607, covering the correct production range of Z-45/25 and Z-51/30J articulating booms.
- Restores Valve Integrity — A worn or deteriorated valve seal allows fluid to bypass or leak past the valve, causing erratic or sluggish boom response. Replacing with this kit restores proper valve function and consistent machine control.
- Operational Safety — Valve seals are critical to controlled boom movement on aerial lifts. A failed seal can result in unintended boom drift or loss of position, making timely replacement with the correct OEM kit an important safety measure.
The valve seal kit services the seals within the valve assembly mounted on manifold 139391GT. Valve seals maintain the boundary between fluid circuits within the manifold, allowing the valve to open, close, and meter flow as commanded. When these seals wear, crack, or take a set, fluid can bypass the valve seat, leading to leakage, reduced control responsiveness, or boom drift — all conditions that compromise the safe operation of an articulating boom lift. Installing this kit at the intervals your service manual specifies keeps the valve assembly functioning as designed and the boom responding predictably to operator inputs.
Part Details
| Part Number | 139517GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Manifold 139391GT Valve Seal Kit |
Compatibility & Fitment
| Name | Model |
|---|---|
| Z-51/30J | Z-51/30J |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-45/25 IC | Z-45/25 IC |
| Z-45/25J IC | Z-45/25J IC |
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.
