The Genie 139421GT is a genuine OEM Water Pump for the Z482 T4 engine, designed for Genie Z-34/22 and Z-45/25 series articulating boom lifts. Sourced directly from Genie, this replacement component meets the same specifications as the original part installed at the factory. Compatible models include the Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-45/25, Z-45/25J DC, and Z-45/25J Bi-Energy — cross-reference part number 139421GT against your parts manual to confirm fitment for your specific unit. Keeping the engine cooling system in top condition is essential for safe, continuous operation of these articulating booms.
Key Features
- Genuine OEM Cooling Performance — Built to the exact flow rate and pressure specifications of the original Z482 T4 engine water pump, ensuring consistent coolant circulation without compromise.
- Direct Engine Mount Fit — Engineered to match the original mounting bolt pattern and inlet/outlet dimensions of the Z482 T4, allowing straightforward installation without modification.
- Broad Z-Series Articulating Boom Coverage — Fits the Z-34/22 N, Z-34/22 DC, Z-34/22 Bi-Energy, Z-45/25, Z-45/25J DC, and Z-45/25J Bi-Energy articulating boom lifts.
- Engine Temperature Stability — A properly functioning water pump maintains safe operating temperatures under sustained load — a worn or failing pump risks overheating, unplanned shutdowns, and potential engine damage.
- Operational Safety Assurance — Engine cooling integrity is directly tied to safe machine operation at height; replacing a failing pump promptly keeps the boom performing within its designed operating parameters.
The water pump circulates coolant through the engine block and radiator, drawing heat away from the Z482 T4 engine to maintain a safe operating temperature during continuous use. When the pump wears out — through impeller degradation, seal failure, or bearing wear — coolant flow drops, engine temperatures climb, and the machine is at risk of thermal shutdown or lasting engine damage. Replacing this component with the correct OEM part restores proper coolant circulation and protects the engine's long-term serviceability.
Part Details
| Part Number | 139421GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Water Pump, Z482 T4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Z-34/22 N | Z-34/22 N |
| Z-34/22 DC | Z-34/22 DC |
| Z-34/22 Bi-Energy | Z-34/22 Bi-Energy |
| Z-45/25 | Z-45/25 |
| Z-45/25J DC | Z-45/25J DC |
| Z-45/25J Bi-Energy | Z-45/25J Bi-Energy |
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.
