The Genie 1251731GT is a genuine OEM Expansion Tank Hose, D2.9 built for Genie S-series telescopic boom lifts, GS-series scissor lifts, and Z-series articulating boom lifts. As a factory-authorized Genie part, this hose is manufactured to the exact specifications required for the engine cooling circuit it serves, ensuring a correct, confident fit on every covered machine. Compatible models include the S-40, S-45, S-60, S-65, S-60 XC, S-60 HC, S-60 HF, S-60 TRAX, S-65 XC, S-65 HF, S-65 TRAX, S-60X, GS-3384, GS-3390, GS-4390, GS-5390, Z-62/40, Z-45/25, and Z-45/25J IC Power. Cross-reference part number 1251731GT against your machine's parts manual before ordering to confirm this is the correct hose for your specific unit and serial range.
Key Features
- Genuine OEM Construction — Made to Genie's original material and dimensional specifications for the D2.9 engine application, delivering the same hose you'd get from the factory.
- Direct-Fit Replacement — Engineered to match the original routing, end fittings, and diameter, so this hose connects cleanly without cutting or adapting lines.
- Broad Model Coverage — Fits a wide range of Genie S-series telescopic booms, GS-series scissor lifts, and Z-series articulating booms, including XC, HC, HF, and TRAX variants.
- Maintains Fluid Integrity — A sound expansion tank hose keeps coolant routed correctly between the engine and the expansion tank; a cracked or collapsed hose causes fluid loss and can lead to overheating and unplanned downtime.
- OEM Part Number Assurance — Ordering by confirmed Genie part number 1251731GT means you receive the correct hose for your machine rather than a generic substitute that may not match in length, diameter, or end configuration.
The expansion tank hose connects the engine's cooling system to the coolant expansion tank, allowing fluid to move between the two as the engine heats up and cools down. This controlled movement keeps the cooling circuit at the correct pressure and prevents air pockets from forming in the system. When this hose cracks, collapses, or leaks at its connections, coolant is lost, the engine is at risk of overheating, and the machine may shut down to protect itself — making prompt replacement with the correct OEM part essential to keeping the equipment operating safely.
Part Details
| Part Number | 1251731GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Expansion Tank Hose, D2.9 |
Compatibility & Fitment
| Name | Models |
|---|---|
| GS-3384 | GS-3384 |
| GS-3390 | GS-3390 |
| GS-4390 | GS-4390 |
| GS-5390 | GS-5390 |
| S-40 | S-40 |
| S-45 | S-45 |
| S-60 | S-60 |
| S-60 HC | S-60 HC |
| S-60 HF | S-60 HF |
| S-60 TRAX | S-60 TRAX |
| S-60 XC | S-60 XC |
| S-60X | S-60X |
| S-65 | S-65 |
| S-65 HF | S-65 HF |
| S-65 TRAX | S-65 TRAX |
| S-65 XC | S-65 XC |
| Z-45/25 | Z-45/25 |
| Z-45/25J IC Power | Z-45/25J IC Power |
| Z-62/40 | Z-62/40 |
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.
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