The Genie 102578GT is a genuine OEM Pressure Regulating Valve designed for Genie S-100, S-105, S-120, and S-125 telescopic boom lifts equipped with the Cummins B4.5 engine. As a factory-sourced component, this valve meets the exact specifications set by Genie for safe and consistent engine fuel system performance on these large-platform booms. Cross-reference part number 102578GT against your parts manual to confirm fitment for your specific machine configuration before ordering.
Key Features
- Genuine OEM Fuel System Integrity — Sourced directly from Genie, this valve maintains the precise pressure regulation tolerances required by the Cummins B4.5 engine, ensuring the fuel system operates within its designed parameters.
- Direct OEM Replacement — This part is engineered to seat and connect exactly as the original, with no adaptation needed to fit the Cummins B4.5 fuel system on compatible S-series booms.
- Fits Large-Platform S-Series Telescopic Booms — Compatible with the Genie S-100, S-105, S-120, and S-125 telescopic boom lifts, covering some of the tallest machines in the Genie S-series lineup.
- Consistent Engine Power Delivery — A properly functioning pressure regulating valve keeps fuel pressure stable under varying load conditions, supporting smooth, responsive engine output during boom operation at height.
- Critical Safety-Adjacent Component — Stable fuel pressure is essential to maintaining engine reliability on large telescopic booms. A failing valve can cause erratic engine performance or shutdown at height, making prompt replacement with a correct OEM part essential.
A pressure regulating valve controls and maintains consistent fuel pressure within the engine's fuel system. On the Cummins B4.5 engine, it ensures that the fuel injectors receive fuel at the correct pressure regardless of engine speed or load — a function that directly affects engine responsiveness and reliability. When this valve wears or fails, symptoms can include unstable engine idle, loss of power, hard starting, or complete engine shutdown, any of which pose serious operational concerns on a large aerial boom lift.
Part Details
| Part Number | 102578GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Pressure Regulating Valve, Cummins B4.5 |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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.
