The Multiquip EM450X256 Block Solenoid ST45 is a genuine OEM solenoid designed for the ST45 swing tube concrete pump. As an authorized OEM component, EM450X256 is built to the exact electrical and mechanical specifications required by the ST45, ensuring correct valve actuation and hydraulic control without improvisation or adaptation. DHS Equipment supplies this part direct, so you can order with confidence that you're receiving the correct solenoid for your machine.
Key Features
- OEM Electrical Specification Match — Wound to the correct resistance and voltage rating for the ST45 hydraulic control circuit, ensuring consistent solenoid engagement under working pressure.
- Direct Bolt-On Replacement — Matches the original mounting configuration and port interface on the ST45 valve block, so installation follows the same procedure as the factory unit.
- Confirmed ST45 Fitment — Engineered specifically for the ST45 swing tube concrete pump; model code confirmed against Multiquip OEM parts documentation.
- Consistent Valve Actuation — A correctly functioning solenoid maintains precise, repeatable control of concrete flow direction; a failed or weak solenoid causes erratic pumping cycles or complete loss of directional control.
- Genuine Multiquip OEM Quality — Sourced directly from Multiquip, this component meets the same production standards as the original part installed at the factory, protecting the integrity of the hydraulic system.
The block solenoid on the ST45 concrete pump is an electro-hydraulic control component that governs the directional valve responsible for switching concrete flow through the swing tube circuit. When energized, the solenoid shifts the valve spool, directing hydraulic pressure to move the swing tube into position for each stroke of the pumping cycle. If the solenoid coil burns out, shorts, or loses the ability to generate sufficient magnetic force, the valve fails to shift reliably — resulting in misfires, incomplete strokes, or a pump that stops cycling altogether. Keeping this component in good working order is essential to maintaining consistent output and avoiding unplanned interruptions during a pour.
Part Details
| Part Number | EM450X256 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Block Solenoid ST45 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST45 | ST45 |
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.
