The Multiquip EM98045 Hydraulic Cylinder ST45 70 is a genuine OEM replacement designed for ST45 series swing-tube concrete pumps. Sourced directly through Multiquip's authorized parts program, this cylinder meets the original engineering specifications required to keep your pump operating at full hydraulic capacity. Confirmed fitment for the ST45 concrete pump makes parts lookup and ordering straightforward, so you can get your equipment back on the pour faster.
Key Features
- Genuine OEM Construction — Manufactured to the same hydraulic pressure tolerances and dimensional specs as the original cylinder, ensuring consistent stroke force and seal integrity under demanding pumping cycles.
- Direct-Swap Replacement — Matches the original mounting points, port locations, and stroke length of the ST45 platform, allowing the cylinder to drop in without reworking hydraulic lines or brackets.
- Confirmed ST45 Fitment — Verified for use on the Multiquip ST45 swing-tube concrete pump series, so you can order with confidence.
- Sustained Pumping Output — A correctly functioning hydraulic cylinder delivers consistent concrete displacement per stroke; a worn or leaking cylinder causes pressure loss, uneven output, and potential pump shutdown on the job.
- Hydraulic System Safety — A compromised cylinder can develop internal or external leaks under high operating pressure, creating a fluid-injection hazard and loss of pump control — using an OEM-spec replacement maintains safe system pressure boundaries.
The hydraulic cylinder is the core actuator in a swing-tube concrete pump's pumping circuit. It converts hydraulic pressure generated by the pump's power unit into the linear force needed to push concrete through the delivery line, driving the pistons back and forth in a timed sequence. When this cylinder develops internal bypass leakage or seal failure, stroke force drops, output volume becomes inconsistent, and in severe cases the pump will lose the ability to prime or sustain pressure — requiring an immediate cylinder replacement to restore reliable operation.
Part Details
| Part Number | EM98045 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hydraulic Cylinder ST45 70 |
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.
