The Multiquip EM97026 Pump Piston ST40 is a genuine OEM component designed for the ST40 swing tube concrete pump. As a factory-sourced part, EM97026 meets the original engineering specifications of the ST40, ensuring a direct, dependable installation with no guesswork on fit or function. Sourced directly through Multiquip's authorized parts network, this piston is built to handle the demanding pressures and abrasive conditions inherent to concrete pumping operations.
Key Features
- Genuine OEM Material Grade — Manufactured to the exact hardness and wear-resistance specifications required for a concrete pump piston operating under high-cycle, high-pressure conditions.
- Direct Installation Fit — Engineered to match the bore dimensions and sealing surfaces of the ST40 pump cylinder, dropping into place without machining or alteration.
- Confirmed ST40 Fitment — Verified compatibility with the Multiquip ST40 swing tube concrete pump series.
- Sustained Pumping Consistency — A correctly seated piston maintains full volumetric displacement, preserving steady concrete flow rate and output pressure throughout the pour.
- Pressure-System Integrity — A worn or failed piston allows concrete slurry to bypass the sealing surface, creating backflow and pressure loss that can result in pump damage — replacing with a properly rated OEM piston protects the entire pumping circuit.
The pump piston is the primary displacement component inside the concrete pump cylinder. On each stroke, it compresses and forces concrete mix through the delivery line — making its dimensional integrity and surface condition directly responsible for the pump's output consistency and pressure. When a piston wears down or develops surface scoring, concrete can slip past the seal, causing pressure drop, uneven flow, and accelerated damage to the cylinder wall. Replacing the piston at the first sign of wear keeps the ST40 operating at full rated capacity and protects the surrounding pump components from compounding damage.
For fitment questions or to confirm this part is correct for your ST40, contact the DHS Equipment parts team before ordering.
Part Details
| Part Number | EM97026 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pump Piston ST40 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST40 | ST40 |
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.
