The Multiquip EM14904 Piston Cup Kits are a genuine OEM replacement designed for the C30HD-series concrete pumps, including the C30HD, C30HDZ, C30HDG, C30HDGA, C30HDN, C30HDNI, C30HDNI Precision, and C30HDNI Zenith models. These kits deliver the exact sealing geometry required to maintain pumping pressure and piston stroke consistency in demanding concrete placement applications. As a genuine OEM component, the part is built to the same specifications as the original parts installed at the factory, ensuring a direct, hassle-free installation. DHS Equipment supplies this kit ready to order, backed by verified fitment for the C30HD series.
Key Features
- OEM-Grade Cup Material — Manufactured to the same compound and durometer spec as the original piston cups, ensuring consistent compression and sealing performance under high-pressure concrete pumping cycles.
- Drop-In Kit Format — Includes the components needed to service the piston assembly, replacing worn cups without requiring custom machining or adapters.
- Broad C30HD Series Coverage — Confirmed fitment across C30HD, C30HDZ, C30HDG, C30HDGA, C30HDN, C30HDNI, C30HDNI Precision, and C30HDNI Zenith concrete pump models.
- Sustained Output Pressure — Properly sealed piston cups maintain the pumping force needed to move concrete consistently through the line; worn cups cause pressure loss, erratic flow, and material waste.
- Fuel and Fluid Compatibility — Cup material is engineered to resist degradation from concrete slurry and the hydraulic pressures generated inside the pump cylinder, extending service intervals.
Piston cups are the primary sealing elements inside a concrete pump cylinder. They create the pressure-tight barrier between the piston face and the cylinder wall, allowing each stroke to push concrete forward through the delivery line rather than bypassing back around the piston. Over time, the abrasive nature of concrete slurry wears down the cup lips, causing a gradual loss of pumping pressure, inconsistent flow, and in severe cases, the inability to move material at all. Replacing the cups with a correctly rated kit restores full cylinder efficiency and protects the piston rod and cylinder bore from accelerated wear.
Part Details
| Part Number | EM14904 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Cup Kits |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HDZ |
| Mayco Pumps | C30HD |
| Mayco Pumps | C30HDG |
| Mayco Pumps | C30HDGA |
| Mayco Pumps | C30HDN |
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HDNI Precision |
| Mayco Pumps | C30HDNI Zenith |
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.
