The Multiquip 12037 Piston Ring Set OS=1.00 is a genuine OEM component designed for C30HDNI and C30HDN series Mayco concrete pumps, including C30HDNI Precision and C30HDNI Zenith variants. As a direct OEM replacement, this ring set meets the original design specifications for these swing-tube concrete pump models, ensuring a correct fit in the pumping cylinder. DHS Equipment supplies this part direct, so you can verify fitment by model code and order with confidence.
Key Features
- Genuine OEM Construction: — Manufactured to the original bore tolerances required for the pumping cylinder in C30HDNI and C30HDN concrete pumps, preserving compression integrity and output consistency.
- Oversized Specification OS=1.00: — Purpose-built at the OS=1.00 oversize dimension for use in bored or reconditioned cylinders, ensuring a correct seal against the cylinder wall without shimming or modification.
- Broad C30 Series Compatibility: — Confirmed fitment across C30HDN, C30HDNI, C30HDNI Precision, and C30HDNI Zenith Mayco concrete pump models.
- Sustained Pumping Pressure: — Properly seated piston rings maintain the cylinder pressure needed to push concrete mix consistently; worn rings cause pressure loss, output drop, and uneven delivery.
- Verified Multiquip Part Number: — Sourced and listed under part number 12037, so you can match against your service manual or parts diagram before ordering.
Piston rings form the sealing interface between the piston and the cylinder wall inside a concrete pump's pumping circuit. They maintain the compression needed to generate consistent hydraulic force against the concrete mix, enabling steady, controlled output through the delivery line. When piston rings wear, score, or lose their tension, the cylinder loses compression, pump output becomes erratic, and the machine may struggle to move stiff or aggregate-heavy mixes — making timely ring replacement critical to keeping a concrete pump performing at spec.
Part Details
| Part Number | 12037 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Ring Set OS=1.00 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | C30HDNI |
| Mayco Pumps | C30HDN |
| 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.
