The Multiquip 12010G3465 Piston Set with Pin OS=0.50 is a genuine OEM component designed for C30HDNI and C30HDN series concrete pumps, including Precision and Zenith engine variants. As a factory-sourced part, 12010G3465 delivers the exact oversize specification required for engines that have been bored to accept a 0.50mm oversize piston, ensuring correct compression and cylinder wall fit. This set is the right choice when rebuilding or overhauling the engine on your C30HDNI or C30HDN pump, where dimensional accuracy directly affects pump output and engine longevity.
Key Features
- Genuine OEM Oversize Specification: — Factory-sourced at OS=0.50, matching the precise bore diameter required after cylinder reconditioning — no guesswork on sizing.
- Complete Piston and Pin Set: — Includes the piston and wrist pin together, so you have everything needed for a full piston installation in a single part number.
- Direct Fitment for C30 Series Concrete Pumps: — Confirmed fit for C30HDNI, C30HDN, C30HDNI Precision, and C30HDNI Zenith engine configurations.
- Restores Engine Compression and Power: — A correctly sized oversize piston seals the combustion chamber properly, restoring power output and preventing blow-by that would otherwise cause rough running and oil contamination.
- Fuel System Integrity: — Proper piston-to-wall clearance reduces unburned fuel entering the crankcase, protecting oil quality and extending the service life of downstream engine components.
The piston and wrist pin are core engine components responsible for converting combustion energy into the mechanical force that drives the pump. The piston travels within the cylinder bore, and its fit against the bore wall determines how efficiently combustion pressure is captured and transferred. An oversize piston — such as this OS=0.50 set — is used when a cylinder has been bored or worn beyond its standard dimension, restoring the correct clearance between piston and wall. When a piston is worn or the wrong size is installed, compression drops, engine output suffers, and oil consumption increases, all of which reduce the concrete pump's ability to maintain consistent output pressure.
Part Details
| Part Number | 12010G3465 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston Set with Pin OS=0.50 |
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.
