The Multiquip 1211120910 Connecting Rod Bush Standard is a genuine OEM component designed for Mayco concrete pump models C30HDNI, C30HDN, C30HDNI Precision, and C30HDNI Zenith. As a direct OEM replacement, this standard-specification bush is manufactured to the exact tolerances required to maintain proper fit and function within the connecting rod assembly. Sourced directly from Multiquip, part 1211120910 ensures you are installing the correct component for your Mayco pump without guesswork.
Key Features
- Genuine OEM Tolerancing — Manufactured to the exact bore and wall thickness specifications of the original connecting rod bush, ensuring correct press fit and load distribution within the rod assembly.
- Standard Specification — This is the standard-size bush, designed for use in unmachined or unmodified connecting rod bores — confirm your rod bore condition before ordering an oversized alternative.
- Broad Mayco Pump Compatibility — Confirmed fitment across C30HDNI, C30HDN, C30HDNI Precision, and C30HDNI Zenith concrete pump models.
- Protects Crankshaft and Rod Integrity — A worn or failed connecting rod bush allows metal-on-metal contact between the rod and crankpin, accelerating wear and risking catastrophic engine or drive damage during pump operation.
- Verified Multiquip Part Number — Part number 1211120910 cross-references directly to the Mayco pump service parts catalog, so you can order with confidence.
The connecting rod bush is a precision-fit sleeve pressed into the small or big end of the connecting rod, providing a replaceable bearing surface between the rod and the crankpin or piston pin. It absorbs the high cyclic loads generated during each pump stroke and allows smooth rotational movement while maintaining oil film separation between surfaces. When this bush wears, clearances open up, causing knocking, vibration, and loss of stroke efficiency — left unaddressed, a worn bush can lead to connecting rod failure and extensive internal damage to the pump drive assembly.
Part Details
| Part Number | 1211120910 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Connecting Rod Bush Standard |
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.
