The Multiquip 509000 is a genuine OEM Cotter Pin designed for Essick and Whiteman concrete and mortar mixer models, including the EM12M Series, EM120S Series, EM120P Series, WM120SH, and WM120PH. As a genuine OEM component, it is produced to the same specifications as the original part installed at the factory, ensuring a direct, accurate fit with no guesswork. Sourced directly through authorized Multiquip channels and sold by DHS Equipment, the 509000 is the correct replacement when your original pin is lost, bent, or worn. Confirm your model number before ordering to ensure compatibility with your specific mixer configuration.
Key Features
- Genuine OEM Construction — Manufactured to exact Multiquip specifications, ensuring the correct pin diameter, length, and material grade for secure retention on mixer components.
- Direct Drop-In Replacement — Installs in the same position as the original, with no reworking of adjacent hardware or mounting points required.
- Broad Mixer Compatibility — Fits EM12M Series, EM120S Series, EM120P Series, WM120SH, and WM120PH mixer models, covering a wide range of Essick and Whiteman mixer configurations.
- Maintains Positive Retention — A properly seated cotter pin locks axles, pins, and fasteners in place, preventing unintended movement or disassembly of critical rotating or hinged mixer components.
- Low-Cost, High-Impact Fastener — Small parts like cotter pins are often overlooked during maintenance, but a missing or damaged pin can lead to component separation and machine downtime mid-pour.
A cotter pin is a small split fastener inserted through a drilled hole in a shaft, bolt, or clevis pin to lock it securely in position. Once inserted and bent open, it prevents the fastener from backing out or shifting during machine operation. On concrete and mortar mixers, cotter pins are commonly used to secure drum pivot points, axle ends, and handle linkages — components that experience constant vibration and cyclical loading during mixing. When a cotter pin fails, bends, or goes missing, the fastener it secures can work loose, leading to misalignment, accelerated wear on surrounding parts, or a more significant mechanical failure. Replacing a worn or missing cotter pin promptly is one of the simplest and most cost-effective preventive maintenance steps an operator can take.
For fitment questions or help confirming the right part for your mixer, contact the DHS Equipment team directly.
Part Details
| Part Number | 509000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cotter Pin |
Compatibility & Fitment
| Name | Model |
|---|---|
| Essick Mixers | EM12M Series |
| Whiteman Mixers | WM120SH |
| Whiteman Mixers | WM120PH |
| Essick Mixers | EM120S Series |
| Essick Mixers | EM120P Series |
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.
