The Multiquip EM516786 Coupler Assembly is a genuine OEM component designed for Mayco LS-series hydraulic concrete pumps, including the LS400, LS500, LS600, LS40D, LS40TD, and LS50TD. As a direct OEM replacement, this coupler assembly is manufactured to the same specifications as the original part, ensuring a correct, trouble-free installation without the need for modification. DHS Equipment sources this part directly through authorized Multiquip channels, so you can order with confidence knowing you're getting the right part for your machine. Confirm your model code against the fitment list above before ordering to ensure compatibility with your specific unit.
Key Features
- Genuine OEM Construction — Manufactured to the original engineering specification for Mayco LS-series concrete pumps, ensuring the coupling engagement and torque transfer characteristics match what the machine was designed around.
- Direct-Fit Replacement — Mounts in the same position as the original coupler assembly, using existing attachment points for a straightforward swap during scheduled maintenance or field repair.
- Broad LS-Series Compatibility — Confirmed fitment across LS400, LS500, LS600, LS40D, LS40TD, and LS50TD hydraulic concrete pump models.
- Sustained Power Transfer — A properly functioning coupler assembly maintains clean, consistent power transmission between the drive and pump components; a worn or failed coupler causes slippage, vibration, and loss of pumping output.
- Pressure-System Integrity — On a hydraulic concrete pump, a correctly seated coupler is critical to maintaining system pressure; a compromised unit can lead to erratic output and potential hydraulic circuit strain.
The coupler assembly connects the drive source to the pump mechanism, transmitting rotational force while accommodating minor misalignment between mating components. In a hydraulic concrete pump like the Mayco LS series, this part plays a central role in maintaining consistent output pressure and smooth pump operation. When the coupler wears or fails, the result is typically vibration, reduced pumping efficiency, or a complete loss of drive engagement — making timely replacement essential to keeping the pump productive on the pour.
Part Details
| Part Number | EM516786 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Coupler Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS400 |
| Mayco Pumps | LS500 |
| Mayco Pumps | LS600 |
| Mayco Pumps | LS40D |
| Mayco Pumps | LS40TD |
| Mayco Pumps | LS50TD |
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.
