The Multiquip EM98128 Engine Coupler Assembly is a genuine OEM component designed for LS400, LS500, LS40D, LS40TD, and LS50TD hydraulic-driven concrete pumps. As a factory-sourced replacement, EM98128 meets the same exacting standards as the part that left the production line, ensuring consistent power transfer between the engine and hydraulic pump system. This assembly is a direct fit for Mayco LS-series concrete pumps, making it the correct choice when maintaining or rebuilding your machine to original operating condition.
Key Features
- Genuine OEM Construction — Factory-engineered to match the original torque capacity and coupling geometry, so power transfer between engine and hydraulic system stays consistent under load.
- Direct-Fit Replacement — Designed to bolt into LS-series pump installations without machining or modification to mounting interfaces.
- Broad LS-Series Compatibility — Fits LS400, LS500, LS40D, LS40TD, and LS50TD hydraulic-driven concrete pump models.
- Sustained Pumping Output — A properly functioning coupler maintains the drive connection needed for steady hydraulic pressure and consistent concrete output; a worn or failed coupler can cause erratic pumping or total loss of drive.
- Drive-Train Integrity — Coupling failures under load can create sudden mechanical stress events; replacing with an OEM assembly preserves the designed safety margin of the drivetrain.
The engine coupler assembly serves as the mechanical link between the engine output shaft and the hydraulic pump on LS-series concrete pumps. It transmits rotational force from the engine into the hydraulic circuit that drives the pumping action, absorbing minor misalignment and shock loads in the process. When a coupler wears out or fails, the engine loses its connection to the hydraulic system entirely, halting concrete flow — making timely replacement with the correct OEM part critical to keeping pours on schedule.
Part Details
| Part Number | EM98128 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Engine Coupler Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mayco Pumps | LS400 |
| Mayco Pumps | LS500 |
| 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.
