Multiquip EM98211 Main Cylinder

The Multiquip EM98211 Main Cylinder is a genuine OEM component designed for hydraulically driven Mayco concrete pumps, including the LS400, LS500, LS600, LS60TD, LS40D, LS40TD, LS50TD, and LS600P series. As a direct factory replacement, this cylinder is sourced to the original specification and engineered to match the dimensional and pressure tolerances required by the LS pump family. Sourcing the correct OEM cylinder ensures the hydraulic pumping circuit maintains its rated output and stroke integrity. DHS Equipment supplies this part backed by Multiquip's OEM parts program.

Key Features

• OEM Bore and Wall Tolerances — Manufactured to the exact bore diameter and wall thickness specifications of the original, ensuring full hydraulic pressure retention and consistent stroke volume on every cycle.
• Direct-Swap Installation — Matches the original mounting interfaces and port configurations on LS-series pump housings, allowing the cylinder to seat and seal correctly without machining or modification.
• Broad LS-Series Compatibility — Confirmed fitment across LS400, LS500, LS600, LS60TD, LS40D, LS40TD, LS50TD, and LS600P hydraulic concrete pumps.
• Sustained Pumping Pressure — A correctly functioning main cylinder maintains the hydraulic force needed to push concrete through the line at rated volume; a worn or scored cylinder causes pressure loss, inconsistent output, and pump cycle failure.
• Hydraulic System Integrity — The cylinder's sealing surfaces are critical to containing hydraulic fluid under high pressure; using an OEM-spec replacement prevents fluid bypass that can damage downstream hydraulic components.

The main cylinder is the core reciprocating element in the hydraulic drive circuit of an LS-series concrete pump. It converts hydraulic pressure into the mechanical force that moves concrete through the pumping system, cycling back and forth under load with each stroke. When the cylinder bore wears, develops scoring, or loses its sealing integrity, the pump loses output pressure, concrete flow becomes erratic, and continued operation accelerates wear on seals, pistons, and valve components throughout the system.

Part Details

Compatibility & Fitment

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.