Multiquip EM422 Motor Mount Block

The Multiquip EM422 Motor Mount Block is a genuine OEM component designed for a wide range of Multiquip and Whiteman ride-on power trowels, ride-on roller screeds, and power floats, including the MD80, MD105, STX6H, HTX6H, STXDF, LD60, PRX, WRS5200, and WRS5200DFPU series. As a direct OEM replacement sourced through Multiquip's authorized parts program, the EM422 is built to the exact specifications of the original part — no guesswork on fit or function. This block is a critical structural and vibration-management component, and using the correct OEM part ensures the engine or motor assembly remains properly secured during operation. DHS Equipment supplies this part with verified part number accuracy so you can order with confidence.

Key Features

• Genuine OEM Construction: — Manufactured to Multiquip's original specifications, ensuring the correct material density and load-bearing capacity needed to properly isolate and support the motor assembly.
• Direct-Fit Replacement: — Matches the original mounting geometry and hardware interface, allowing straightforward installation on compatible machines without modification to the mount bracket or frame.
• Broad Fitment Coverage: — Compatible with MD80, MD105, STX6H, STXDF, HTX6H, HTXG6DF, LD60, LD6/LD6SL, PRX, WRS5200, WRS5200DFPU, WRSPUDF, and HHXDF4-DF5 series equipment.
• Vibration Isolation Integrity: — A worn or deteriorated motor mount block allows excessive vibration to transfer into the frame, leading to accelerated wear on surrounding components and reduced operator control — this OEM block restores correct isolation.
• Verified Part Number: — Listed under Multiquip part number EM422, matching OEM documentation for these machine families so you can cross-reference before ordering.

The motor mount block secures the engine or motor to the machine's frame while absorbing and dampening vibration generated during operation. On ride-on trowels and screeds, this is especially important — excessive movement at the motor mount puts stress on connected drive components and can affect blade speed consistency and overall machine control. When the mount block cracks, compresses, or deteriorates, operators often notice increased vibration through the frame, unusual noise from the power unit, or visible movement of the motor under load. Replacing the EM422 motor mount block promptly restores proper engine positioning and protects surrounding drivetrain components from secondary wear.

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.