Multiquip EM505204 Large Pulley

The Multiquip EM505204 Large Pulley is a genuine OEM replacement designed for Essick and Whiteman plaster and mortar mixer models, including the EM90P/S, WM70S/P, EM70P/S, and WM90S/P. As a direct OEM component sourced through Multiquip's authorized parts program, the EM505204 meets the same dimensional and material specifications as the original part installed at the factory. Verify your model code against the confirmed fitment list above to ensure the EM505204 is the correct pulley for your machine before ordering.

Key Features

• OEM-Grade Dimensional Accuracy — Manufactured to the original pulley profile, ensuring correct belt alignment and groove engagement on your mixer drive system.
• Direct Drop-In Replacement — Matches the original mounting bore and hub configuration, allowing straightforward installation without machining or adaptation.
• Confirmed Mixer Fitment — Compatible with Essick EM70P/S and EM90P/S, and Whiteman WM70S/P and WM90S/P mortar and plaster mixers.
• Maintains Belt Drive Efficiency — A correctly sized large pulley preserves the designed drive ratio, keeping drum rotation speed and torque output within spec during heavy mixing loads.
• Prevents Premature Belt Wear — A worn or undersized pulley causes belt slippage, uneven wear, and eventual drive failure; replacing it with the correct OEM part protects the entire belt drive system.

The large pulley is a core component of the belt drive system on Essick and Whiteman plaster and mortar mixers. It works in tandem with a smaller drive pulley to transmit engine power to the mixing drum, with its diameter determining the final drive ratio and drum speed. When the large pulley becomes worn, cracked, or grooved, belt tension and tracking are compromised, leading to slippage, reduced mixing performance, and accelerated wear on connected drive components.

For fitment questions or help confirming the right part for your mixer, contact the DHS Equipment team.

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.