Multiquip 22578 Pulley

The Multiquip 22578 Pulley is a genuine OEM replacement designed for STX55J6 and STX55Y6 hydrostatic ride-on power trowels. As a direct OEM component, it is manufactured to the same specifications as the original part, ensuring proper belt engagement and power transfer within the drivetrain. DHS Equipment stocks this part to get your Whiteman ride-on trowel back to work with confidence. Verify your model code against STX55J6 and STX55Y6 before ordering to confirm fitment.

Key Features

• Genuine OEM Construction — Manufactured to the original design specification, ensuring correct groove profile and dimensional accuracy for proper belt seating and engagement.
• Direct Drop-In Replacement — Matches the original mounting configuration on STX55J6 and STX55Y6 trowels, allowing straightforward installation without modification to hardware or bracketry.
• Confirmed Fitment — Verified for Whiteman STX55J6 and STX55Y6 hydrostatic ride-on power trowels in the STX super-sized series.
• Consistent Belt Tension and Drive Transfer — A correctly sized pulley maintains proper belt wrap angle and tension, supporting smooth, consistent power delivery to the trowel drive system.
• Prevents Belt Wear and Slippage — A worn or damaged pulley can cause premature belt deterioration, slipping under load, or uneven trowel blade engagement — replacing it restores drivetrain integrity.

A pulley is a rotating wheel that guides and drives a belt within the machine's power transmission system. On ride-on trowels like the STX55 series, the pulley transfers rotational force from the engine or motor to downstream components, maintaining the tension and alignment needed for consistent blade operation. When a pulley wears, cracks, or becomes misaligned, belts slip or wear unevenly, leading to loss of drive performance and potential damage to surrounding components.

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.