Multiquip M801821 Stha Jd 55Hp Belt

The Multiquip M801821 Stha Jd 55Hp Belt is a genuine OEM replacement belt designed for the STX55J6 and STX55Y6 hydrostatic ride-on power trowels. As a direct OEM component sourced through Multiquip's authorized parts program, it is manufactured to the exact specifications required by these machines. This belt is confirmed to fit both the STX55J6 and STX55Y6 models, so you can order with confidence knowing you're getting the right part the first time. DHS Equipment stocks Multiquip OEM parts to keep your equipment running at peak performance.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's exact material and dimensional tolerances for consistent power transmission under trowel operating loads.
• Direct Drop-In Replacement — Engineered to match the original routing and tension profile of the STX55J6 and STX55Y6 drive system for a straightforward swap.
• Confirmed Fitment — Verified for STX55J6 and STX55Y6 hydrostatic ride-on trowels; use part number M801821 to confirm compatibility before ordering.
• Sustained Drive Performance — A properly tensioned belt maintains consistent blade speed and hydraulic drive response; a worn or cracked belt causes slippage, overheating, and loss of finishing control.
• Operational Safety — Belt integrity is critical on ride-on trowels — a failed belt under load can cause sudden loss of blade control, making timely replacement essential.

The drive belt on a hydrostatic ride-on trowel transfers power from the engine to the machine's hydraulic and blade drive systems, maintaining the rotational speed needed for consistent concrete finishing. When a belt stretches, cracks, or breaks, the operator loses control over blade pitch and travel, which can result in uneven surface finishing or a complete work stoppage. Replacing a worn belt with a genuine OEM part like the Multiquip M801821 restores correct tension and ensures the drivetrain operates as the machine was originally designed to perform.

For questions about fitment or to confirm this is the correct belt for your machine, contact the DHS Equipment parts team before ordering.

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.