The Multiquip 501402400 Tightener Pulley is a genuine OEM component designed for MDR-9DYE, MDR-9D, and MDR-9GH ride-on power trowels. Sourced directly from Multiquip, this tightener pulley is an exact match for the original part, ensuring a correct fit within the drive belt system. If your trowel is showing signs of belt slippage, excess vibration, or uneven blade performance, the tightener pulley is a common wear point worth inspecting. DHS Equipment stocks this part ready to ship so you can get your machine back to work fast.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original design specifications, with the correct bore diameter, pulley profile, and rotational tolerance required for proper belt tension in ride-on trowel applications.
- Direct-Fit Installation — Drops into the existing mounting position on the MDR-9DYE, MDR-9D, and MDR-9GH without modification, replacing the original tightener pulley on a one-to-one basis.
- Confirmed Fitment — Verified for MDR-9DYE, MDR-9D, and MDR-9GH ride-on power trowels, giving you confidence you're ordering the right part for your machine.
- Belt Drive Integrity — A correctly functioning tightener pulley maintains consistent belt tension across the drive system, supporting steady blade speed and smooth trowel operation on the finishing deck.
- Wear-Point Replacement — Tightener pulleys are subject to continuous rotational load during operation; replacing a worn or seized pulley prevents belt damage and protects surrounding drive components from accelerated wear.
The tightener pulley keeps the drive belt under the correct tension throughout the trowel's operating cycle. Without proper tension, the belt can slip, wear unevenly, or jump the drive path entirely — leading to loss of blade speed control and potential damage to the belt and adjacent components. Replacing a worn tightener pulley is a straightforward service step that restores consistent power transfer from the engine to the finishing blades.
Part Details
| Part Number | 501402400 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Tightener Pulley |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Trowels | MDR-9DYE |
| Power Trowels | MDR-9D |
| Power Trowels | MDR-9GH |
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.
Multiquip
Multiquip Part # 501402400A - Tightener Assembly Belt D.N.O. Fi - Genuine OEM Part
