The Multiquip 21675 is a genuine OEM Pulley AK-32 X 3/4 designed for Multiquip and Whiteman walk-behind power trowel models including CA4HM, CA4.4HM, JS36H55, JS36H90H, and JS36LE. As a factory-sourced component, 21675 is manufactured to the exact dimensions and tolerances required by these trowel series, ensuring a correct fit on the drive system without reworking or adapting existing hardware. Sourcing the OEM pulley means you are installing the same part the machine was built with, maintaining proper belt alignment and drive engagement from the moment it goes on. DHS Equipment stocks this part to help you get your trowel back in service quickly.
Key Features
- OEM-Matched Bore and Groove Profile — The AK-32 X 3/4 specification confirms an exact 3/4-inch bore diameter and A-section sheave groove, matching the original pulley geometry on these trowel drive systems.
- Direct Drive-System Replacement — Drops onto the existing shaft and accepts the original drive belt without requiring spacers, modifications, or belt substitutions.
- Broad Trowel-Series Coverage — Confirmed fitment across CA4HM, CA4.4HM, JS36H55, JS36H90H, and JS36LE Multiquip and Whiteman walk-behind trowel models.
- Consistent Belt Tension and Tracking — A correctly sized pulley keeps the drive belt running true, preventing premature belt wear, slippage, and loss of blade speed during finishing passes.
- Genuine Multiquip OEM Part — Sourced directly from Multiquip, carrying the same part number 21675 used in the factory assembly, so there is no guesswork about compatibility.
The drive pulley on a walk-behind power trowel transfers engine power to the belt that drives the trowel blade gearbox, controlling rotor speed and finishing performance. When the pulley is worn, cracked, or undersized, the drive belt loses proper engagement, causing slippage, uneven rotor speed, and accelerated belt wear that can bring finishing work to a stop. Replacing a damaged pulley with the correct AK-32 X 3/4 unit restores full power transfer to the blade assembly and keeps the trowel performing consistently across the finishing pass.
Part Details
| Part Number | 21675 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pulley AK-32 X 3/4 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | CA4HM |
| Power Trowels | CA4.4HM |
| Walk-Behind Trowels | JS36H55 |
| Walk-Behind Trowels | JS36H90H |
| Walk-Behind Trowels | JS36LE |
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.
