The Multiquip 25857-301 is a genuine OEM Driven Pulley CM4EB designed for the CM4EB concrete mixer. Sourced directly from Multiquip, this pulley is an exact-match component that maintains the belt drive system's correct speed ratio and torque transfer as specified for CM4EB equipment. Choosing a genuine OEM part means no guesswork on dimensions, bore sizing, or groove profile — this is the same component installed at the factory. If your CM4EB mixer is showing signs of belt slippage, uneven drum rotation, or excessive vibration, a worn or damaged driven pulley is often the root cause, and 25857-301 is the correct service replacement.
Key Features
- OEM-Matched Groove Profile — Manufactured to the exact belt groove geometry required for the CM4EB drive system, ensuring full belt contact and consistent power transfer.
- Direct Bolt-On Replacement — Engineered to match the original bore diameter and hub dimensions of the CM4EB, so installation follows the standard service procedure without modification.
- CM4EB Concrete Mixer Fitment — Confirmed compatibility with the Multiquip CM4EB concrete mixer series.
- Sustained Drum Speed Accuracy — A correctly sized driven pulley maintains the designed drum rotation speed, which directly affects mix quality and batch consistency.
- Durable Construction — Built to withstand the continuous rotational loads and jobsite conditions typical of concrete mixer operation, resisting wear at the belt contact surface.
The driven pulley is a core component of the belt drive system in the CM4EB concrete mixer. It receives rotational force from the engine via the drive belt, transferring that motion to the drum at the correct speed and torque to mix concrete effectively. When the driven pulley wears, cracks, or develops groove damage, the belt can slip or track incorrectly — leading to reduced drum speed, inconsistent mixing, and accelerated belt wear. Replacing it with the correct OEM component restores proper belt tension geometry and ensures the drive system operates as designed.
Part Details
| Part Number | 25857-301 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Driven Pulley CM4EB |
Compatibility & Fitment
| Name | Model |
|---|---|
| CM4EB | CM4EB |
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.
