The Multiquip EM507491 Idler Arm is a genuine OEM component designed for Whiteman and Essick plaster and mortar mixer models, including the WM90, WM70, EM90, and EM70 series. As a direct OEM replacement, it is manufactured to the same specifications as the original part, ensuring a correct installation with no guesswork. This part fits a wide range of Whiteman and Essick mixer configurations across both steel and poly drum variants, making it a reliable choice for operators servicing these machines. DHS Equipment stocks OEM Multiquip parts to help you get your mixer back in service with confidence.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original design specifications, ensuring the arm delivers the correct geometry and load capacity for mixer drive system integrity.
- Direct-Fit Replacement — Engineered to match original mounting points and dimensions on Whiteman and Essick mixer frames for a straightforward swap during servicing.
- Broad Mixer Compatibility — Fits WM90, WM70, EM90, and EM70 series mixers across multiple configurations including steel drum, poly drum, Honda, and MPower engine variants.
- Drive Belt Tension Integrity — A correctly functioning idler arm maintains consistent belt tension across the mixer drive system, supporting smooth, uninterrupted drum rotation under load.
- OEM Part Number Assurance — Ordering by Multiquip part number EM507491 confirms you are receiving the correct component for your specific mixer model, eliminating costly mismatches.
The idler arm is a structural component within the mixer's belt drive system, responsible for maintaining proper tension on the drive belt that transfers power from the engine to the mixing drum. When the idler arm is worn, bent, or damaged, belt tension becomes inconsistent, leading to belt slippage, uneven drum rotation, or premature belt wear. Replacing a failed idler arm restores correct drive system geometry and keeps the mixer operating at full mixing capacity.
For questions about fitment or to confirm compatibility with your specific mixer serial number, contact the DHS Equipment parts team directly.
Part Details
| Part Number | EM507491 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Idler Arm |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Mixers | WM90S/P |
| Whiteman Mixers | WM90PLF |
| Whiteman Mixers | WM90SLF |
| Whiteman Mixers | WM70PLF |
| Whiteman Mixers | WM70SLF |
| Essick Mixers | EM90SLF |
| Essick Mixers | EM70SLF |
| Whiteman Mixers | WM70S/P |
| Essick Mixers | EM90P/S |
| Essick Mixers | EM70P/S |
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.
