The Multiquip 406021 Engine Indicator is a genuine OEM component designed for STX55, HTX44, and HHXDF4 series hydrostatic ride-on power trowels. As a direct OEM replacement, this part matches the original specification installed at the factory, ensuring it integrates correctly with the instrument panel on compatible Whiteman ride-on trowel models. Verified fitment includes the STX55Y6, STX55J6, HHXDF4-DF5, HTX44Y5, HTX44Y4, HTX44K5, and HTX44K4. Sourced directly from Multiquip, part 406021 is the correct choice when restoring accurate engine monitoring to your machine.
Key Features
- Genuine OEM Monitoring Accuracy — Manufactured to Multiquip's original output specification, so the indicator displays engine data correctly without calibration adjustments.
- Direct Panel Replacement — Designed to connect directly to the existing instrument panel harness on compatible trowel models, with no wiring adaptation needed.
- Broad STX and HTX Series Coverage — Fits STX55Y6, STX55J6, HHXDF4-DF5, HTX44Y5, HTX44Y4, HTX44K5, and HTX44K4 ride-on power trowels.
- Protects Engine and Drivetrain — A functioning engine indicator allows operators to catch abnormal readings early, preventing undetected conditions that can lead to costly mechanical damage.
- Operational Safety — On hydrostatic ride-on trowels, accurate engine data monitoring is essential for safe operation; a failed indicator removes a critical layer of operator awareness.
An engine indicator displays live engine data — such as RPM, oil pressure, temperature, or hour readings — directly to the operator during machine operation. On hydrostatic ride-on power trowels like the STX55 and HTX44 series, this feedback is essential for managing engine load and catching developing issues before they escalate. When the indicator fails or reads incorrectly, operators lose visibility into engine health, increasing the risk of undetected overheating, low oil pressure events, or overloading the hydraulic drive system.
For questions about fitment or to confirm this part is correct for your specific machine, contact the DHS Equipment parts team.
Part Details
| Part Number | 406021 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Engine Indicator |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STX55Y6 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | HHXDF4-DF5 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | HTX44K4 |
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.
