The Multiquip 21576 Fuel Tank 11 Gallon Poly is a genuine OEM replacement component designed for HTX44 and STX55 series hydrostatic ride-on power trowels. This factory-sourced tank is a direct-fit replacement for models including HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, STX55Y6, STXD6i, and HTXD6i. As a genuine Multiquip OEM part, the 21576 is manufactured to the same specifications as the original, ensuring a correct installation with no guesswork on fitment. DHS Equipment supplies this part as an authorized Multiquip distributor, so you can order with confidence.
Key Features
- Genuine OEM Poly Construction — Manufactured from the same fuel-resistant polyethylene material as the original, resisting fuel degradation and cracking under field conditions.
- Correct 11-Gallon Capacity — Matches the original tank volume exactly, preserving the intended runtime and fuel system balance for HTX44 and STX55 trowels.
- Direct-Fit for HTX44 and STX55 Series — Confirmed fitment for HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, STX55Y6, STXD6i, and HTXD6i; mounts to existing hardware points without modification.
- Fuel System Integrity — A properly sealed, undamaged tank prevents fuel leaks that can create fire hazards and interrupt finishing operations mid-pour.
- Fuel Leak Safety — Replacing a cracked or damaged tank eliminates the risk of fuel seepage near the engine and hot surfaces, an important compliance consideration on occupied jobsites.
The fuel tank on a ride-on trowel stores and delivers the gasoline supply that keeps the engine running throughout concrete finishing operations. An 11-gallon poly tank provides extended run time between refueling stops, which is critical when working large pours with tight finishing windows. When a fuel tank cracks, warps, or develops a leak, the machine faces unplanned shutdowns and potential fire risk — replacing it promptly with a genuine OEM part like the Multiquip 21576 restores safe, uninterrupted operation.
Part Details
| Part Number | 21576 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Fuel Tank 11 Gallon Poly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | STXD6i |
| Whiteman Ride-On Power Trowels | HTXD6i |
| Whiteman Ride-On Power Trowels | STX55Y6 |
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.
