Multiquip X430440161 Tank Cap

The Multiquip X430440161 Tank Cap is a genuine OEM replacement designed for Whiteman walk-behind power trowel models B46S90, B46, BH90C, BH11C, and BS90C. As a direct OEM part, it is manufactured to the same specifications as the original component installed at the factory, ensuring a proper seal and correct fitment every time. DHS Equipment stocks this part to keep your Whiteman walk-behind trowel running without unnecessary delays. Confirm your model code against the fitment list above before ordering to ensure compatibility.

Key Features

• OEM-Grade Seal Integrity — Manufactured to the original specification, this tank cap delivers the correct thread engagement and sealing pressure to prevent leaks and contamination.
• Direct Drop-In Replacement — Engineered to match the original tank opening dimensions on compatible Whiteman walk-behind trowels, so installation is straightforward with no modifications to the tank or filler neck.
• Broad Whiteman Trowel Compatibility — Fits B46S90, B46, BH90C, BH11C, and BS90C walk-behind power trowel models, covering a wide range of Whiteman B-series and BH-series machines.
• Contamination Defense — A properly seated tank cap keeps moisture, debris, and dirt out of the fuel or fluid reservoir, protecting internal components from premature wear and fuel system issues.
• Fuel System Safety — A failed or missing tank cap can allow fuel vapors to escape or create spill hazards during operation — replacing it promptly with the correct OEM cap maintains safe machine operation.

The tank cap seals the fuel or fluid reservoir on your walk-behind power trowel, preventing leaks, spills, and contamination during operation and transport. When a tank cap cracks, strips, or goes missing, it exposes the fluid system to dirt and moisture ingestion, which can accelerate wear on fuel system components and create unsafe operating conditions. Replacing a worn or damaged cap with the correct OEM part restores proper reservoir sealing and keeps the machine performing as intended.

For questions about fitment or to confirm this is the right part for your machine, contact the DHS Equipment team directly.

Part Details

Compatibility & Fitment

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.