Multiquip 2791500133 Head Gasket

The Multiquip 2791500133 Head Gasket is a genuine OEM replacement designed for the B46S90 Whiteman walk-behind power trowel. As a direct OEM part, it is built to the exact tolerances required for a proper combustion seal on the B46S90 engine. Sourced directly through Multiquip's authorized parts network, this head gasket ensures the engine performs as intended with no compromises on sealing integrity. DHS Equipment stocks this part to keep your Whiteman trowel running at full capacity.

Key Features

• Genuine OEM Sealing Spec — Manufactured to the exact compression and material grade required for the B46S90 engine head, ensuring a consistent, leak-free seal between the cylinder head and block.
• Direct Drop-In Replacement — Matches the original mounting pattern and thickness profile of the factory head gasket, so it seats correctly without rework or shimming.
• Confirmed Fitment for B46S90 — Verified for the Whiteman B46S90 walk-behind power trowel; always cross-reference your model before ordering.
• Preserves Engine Compression — A properly seated head gasket maintains the combustion chamber seal that allows the engine to develop full power output, keeping blade speed consistent throughout the finishing pass.
• Critical Safety Seal — A failed head gasket can allow combustion gases or coolant to escape the engine, creating a risk of overheating, power loss, or fire. Replacing with a genuine OEM part restores the engineered safety margin.

The head gasket sits between the cylinder head and the engine block, forming a pressure-tight seal that contains combustion gases and, where applicable, separates coolant and oil passages from the combustion chamber. Without an intact seal, compression leaks out of the cylinder, causing loss of power, hard starting, and potentially mixing fluids that can rapidly damage internal engine components. When a head gasket fails — through heat cycling, overtorquing, or simple wear — replacing it promptly with a correctly rated OEM part is essential to restoring full engine performance and preventing further damage.

For questions about fitment or part availability, 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.