The Multiquip 27923401H3 Piston is a genuine OEM component designed for the B46S90 walk-behind power trowel. Sourced directly from Multiquip, this piston is manufactured to the exact tolerances required for proper engine operation in B46S90 series machines. When you order by part number, you get the correct part the first time — no guesswork, no adaptation.
Key Features
- OEM-Grade Dimensional Accuracy — Cast and machined to the precise bore diameter, compression height, and ring groove dimensions specified for this engine, ensuring correct compression and combustion performance.
- Direct Drop-In Replacement — Engineered to install in place of the original piston with correct wrist pin fit and ring pack compatibility, simplifying the rebuild process.
- Confirmed Fitment for B46S90 — Verified for use in Multiquip B46S90 walk-behind power trowels; verify your model before ordering to ensure compatibility.
- Restores Full Engine Output — A worn or damaged piston causes loss of compression, increased oil consumption, and rough running; replacing it with a correctly spec'd OEM piston brings engine performance back to design levels.
- Fuel System Integrity — Proper piston fit maintains the combustion seal that controls fuel burn efficiency, supporting consistent power delivery through every trowel pass.
The piston is a core reciprocating component inside the engine cylinder, responsible for compressing the air-fuel mixture and transferring combustion force to the crankshaft via the connecting rod. Its fit within the cylinder bore directly controls compression pressure, oil consumption, and overall engine efficiency. When a piston wears, scores, or cracks, the engine loses power, burns oil, and may fail to start reliably — making timely replacement critical to keeping the trowel operational on the slab.
Part Details
| Part Number | 27923401H3 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | B46S90 |
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.
