Wacker Neuson 5000156618 Throttle Flap

The Wacker Neuson Throttle Flap is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including CT36-9 and CT48-9 walk-behind concrete power trowels, BFS 935B, BFS 914B, BFS 940W, BFS 16, BFS 90R, BFSX 90R, and BFSX 16 floor saws, PT3 trash pumps, BPU 3050 reversible vibratory plate compactors, and GPi4300 and GPSi4300 portable inverter generators. Sourced directly from Wacker Neuson, part number carries the same fit, form, and function as the original part it replaces. This throttle flap is the correct OEM solution when your engine is no longer responding to throttle input as it should, making it a reliable choice for service technicians and operators maintaining equipment across multiple product families.

Key Features

• OEM Airflow Calibration: — Manufactured to the exact geometry and material spec of the original, ensuring the throttle flap seats and seals correctly within the carburetor bore for accurate air-fuel metering.
• Broad Cross-Family Compatibility: — A single part number verified across concrete trowels (CT36-9, CT48-9), floor saws (BFS/BFSX series), the PT3 trash pump, BPU 3050 plate compactor, and GPi4300/GPSi4300 generators — ideal for service fleets running mixed Wacker Neuson equipment.
• Drop-In Carburetor Fit: — Replaces the worn or damaged flap using the original mounting hardware and pivot points, with no re-jetting or carburetor modifications needed.
• Restores Throttle Response: — A failed or warped throttle flap causes erratic RPM, poor acceleration, and rough idling; installing 5000156618 restores crisp, consistent engine response across the full throttle range.
• Fuel System Integrity: — A correctly sealing throttle flap prevents unmetered air from entering the intake, protecting engine tune and helping avoid lean-run conditions that can accelerate wear.

The throttle flap is the rotating valve inside the carburetor's bore that controls how much air enters the engine in response to throttle input. When you open the throttle, the flap rotates to allow greater airflow, which draws in more fuel and increases engine speed. When the flap warps, cracks, or develops excessive shaft wear, the engine loses the ability to hold a steady RPM — symptoms include hunting at idle, sluggish acceleration, and an engine that won't reach full power. Replacing the throttle flap with a correctly sized OEM part like 5000156618 restores precise airflow control and brings engine performance back to specification.

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.