Honda 16015-ZN1-831 Float Chamber Set

The Honda 16015-ZN1-831 Float Chamber Set is a genuine OEM component designed for GX620 and GX670 horizontal shaft engines. As a direct Honda OEM replacement, this set is manufactured to the same specifications as the original, ensuring a proper fit with no improvisation required. Confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and more than one revision may exist for these engines.

Key Features

• Genuine OEM Fuel System Fit — manufactured by Honda to match the original float chamber geometry, ensuring correct fuel-level calibration and consistent metering in GX620 and GX670 carburetors.
• Direct Carburetor Replacement — this set replaces the complete float chamber assembly, restoring the sealed fuel reservoir the carburetor depends on for steady fuel delivery.
• GX620 and GX670 Compatibility — confirmed fitment for GX620 and GX670 horizontal shaft engines; check your serial number against the fitment table to ensure you have the correct revision.
• Prevents Fuel Starvation and Flooding — a worn or damaged float chamber compromises the fuel level inside the carburetor, causing hard starting, rough running, or rich-running conditions; this set restores proper operation.

The float chamber is the reservoir at the base of the carburetor that holds a small. A float and needle valve inside the chamber work together to maintain the correct fuel level — when the level drops, the float falls and opens the needle valve to allow more fuel in; when the level rises, the float lifts and closes the valve. If the chamber cracks, warps, or its sealing surfaces deteriorate, fuel level becomes erratic, leading to lean stumbles, rich flooding, or fuel leaks. Replacing the float chamber set restores the airtight, fuel-tight enclosure the carburetor needs to deliver steady, repeatable fuel metering across all operating conditions.

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.