The Honda 16100-Z8N-803 is a genuine OEM Carburetor Assembly (BK06C B) designed for GX630, GX660, and GX690 horizontal shaft engines. As a direct Honda OEM part, it carries the correct jetting, needle settings, and fuel metering calibration engineered specifically for this engine family — not a generic approximation. This carburetor assembly is confirmed to fit GX630, GX660, and GX690 engines; verify your engine's serial number against the fitment table to confirm this is the right configuration for your unit. If you're replacing a worn or damaged carburetor on any of these engines, part number 16100-Z8N-803 is the factory-specified solution.
Key Features
- Correct Fuel Metering — genuine OEM jetting and needle calibration matched to the GX630, GX660, and GX690 engine family, so the engine runs on the air-fuel ratio Honda engineered it for
- Direct OEM Replacement — designed to install in place of the original unit with no modification; all mounting flanges, fuel ports, and throttle linkage interfaces match Honda's original specification
- GX630, GX660, GX690 Fitment — built specifically for Honda's large-displacement horizontal shaft engine lineup; confirm your serial number against the fitment table, as Honda supersedes carburetor assemblies at serial breaks
- Restored Power and Throttle Response — a worn or gummed carburetor causes hard starting, rough idle, and loss of power under load; a fresh OEM assembly restores clean fuel delivery and consistent throttle response across the power range
The carburetor is the component responsible for mixing air and fuel in the precise ratio the engine needs to start, idle, and run under load. On large-displacement horizontal shaft engines like the GX630, GX660, and GX690, the carburetor must meter fuel accurately across a wide throttle range to sustain the power output this engine family is known for. When a carburetor deteriorates — through varnish buildup from stale fuel, worn needle seats, or damaged gaskets — the engine struggles to start, hunts at idle, or surges and loses power under demand. Replacing it with the correct OEM assembly restores the engine's ability to deliver full, consistent output.
Part Details
| Part Number | 16100-Z8N-803 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Carburetor Assembly (BK06C B) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX630, GX660, GX690 | All |
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.
