The Honda 16198-ZCN-000 Drain Tube is a genuine OEM component designed for GX630, GX660, and GX690 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the exact specifications of the original, ensuring a correct fit and proper function in the fuel system. This drain tube is compatible across the GX630, GX660, and GX690 engine series — confirm your engine's serial number against the fitment table to ensure part number 16198-ZCN-000 is the right match for your specific unit. Honda supersedes parts at serial breaks, so verifying your serial number before ordering is always the smart move.
Key Features
- Genuine Honda OEM Construction — manufactured to Honda's exact dimensional and material specifications, so the drain tube seats and seals correctly in the fuel system without improvisation or adaptation.
- Broad GX Big-Block Compatibility — fits GX630, GX660, and GX690 horizontal shaft engines, covering Honda's larger-displacement commercial GX series.
- Serial Number Verification Recommended — Honda updates parts at production serial breaks; check your engine's serial number against the fitment table to confirm this is the correct tube for your unit.
- Restore Proper Fuel Drainage — a compromised or missing drain tube can allow fuel to pool or route incorrectly, leading to flooding, contamination, or difficult starts on these large-displacement engines.
The drain tube provides a controlled path for draining fuel from the carburetor float bowl or fuel circuit, allowing the engine to be safely shut down or serviced without fuel spillage into the intake or onto the engine. On large-displacement engines like the GX630, GX660, and GX690, proper fuel routing through this tube keeps the system clean and the engine ready to start reliably. When the tube cracks, collapses, or goes missing, fuel can drain unpredictably, causing hard starts, rough running, or a potential fire hazard during service.
Part Details
| Part Number | 16198-ZCN-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Drain Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX690 | 1039241-9999999 |
| Horizontal Shaft Engine | GX630, GX660 | 2030752-9999999 |
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.
