The Honda 17703-ZL8-800 Fuel Return Tube is a genuine OEM component designed for GC135, GC160, and GC190 horizontal shaft engines, as well as FG400 and FG500 tillers. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a proper fit with no guesswork. This fuel return tube routes excess fuel back through the fuel system, keeping the carburetor supplied correctly and preventing flooding or rough running. Confirm your unit's serial number against the fitment table before ordering, as Honda introduces part supersessions at specific serial breaks.
Key Features
- Genuine Honda OEM Construction — produced to the same specification as the original tube, maintaining correct fuel flow geometry and connection sizing for the carburetor circuit
- Direct OEM Replacement — engineered to install exactly as the original, with no trimming or adapting required on GC135, GC160, GC190 engines and FG400 and FG500 tillers
- Broad Fitment Coverage — covers GC-series horizontal shaft engines and FG-series tillers, including the FG400 and FG500, making this part useful across multiple Honda product lines
- Serial Number Verification Recommended — Honda updates fuel system components at production breaks, so check your machine's serial number against the compatibility table to confirm this is the correct tube for your unit
- Fuel System Integrity — a cracked, hardened, or leaking return tube disrupts carburetor fuel balance, leading to flooding, hard starting, or inconsistent engine speed; replacing it restores proper fuel circuit operation
The fuel return tube carries surplus fuel from the carburetor float chamber back toward the fuel tank or inlet, preventing pressure build-up and fuel overflow that would otherwise flood the engine. On small Honda engines like the GC series, this tube is a critical link in keeping the carburetor's fuel level consistent across varying throttle positions. When the tube cracks, kinks, or hardens with age, the resulting fuel imbalance typically shows up as flooding, rough idling, or difficulty starting — symptoms that disappear once the tube is replaced with a correctly sized OEM part like this one.
Part Details
| Part Number | 17703-ZL8-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Fuel Return Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GC135, GC160, GC190 | All |
| Tiller | FG400, FG500 | 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.
