The Honda 91424-Z5R-804 Fuel Tube (4.5X260) is a genuine OEM replacement designed for GX340 and GX390 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a proper fit within the fuel delivery circuit. This fuel tube is the correct 4.5 mm diameter, 260 mm length variant — match those dimensions against your existing tube before ordering to confirm this is the right listing for your engine.
Key Features
- Genuine OEM Fuel Delivery Integrity — sourced directly from Honda, this tube meets the exact inside diameter and wall thickness required for consistent fuel flow to the carburetor, with no improvised sizing or substitution.
- Variant-Specific Sizing — the (4.5X260) designation identifies a specific diameter and length; confirm this matches your engine's fuel line routing before purchasing, as Honda lists multiple tube sizes across its engine range.
- Designed for GX340 and GX390 Engines — Honda lists this tube for GX340 and GX390 horizontal shaft engines; check your engine's serial number against the fitment table to confirm applicability to your specific production run.
- Restores Proper Fuel Supply — a cracked, hardened, or kinked fuel tube restricts fuel delivery and causes hard starting, lean running, or stalling under load; replacing it with the correct OEM tube restores a steady, unrestricted fuel supply to the carburetor.
The fuel tube carries gasoline from the fuel tank to the carburetor, maintaining a continuous and properly metered fuel supply to keep the engine running at the right mixture under all operating conditions. Over time, the tube can harden, crack, or develop pinhole leaks due to heat cycling and fuel exposure, which disrupts fuel flow and creates a potential leak at the engine. Replacing a worn tube with the correct Honda OEM part, part number 91424-Z5R-804, restores a sealed, uninterrupted fuel path and keeps the engine starting and running as intended.
Part Details
| Part Number | 91424-Z5R-804 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Fuel Tube (4.5X260) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX340, GX390 | 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.
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