The Honda 18310-Z1E-010 Muffler is a genuine OEM component designed for GXV340 and GXV390 vertical shaft engines. As a direct Honda OEM part, it is manufactured to the same specifications as the original unit, ensuring a correct installation with no guesswork on fit or function. This muffler is built for GXV340 and GXV390 engines across multiple production runs — verify your engine's serial number against the fitment table to confirm the right part for your unit before ordering.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this muffler matches the original exhaust component your engine shipped with, delivering the correct back-pressure characteristics and noise attenuation for the GXV340 and GXV390.
- Direct-Fit Replacement — engineered to the original mounting configuration, this part drops in place of the factory muffler without modification or adaptation to the exhaust port.
- Correct Fitment for GXV340 and GXV390 — designed specifically for these Honda vertical shaft engines; confirm your serial number against the fitment table, as Honda supersedes muffler part numbers at production breaks.
- Restored Exhaust Performance — a cracked, corroded, or deteriorated muffler allows exhaust gases to escape before they are properly silenced, raising noise levels and potentially affecting engine back-pressure; replacing it restores correct exhaust flow and sound control.
The muffler is the final stage of the exhaust system on a small engine. Hot combustion gases exit the cylinder through the exhaust port, travel through the exhaust pipe, and enter the muffler, where a series of internal chambers and baffles slow and cool the gas flow, reducing noise to an acceptable operating level before the gases discharge to atmosphere. When a muffler cracks, corrodes, or its internal baffles fail, exhaust noise increases noticeably and unburned gases can escape in unintended directions — both signs that the component needs immediate replacement to keep the engine operating as designed.
Part Details
| Part Number | 18310-Z1E-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GXV340, GXV390 | 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.
