The Honda 18310-Z8W-V62 Muffler (Tsurumi) is a genuine OEM exhaust muffler designed for GX240, GX340, and GX390 horizontal shaft engines. As a direct Honda OEM component, this muffler is manufactured to the exact specifications required for proper exhaust flow and sound attenuation on these engines. Honda supersedes exhaust parts at serial breaks, so verify your engine's serial number against the fitment table before ordering to ensure this is the correct muffler for your unit. The Tsurumi designation identifies this as a specific variant — confirm it matches your existing muffler before purchasing.
Key Features
- Genuine Honda OEM Part — sourced directly from Honda, this muffler meets the exact exhaust backpressure and outlet geometry specifications engineered for GX240, GX340, and GX390 engines
- Variant-Specific Fitment — the Tsurumi designation identifies this as a specific muffler variant; match it to the part currently on your engine to confirm you are ordering the right unit
- Exhaust Performance Restored — a cracked or degraded muffler raises exhaust noise, disrupts backpressure, and can allow hot exhaust gases to escape near the engine; replacing it restores proper exhaust management and quieter operation
- Serial Number Verification Recommended — Honda updates exhaust components across production runs, so cross-check your engine's serial number with the fitment table to confirm compatibility
A muffler reduces the noise and heat of exhaust gases leaving the engine's cylinder. After combustion, hot high-pressure gases are routed through the muffler's internal chambers, which expand and cool the flow before it exits to atmosphere — significantly lowering operating noise. On GX240, GX340, and GX390 engines, the muffler also plays a role in maintaining the correct exhaust backpressure that supports efficient combustion. When a muffler cracks, corrodes, or its internal baffles deteriorate, the engine runs louder, exhaust gases can escape at unintended points, and engine efficiency can suffer — making timely replacement important for both performance and safe operation of the equipment the engine powers.
Part Details
| Part Number | 18310-Z8W-V62 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler (Tsurumi) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX240, 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.
