The Honda 18310-Z0S-H20 Muffler is a genuine OEM replacement designed for WB20 and WB30 water pumps. As a direct Honda OEM part, it is manufactured to the exact specifications of the original component, ensuring a correct fit without modification. This muffler is built to restore proper exhaust function on both the WB20 and WB30 pump models, making it the right choice when the original unit is damaged, cracked, or worn. Always confirm your pump's serial number against the fitment table before ordering to ensure this is the correct part for your unit.
Key Features
- Genuine Honda OEM Part — manufactured to the original specification for precise exhaust backpressure and sound attenuation specific to Honda water pump engines
- Direct OEM Replacement — replaces the original muffler on WB20 and WB30 water pumps with no alterations needed
- Serial Number Verification Recommended — Honda supersedes parts at serial breaks; check your pump's serial number against the fitment table to confirm this is the correct muffler for your unit
- Exhaust Integrity Restored — a cracked or failed muffler disrupts exhaust flow and increases operating noise; replacing it keeps the pump running at proper back pressure and within expected sound levels
The muffler routes exhaust gases away from the engine and reduces the noise produced by combustion. On water pumps like the WB20 and WB30, it also plays a role in maintaining the correct exhaust backpressure the engine needs to run efficiently. When a muffler cracks, corrodes, or loses its integrity, exhaust can escape before it is properly silenced, resulting in excessive noise and potential performance loss. Replacing a damaged muffler with part number 18310-Z0S-H20 restores the exhaust system to its original operating condition.
Part Details
| Part Number | 18310-Z0S-H20 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WB20, WB30 | 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.
