The Honda 18310-Z0H-821 Muffler is a genuine OEM replacement built for FG110 tillers and GX25 horizontal shaft engines. Sourced directly from Honda, this muffler is manufactured to the same specifications as the original unit, ensuring a correct, hassle-free installation. Honda supersedes parts at serial number breaks, so confirm your machine's serial number against the fitment table before ordering to make sure part number 18310-Z0H-821 is the right fit for your unit.
Key Features
- Genuine Honda OEM — manufactured by Honda to original specifications, not an aftermarket approximation, so exhaust routing, port alignment, and mounting dimensions match the factory unit exactly.
- Correct Exhaust Tone and Backpressure — a properly functioning muffler maintains the exhaust backpressure the engine is tuned for, supporting smooth, consistent power output. A cracked or deteriorated muffler disrupts that balance and increases noise.
- Fits FG110 Tillers and GX25 Engines — designed for FG110 tillers and GX25 horizontal shaft engines; verify your serial number against the fitment table to confirm applicability.
- Serial Number Verification Recommended — Honda updates part numbers at production breaks, so cross-check your machine's serial number before finalizing your order.
The muffler is the final stage of the exhaust system, channeling spent combustion gases away from the engine while reducing noise to an acceptable operating level. It is engineered to handle the high-temperature exhaust pulses produced during normal operation, and its internal baffling is sized to work with the specific displacement and port timing of the engine it serves. When a muffler cracks, rusts through, or its baffles collapse, exhaust gases escape before they are properly silenced, resulting in a sharp increase in operating noise and potentially a disruption to exhaust flow that can affect engine performance.
Part Details
| Part Number | 18310-Z0H-821 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX25 | All |
| Tiller | FG110 | 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.
