The Honda 18381-ZG3-800 is a genuine OEM Muffler Gasket (Non-Asbestos) designed for GD320 and GD410 horizontal shaft diesel engines. As a direct Honda OEM component, this gasket is manufactured to the exact specifications required for proper exhaust sealing on these engines. Confirm your engine's serial number against the fitment table before ordering.
Key Features
- Non-Asbestos Exhaust Sealing — manufactured without asbestos, this gasket provides a reliable exhaust seal at the muffler joint on GD-series diesel engines, resisting combustion gases and exhaust heat
- Genuine Honda OEM Part — sourced directly from Honda, part number 18381-ZG3-800 is built to the exact fit and material tolerances required by these diesel engines — no guesswork on compatibility
- GD320 and GD410 Fitment — engineered specifically for Honda's horizontal shaft diesel engine lineup; always cross-reference your serial number with the fitment table to confirm the correct part for your unit
- Restores Exhaust Integrity — a failed or worn muffler gasket allows exhaust gases to escape at the joint, causing noise, soot buildup, and potential damage to surrounding components; replacing it restores a clean, contained exhaust path
The muffler gasket forms a gas-tight seal between the muffler and the exhaust port on the engine cylinder head. On a diesel engine like the GD320 or GD410, exhaust gases exit at high temperature and pressure, and this gasket is what prevents them from leaking at that joint. When the gasket degrades — through heat cycling, compression, or age — exhaust leaks develop, leading to elevated noise levels, carbon deposits around the exhaust outlet, and reduced backpressure that can affect engine performance.
Part Details
| Part Number | 18381-ZG3-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler Gasket (Non-Asbestos) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Diesel Engine | GD320 | 1005010-9999999 |
| Horizontal Shaft Diesel Engine | GD410 | 1009312-9999999 |
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.
