The Honda 18381-ZA0-800 Muffler Gasket is a genuine OEM component designed for a wide range of Honda engines and power equipment, including G300 and GX360 horizontal shaft engines, E2500, EL5000, ES6500, and EX5500 generators, EV4010, EV6010, EVD4010, and EVM40 RV generators, FR500 and FR700 tillers, H4013, H4514, H4518, HT3810, HT3813, and HT4213 lawn tractors, H5013 and RT5000 multi-purpose tractors, the H6522 compact tractor, HS70 two-stage snow blowers, and the WT30 water pump. As a genuine Honda part, this Muffler Gasket is manufactured to the same specifications as the original, ensuring a proper seal between the muffler and the exhaust port. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks across this broad range of equipment.
Key Features
- Genuine OEM Exhaust Sealing — manufactured by Honda to seal the muffler-to-exhaust-port joint correctly, maintaining proper exhaust gas containment across the full service life of the gasket.
- Direct OEM Replacement — engineered to match the original gasket dimensions for part number 18381-ZA0-800, dropping in without modification.
- Broad Equipment Coverage — fits Honda engines, generators, RV generators, tillers, lawn and multi-purpose tractors, a compact tractor, two-stage snow blowers, and water pumps; verify your specific model and serial number against the fitment table.
- Exhaust Integrity — a failed or deteriorated muffler gasket allows exhaust gases to escape at the joint, causing noise, carbon buildup around the exhaust, and potential heat damage to surrounding components.
A muffler gasket forms the sealing interface between the exhaust outlet of the engine and the muffler inlet. It compresses under the clamping force of the muffler fasteners to prevent hot exhaust gases from leaking at the joint. When this gasket wears out, burns through, or loses its ability to seal, exhaust gases escape around the connection — producing a loud, ticking exhaust note, depositing soot on the engine casing, and exposing nearby components to elevated heat. Replacing a compromised muffler gasket restores a clean, tight exhaust path and returns the equipment to normal operating sound levels.
Part Details
| Part Number | 18381-ZA0-800 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Muffler Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | H6522 | All |
| Generator | E2500, EL5000, ES6500, EX5500 | All |
| Horizontal Shaft Engine | G300, GX360 | All |
| Lawn Tractor | HT3813, HT4213 | 5004598-9999999 |
| Lawn Tractor | H4013, H4514, H4518, HT3810 | All |
| Multi-Purpose Tractor | H5013, RT5000 | All |
| RV Generator | EV4010, EV6010, EVD4010, EVM40 | All |
| Tiller | FR500, FR700 | All |
| Two-Stage Snow Blower | HS70 | All |
| Water Pump | WT30 | 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.
