The Honda 18333-ZB4-801 Exhaust Pipe Gasket is a genuine OEM component designed for a wide range of Honda horizontal shaft engines, vertical shaft engines, generators, inverter generators, and welder generators. As a direct OEM replacement, this gasket is manufactured to Honda's exact specifications, delivering the sealing performance required for dependable exhaust system operation. Fitment spans an extensive lineup, including GX160, GX240, GX270, GX340, GX390, GX630, GX660, and GX690 horizontal shaft engines, GXV270 vertical shaft engines, EB and EM generator families, and EW-series welder generators — confirm your model and serial number against the fitment table before ordering. Because Honda supersedes parts at specific serial number breaks, verifying part number 18333-ZB4-801 against your unit's serial number ensures you receive the correct gasket for your application.
Key Features
- Genuine OEM Sealing Performance — manufactured by Honda to deliver the clamping integrity and gas-tight seal the exhaust pipe joint demands, preventing hot exhaust leaks that can reduce power and create hazardous operating conditions.
- Broad Compatibility Across Honda Lineups — fits GX-series horizontal shaft engines, the GXV270 vertical shaft engine, EB and EM conventional generators, EB7000 and EM7000 inverter generators, and EW-series welder generators, including the EW140, EW170, and EW171.
- Drop-In Replacement — engineered to match the original exhaust pipe flange dimensions, so this gasket seats correctly without modification.
- Serial Number Verification Recommended — Honda updates part numbers at production serial breaks; check your machine's serial number against the fitment table to confirm this part is correct for your specific unit.
- Restore Exhaust Integrity — a degraded or blown exhaust gasket allows combustion gases to escape at the joint, reducing back-pressure, increasing noise, and accelerating wear on surrounding components; replacing it promptly restores proper exhaust flow.
The Exhaust Pipe Gasket seals the joint between the exhaust pipe and the engine's exhaust port, preventing hot combustion gases from escaping between those two mating surfaces. A secure seal at this point maintains proper exhaust flow and back-pressure, which directly affects how efficiently the engine expels spent gases and how quietly it runs. When this gasket wears out, burns through, or loses its clamping retention, exhaust gases leak at the flange — causing increased noise, a noticeable loss of power, and potential heat damage to nearby components — making timely replacement essential to keeping the engine and the equipment it powers running as intended.
Part Details
| Part Number | 18333-ZB4-801 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Pipe Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EB3000, EB3500, EB3800, EB4000, EB5000, EB6500, EB10000, EM3000, EM3500, EM3800, EM4000, EM5000, EM6000, EM6500, EMS4000, EMS4500 | All |
| Horizontal Shaft Engine | GX160, GX240, GX270, GX340, GX390, GX630, GX660, GX690 | All |
| Inverter Generator | EB7000, EM7000 | 1014174-9999999 |
| Vertical Shaft Engine | GXV270 | All |
| Welder Generator | EW140, EW170, EW171 | 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.
