The Honda 18331-Z3S-000 Exhaust Pipe A is a genuine OEM component designed for GX440 horizontal shaft engines. As a direct Honda OEM part, it is manufactured to the exact specifications of the original, ensuring a proper connection within the exhaust system without modification. Check your engine's serial number against the fitment table to confirm this is the correct pipe for your production range before ordering.
Key Features
- Genuine Honda OEM Part — sourced directly from Honda, so dimensions, wall thickness, and outlet geometry match the original exhaust routing on the GX440.
- Direct OEM Replacement — replaces the factory pipe on GX440 horizontal shaft engines with no rework required on the exhaust assembly.
- Serial-Range Awareness — Honda supersedes exhaust components at production breaks; verify your engine serial number against the fitment table to ensure part number 18331-Z3S-000 is correct for your unit.
- Exhaust Flow Integrity — a correctly fitted exhaust pipe maintains proper back-pressure and safe gas routing; a cracked, corroded, or ill-fitting pipe can cause power loss and direct exhaust gases toward the operator or surrounding equipment.
The exhaust pipe is the primary conduit that carries spent combustion gases away from the engine's cylinder head and directs them safely out of the exhaust system. On the GX440, this pipe forms a critical link between the exhaust port and the downstream muffler assembly, and its geometry is designed to maintain the correct flow path and back-pressure balance the engine relies on. When this pipe cracks, corrodes, or develops a leak, combustion gases escape before reaching the muffler, resulting in increased noise, reduced power output, and a potential hazard to anyone working near the equipment it powers.
Part Details
| Part Number | 18331-Z3S-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Pipe A |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX440 | 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.
