The Honda 18333-758-801 Exhaust Pipe Gasket is a genuine OEM replacement designed for GX640 horizontal shaft engines, H4013, H4514, and H4518 lawn tractors, and the H5518 multi-purpose tractor. As an authentic Honda part, this gasket is manufactured to the same specifications as the original, ensuring a proper seal at the exhaust pipe joint. Confirm your machine's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks and fitment can vary within a model range.
Key Features
- OEM Exhaust Sealing — manufactured by Honda to seal the exhaust pipe joint correctly, maintaining the combustion gas path and preventing exhaust leaks that can cause performance loss and excessive noise
- Direct OEM Replacement — replaces the original gasket with no modification required, restoring the exhaust connection on GX640 engines and H-series tractors to as-built condition
- Broad Fitment — covers GX640 horizontal shaft engines, H4013, H4514, and H4518 lawn tractors, and the H5518 multi-purpose tractor; check your serial number against the fitment table to confirm the correct part for your unit
- Leak Prevention — a compromised exhaust pipe gasket allows hot exhaust gases to escape at the joint, producing audible ticking, reducing back-pressure, and exposing nearby components to heat they are not designed to handle
The Exhaust Pipe Gasket sits at the junction between the exhaust pipe and the engine's exhaust port, forming a gas-tight seal that keeps combustion byproducts routed through the exhaust system. When this gasket deteriorates or burns through, exhaust gases escape at the joint rather than exiting through the muffler — a failure that shows up as a metallic ticking or popping noise under load and can accelerate heat damage to surrounding components. Replacing a worn gasket with a genuine Honda part restores a proper seal and keeps the exhaust system functioning as designed.
Part Details
| Part Number | 18333-758-801 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Exhaust Pipe Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX640 | All |
| Lawn Tractor | H4013, H4514, H4518 | All |
| Multi-Purpose Tractor | H5518 | 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.
