The Honda 15721-ZDX-000 Breather Tube is a genuine OEM component designed for GX700 and GX800 horizontal shaft engines. As a direct Honda OEM part, it meets the same specifications as the original installed at the factory, ensuring a proper fit without rework or adaptation. This breather tube is built specifically for the GX700 and GX800 series, so confirm your engine's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this part matches the original in dimensions and routing, keeping the crankcase ventilation system functioning as designed.
- Exact Fitment for GX700 and GX800 — engineered specifically for these large-displacement horizontal shaft engines; connects to the existing breather circuit without modification.
- Serial Number Matters — Honda updates parts at production breaks, so check your engine's serial number against the fitment data to confirm this is the correct tube for your unit.
- Crankcase Pressure Control — a properly sealed and intact breather tube allows crankcase vapors to vent correctly; a cracked or blocked tube leads to pressure buildup, oil leaks, and increased engine wear.
The breather tube routes blow-by vapors from the crankcase back into the air intake system, preventing pressure from building up inside the engine. This controlled venting keeps oil from being forced past seals and gaskets, which would otherwise result in external leaks and oil consumption. When the tube cracks, collapses, or becomes blocked, the resulting pressure imbalance accelerates seal wear and can cause the engine to consume or expel oil prematurely.
Part Details
| Part Number | 15721-ZDX-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Breather Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX700, GX800 | 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.
