The Honda 15721-Z0A-000 Breather Tube is a genuine OEM component designed for GCV520, GCV530, GXV520, and GXV530 vertical shaft engines. As a direct OEM replacement, this breather tube meets Honda's original design intent, ensuring the crankcase ventilation system functions exactly as intended. Confirm fitment by cross-referencing part number 15721-Z0A-000 against your engine's serial number using the fitment table below.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this breather tube matches the original specification for correct routing, sealing, and crankcase ventilation performance.
- Crankcase Ventilation Integrity — a properly functioning breather tube prevents pressure buildup and oil consumption issues; a cracked or collapsed tube can cause oil leaks, rough running, and excessive smoke.
- Broad Vertical-Shaft Fitment — covers GCV520, GCV530, GXV520, and GXV530 vertical shaft engines, spanning both Honda's residential and commercial vertical-shaft engine lines.
- Serial Number Verification Recommended — Honda updates parts at production serial breaks, so always confirm your engine's serial number against the fitment table before ordering.
The breather tube is part of the engine's crankcase ventilation system, which routes blow-by gases from the crankcase back into the intake rather than venting them to the atmosphere. By maintaining a controlled path for these gases, the system keeps crankcase pressure in check and prevents oil from being pushed past seals and gaskets. When the breather tube cracks, collapses, or becomes blocked, crankcase pressure rises, leading to oil leaks, increased oil consumption, and degraded engine performance.
Part Details
| Part Number | 15721-Z0A-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Breather Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Vertical Shaft Engine | GCV520, GCV530, GXV520, GXV530 | 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.
