The Honda 15721-Z2E-000 Breather Tube is a genuine OEM component designed for the GX440 horizontal shaft engine. As a direct Honda replacement, this part is manufactured to the same standards as the original, ensuring a proper fit with no adaptation required. If your GX440 engine is showing signs of crankcase pressure issues or oil mist contamination, verifying the condition of this tube is a logical first step. Always confirm your engine's serial number against the fitment table before ordering, as Honda updates part numbers at production breaks.
Key Features
- Genuine OEM Sourcing — supplied directly from Honda, meaning this Breather Tube matches the original routing, diameter, and connection geometry exactly as designed for the GX440.
- Crankcase Ventilation Integrity — a correctly functioning breather tube maintains proper pressure balance in the crankcase, preventing oil consumption and contamination of the air intake path.
- Serial Number Verification Recommended — Honda supersedes components at production milestones, so cross-check your GX440 serial number against the fitment table to confirm part number 15721-Z2E-000 is the right revision for your engine.
The breather tube is a key part of the crankcase ventilation system on the GX440 engine. It routes blow-by gases and oil mist from the crankcase back into the air intake to be burned off, rather than venting them to atmosphere. When this tube cracks, collapses, or comes loose, crankcase pressure builds unevenly, oil can be pulled into the combustion chamber, and the engine may smoke, consume oil at an elevated rate, or run rough — making timely replacement essential to keeping the engine performing as intended.
Part Details
| Part Number | 15721-Z2E-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Breather Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX440 | 1000001-1002577 |
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.
