The Honda 15721-Z2E-010 Breather Tube is a genuine OEM component designed for GX440 horizontal shaft engines. Sourced directly from Honda, this part meets the same standards as the original installed at the factory, ensuring a correct fit and proper function within the crankcase ventilation system. Honda supersedes parts at serial number breaks on the GX440, so verify your engine's serial number against the fitment table before ordering.
Key Features
- Genuine Honda OEM — the exact part Honda specifies for the GX440, manufactured to Honda's own design and tolerances rather than a third-party approximation.
- Correct Ventilation Path — the Breather Tube routes crankcase blow-by vapors to the air cleaner side of the intake, keeping the system closed and preventing oil mist from venting to atmosphere.
- Direct OEM Replacement — matches the routing, diameter, and end fittings of the original tube, so installation requires no trimming or adapting.
- Serial Number Verification Recommended — Honda updates part numbers mid-production on the GX440; check your engine's serial number against the compatibility table to confirm this is the correct supersession for your unit.
The Breather Tube is part of the crankcase ventilation system on the GX440 engine. Its job is to carry blow-by gases — combustion vapors that slip past the piston rings into the crankcase — back into the air intake so they are burned rather than released into the air. When the tube cracks, collapses, or pulls free from its fittings, the engine loses that sealed circuit: oil mist escapes, the air-fuel mixture can be disrupted, and excessive crankcase pressure can accelerate oil consumption and seal wear.
Part Details
| Part Number | 15721-Z2E-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Breather Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | GX440 | 1002578-9999999 |
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.
