The Honda 15721-889-010 Breather Tube is a genuine OEM replacement designed for G300 horizontal shaft engines and HS70 two-stage snow blowers. As a direct Honda OEM part, it is built to the same specification as the original component, ensuring a correct fit without adaptation. This part fits both an engine and a snow blower platform, so confirm your machine model and serial number against the fitment table before ordering.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this tube meets the exact routing, diameter, and connection geometry of the original, so it seats properly without trimming or forcing.
- Cross-Platform Fitment — covers G300 horizontal shaft engines and HS70 two-stage snow blowers; check your serial number against the fitment table to confirm the correct application for your unit.
- Crankcase Pressure Management — a correctly functioning breather tube keeps the crankcase venting properly; a cracked or blocked tube causes oil leaks, excess pressure buildup, and accelerated seal wear.
The breather tube routes crankcase vapors away from the engine's internal cavity as part of the positive crankcase ventilation system. By allowing pressure generated during combustion blow-by to escape in a controlled path, it prevents pressure from forcing oil past gaskets and seals. When the tube cracks, collapses, or becomes clogged, the crankcase can pressurize, leading to oil leaks and contamination that shorten engine life.
Part Details
| Part Number | 15721-889-010 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Breather Tube |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Horizontal Shaft Engine | G300 | All |
| Two-Stage Snow Blower | HS70 | 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.
