YAMAHA 5XC-11166-00-00 Cylinder Head Crankcase Breather Vent Tube Hose Pipe

( Manufacturer Part Number: 5XC-11166-00-00 ), ( Part Type: Pipe ), ( Country Of Origin: Japan )

Review YAMAHA Oem Cylinder Head Crankcase Breather Vent Tube Hose Pipe fits YZ250F 2007–2013

The **Yamaha 5XC-11166-00-00 (07-13 YZ250F Cylinder Head Crankcase Breather Vent Tube Hose Pipe)** is a precision-engineered component designed specifically for Yamaha s 2007 through 2013 YZ250F motocross bikes, ensuring optimal performance, reliability, and longevity of the engine s critical breathing system. This high-quality rubber and reinforced hose assembly serves as the vital link between the crankcase and the cylinder head, facilitating the controlled expulsion of blow-by gases while maintaining proper crankcase pressure. Crafted from durable, heat-resistant synthetic rubber with a reinforced braided fiber core, this breather vent tube is engineered to withstand the demanding conditions of high-performance off-road riding, including exposure to extreme temperatures, vibrations, and potential exposure to dirt, oil, and fuel residues. Its seamless design minimizes the risk of leaks or clogs, which can lead to engine damage or reduced power output, while its precise fitment ensures a secure connection to the cylinder head and crankcase ports, preventing air leaks that could compromise engine efficiency. Whether used as an original equipment replacement or an upgrade for enhanced durability, this breather vent tube is an essential part of maintaining the YZ250F s peak performance, ensuring smooth operation and protecting internal engine components from harmful contaminants. Its straightforward installation and compatibility with the specified model range make it a straightforward yet indispensable part for any rider looking to preserve their bike s mechanical integrity.

### **Pros and Cons of buying a Yamaha 5XC-11166-00-00 (07-13 YZ250F Cylinder Head/Crankcase Breather Vent Tube Hose Pipe)**

1. **Direct Fitment** This part is specifically designed for the **2007 2013 Yamaha YZ250F**, ensuring compatibility without modifications.

2. **Prevents Oil Leaks & Contamination** A properly functioning breather system prevents oil from entering the air filter, reducing engine wear and maintaining performance.

3. **Improves Engine Breathing** A clogged or damaged vent tube can restrict airflow, leading to poor engine efficiency. Replacing it ensures optimal breathing.

4. **Prevents Carbon Buildup** A faulty breather can cause unburned fuel and oil to accumulate in the cylinder head, leading to carbon deposits and reduced power.

5. **Easy Installation** The part is a straightforward hose replacement, requiring minimal tools and time (typically under 30 minutes for a DIYer).

6. **Cost-Effective** Compared to full engine rebuilds or air filter replacements, this is a low-cost solution to prevent bigger issues.

7. **OEM Quality** As an original Yamaha part, it meets the manufacturer s standards for durability and performance.

1. **Potential Counterfeit Risk** If purchasing from an untrusted seller (especially online marketplaces), there s a chance of receiving a **fake or low-quality replica**, which may fail prematurely.

2. **Minor Installation Challenges** Some riders report that the hose may be slightly stiff or require careful alignment to avoid leaks, especially if the mounting points are corroded.

3. **Limited Lifespan** While durable, rubber hoses can degrade over time due to heat, oil exposure, or UV damage, requiring eventual replacement.

4. **Not a Permanent Fix for Underlying Issues** If the **PCV system or air filter housing** is damaged, replacing just the vent tube may not fully resolve breathing problems.

5. **Price Sensitivity** Some buyers may find the cost slightly higher than aftermarket alternatives, though OEM parts often justify the price with reliability.

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### **Conclusion**

The **Yamaha 5XC-11166-00-00 breather vent tube** is a **critical yet often overlooked maintenance item** for the YZ250F. Its **primary benefits preventing oil leaks, improving engine efficiency, and avoiding costly carbon buildup far outweigh the minor drawbacks**, such as installation effort or counterfeit risks. For riders who prioritize **long-term engine health and performance**, this is a **highly recommended replacement part**, especially if the original hose shows signs of cracking, hardening, or leaks.

If buying from an unknown source, **verify the seller s reputation** and consider purchasing from **official Yamaha dealers or trusted online retailers** (e.g., Yamaha s website, reputable motorcycle parts stores) to avoid counterfeit parts. For those on a tight budget, **aftermarket alternatives** (like those from **Gasket Pro, Dirt Bike Parts, or OEM replicas**) may offer similar performance at a lower cost, though OEM remains the safest choice for reliability.

- You value **OEM quality and long-term reliability**.

- The original hose is **cracked, stiff, or leaking**.

- You want to **prevent future engine issues** (oil contamination, carbon buildup).

- You re **budget-conscious** and trust a reputable brand.

- The original hose is **only slightly worn** and you want to monitor it further.

- You notice **oil in the air filter**, **reduced power**, or **excessive carbon buildup** these are clear signs the breather system needs attention.

Details:

THIS IS A USED OEM YAMAHA BREATHER PIPE FOR 2007 2013 YZ250F.

part #: 5xc111660000 prices

• $24.70-$24.99

specifications intakefuelmotorcycle:

• for models: Yz250f
• for makes: Yamaha
• for years: 2007-2013
• mpn: 5xc-11166-00-00
• part type: Pipe
• country of origin: Japan

general intakefuelmotorcycle:

• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery
• condition: Used

shipping intakefuelmotorcycle:

• class: Standard
• type: Fixed
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS
• transit: 4-9 Days

offer intakefuelmotorcycle:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: May 10, 2026

seller intakefuelmotorcycle:

• city: Bradford, Ohio
• rating: 99.8%
• # reviews: 6785

payments intakefuelmotorcycle:

• other
• credit card: Diners-club
• wallet: Paypal

returns intakefuelmotorcycle:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

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