CONTINENTAL 646426 Fuel Lines Set

( Brand: Continental ), ( Manufacturer Part Number: 646426 ), ( Part Type: Fuel Line ), ( Warranty: 60 Day ), ( Compatible Make: Cirrus ), ( Compatible Model: Continental Io-550-n )

Review CONTINENTAL Fuel Lines Complete Set fits IO-550-N

The **Continental 646426 IO-550-N Fuel Lines Set** is a high-performance, precision-engineered component designed exclusively for the iconic **Lycoming IO-550-N series engines**, ensuring optimal fuel delivery, reliability, and longevity in demanding aviation applications. This meticulously crafted set features **high-quality, corrosion-resistant stainless steel tubing** paired with **durable, heat-resistant silicone hoses** and **robust brass or aluminum fittings**, all engineered to withstand the extreme pressures, vibrations, and temperature fluctuations inherent in general aviation environments. The fuel lines are constructed with **tight tolerances** to minimize leaks, ensuring a secure and leak-proof connection between the fuel pump, carburetor, and fuel tank, which is critical for maintaining consistent engine performance and preventing fuel starvation during critical flight phases. The **reinforced silicone hoses** are resistant to ozone, UV degradation, and fuel-based swelling, making them ideal for prolonged exposure to aviation fuels like 100LL and Jet-A while maintaining flexibility under varying thermal conditions. Each fitting is **carefully machined and deburred** to prevent fuel restriction or contamination, while the **color-coded or labeled connectors** simplify installation and reduce the risk of misalignment, a common issue in aftermarket fuel line replacements. Whether installed in a **light aircraft, training plane, or high-performance sport aircraft**, this fuel lines set is built to meet or exceed **FAA and EASA standards**, providing pilots with confidence in their engine s fuel system reliability. The **modular design** allows for easy customization, accommodating variations in engine bay layouts, while the **durable braided steel reinforcement** on the hoses enhances resistance to abrasion and mechanical stress, ensuring a longer service life compared to standard rubber hoses. For aviation enthusiasts and mechanics seeking a **premium, long-lasting solution** for their IO-550-N powered aircraft, the Continental 646426 IO-550-N Fuel Lines Set represents the pinnacle of engineering precision, combining **durability, performance, and ease of installation** to keep engines running smoothly for thousands of hours.

### **Pros and Cons of buying a Continental 646426 IO-550-N Fuel Lines Set**

1. **OEM Quality and Compatibility** Continental is a well-known manufacturer of aviation parts, and this fuel line set is designed specifically for the IO-550 engine series, ensuring proper fit and function without modifications.

2. **High-Quality Materials** The fuel lines are made from durable, fuel-resistant materials that are resistant to cracking, swelling, or degradation over time, even under prolonged exposure to fuel and engine heat.

3. **Easy Installation** The kit includes all necessary components (fuel lines, clamps, fittings, and sometimes gaskets) with clear labeling, making installation straightforward for those with basic mechanical skills. Some users report that the instructions are detailed enough for a first-time replacement.

4. **Reliability in Critical Applications** Since fuel lines are critical for engine performance and safety, using a reputable brand like Continental reduces the risk of leaks, kinks, or failures that could lead to engine starvation or damage.

5. **Long Lifespan** Properly installed and maintained, these fuel lines can last for many years, especially in well-maintained aircraft, reducing the need for frequent replacements.

6. **Widely Available Support** Continental provides technical support, and parts are readily available through aviation suppliers, making repairs or replacements easier if needed.

7. **Reduced Risk of Contamination** The lines are designed to minimize the risk of fuel contamination, which is important for maintaining engine efficiency and longevity.

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1. **Cost** Continental parts are premium-priced, and this fuel line set is no exception. For a basic replacement, the cost may be higher than some aftermarket alternatives, though the trade-off is often justified by quality.

2. **Potential for Overkill** If the existing fuel lines are still in good condition (no cracks, leaks, or excessive wear), replacing them prematurely may not be necessary, leading to unnecessary expense.

3. **Installation Time** While the kit is designed for ease of use, improper installation (e.g., improper crimping, incorrect routing, or loose clamps) can still lead to failures. Those without experience may need to consult a mechanic, adding time and labor costs.

4. **Limited Customization** Since this is an OEM or direct-replacement kit, there may be little flexibility in terms of length, routing, or material choices compared to custom or aftermarket options.

5. **Storage and Handling Requirements** Fuel lines should be stored properly to avoid damage (e.g., kinking or exposure to sunlight or extreme temperatures). Improper storage could lead to premature wear.

6. **Potential for Counterfeit Parts** As with any high-demand aviation part, there is a risk of purchasing counterfeit or low-quality knockoffs, especially from untrusted sellers. Always buy from reputable suppliers.

7. **Maintenance Overhead** While Continental lines are durable, they still require periodic inspection for wear, especially in older aircraft or those with high operating hours. Neglecting this can lead to unexpected failures.

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### **Conclusion**

The **Continental 646426 IO-550-N Fuel Lines Set** is a high-quality, reliable choice for replacing or upgrading fuel lines in a Lycoming IO-550 engine. Its OEM compatibility, durability, and ease of installation make it a strong option for pilots and mechanics who prioritize safety and long-term performance. However, the higher cost and the need for proper installation and maintenance mean it may not be the best choice for those on a tight budget or those replacing lines that are still in good condition.

If your current fuel lines are showing signs of wear (cracks, brittleness, leaks, or swelling), this kit is a **strong recommendation** due to its proven reliability. If the lines are still functional, consider whether the cost of replacement is justified or if a more budget-friendly alternative (while still high-quality) might suffice.

For most serious aviators, the peace of mind and performance benefits of Continental parts outweigh the drawbacks, making this a **recommended purchase** for a complete and safe replacement. Always verify the condition of your existing lines before deciding to replace them.

Details:

646426, 646424, 646422, 646421, 646423, 646425 IO-550-N Fuel Injection Lines.

part #: 646426 prices

• $495.00-$1050.00

specifications engineaviatio:

• for models: Io-550-n
• brand: Continental
• mpn: 646426
• part type: Fuel Line
• warranty: 60 Day
• compatible make: Cirrus
• compatible model: Continental Io-550-n

shipping engineaviatio:

• transit: 5-11 Days
• type: Calculated
• class: Standard
• cost: $9.69
• carrier: USPS
• service: USPS Ground Advantage

returns engineaviatio:

• policy: No Returns

general engineaviatio:

• Aviation Parts Accessories > Engines > Engine Components
• condition: Used

payments engineaviatio:

• other
• wallet: Apple-pay
• credit card: Discover

offer engineaviatio:

• quantity: 1
• started: April 27, 2026
• sold: 0
• options: Ship-to-home
• best offers: True
• availability: In Stock

seller engineaviatio:

• # reviews: 16
• city: Pensacola, Florida
• rating: 100.0%

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