LYCOMING 74323 Alternator Strut P/n

( Brand: Lycoming ), ( Manufacturer Part Number: 74323 ), ( Part Type: Alternator )

Review LYCOMING Alternator Support Strut P/n

The **Lycoming 74323 Alternator Strut** is a precision-engineered component designed specifically for Lycoming aircraft engines, ensuring optimal alternator positioning and reliable performance under demanding flight conditions. Crafted from high-grade, corrosion-resistant materials, this strut is built to withstand the rigors of high-altitude operations, thermal cycling, and mechanical stress, making it an indispensable part of the alternator mounting assembly. The design incorporates a robust, reinforced structure with carefully machined surfaces to minimize vibration and maintain precise alignment, which is critical for the alternator s efficiency and longevity. Engineered to interface seamlessly with the engine s alternator bracket and mounting points, this strut provides the necessary clearance and flexibility to accommodate thermal expansion while preventing excessive movement that could lead to wear or failure. Its durable construction, often featuring heat-treated steel or aircraft-grade aluminum, ensures resistance to fatigue and deformation, even in extreme environments. Whether installed in a Lycoming O-320, O-360, or IO-540 series engine, this strut plays a vital role in maintaining the alternator s proper function, contributing to the overall reliability and safety of the aircraft s electrical system. Proper installation and periodic inspection are recommended to ensure continued performance and compliance with aviation maintenance standards.

The **Lycoming 74323 Alternator Strut** (part number 74323) is a critical component for Lycoming engine installations, particularly in aircraft with electric starter/generator systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Lycoming 74323 Alternator Strut**

1. **Direct Compatibility**

The 74323 is a factory-approved part designed specifically for Lycoming engines, ensuring a precise fit with the alternator, starter, and engine mount. This reduces the risk of misalignment or improper installation, which can lead to premature wear or failure.

2. **Reliability and Durability**

As an OEM (Original Equipment Manufacturer) or high-quality aftermarket part, the strut is built to withstand the stresses of aircraft operation, including vibration, temperature fluctuations, and cyclic loading. This minimizes the risk of catastrophic failure during critical phases of flight.

3. **Simplified Installation**

The strut is engineered to work seamlessly with the alternator and starter assembly, often requiring minimal additional modifications. This can save time and labor costs compared to custom or non-matching components.

4. **Maintenance and Serviceability**

The 74323 is designed with standard Lycoming service procedures in mind. Technicians familiar with Lycoming engines can easily inspect, replace, or repair it without requiring specialized tools or expertise.

5. **Weight and Balance Considerations**

The strut is part of the engine s structural support system, and using the correct part ensures the engine remains properly balanced and aligned. This is crucial for performance, fuel efficiency, and safety.

6. **Warranty and Support**

Purchasing from a reputable supplier (such as Lycoming, Aviall, or a trusted aircraft parts dealer) often includes warranties or return policies. This provides peace of mind in case of defects or issues post-installation.

7. **Long-Term Cost Savings**

While the upfront cost may be higher than generic alternatives, the reliability of the 74323 reduces the likelihood of costly repairs or downtime associated with improper or inferior components.

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### **Cons of buying a Lycoming 74323 Alternator Strut**

1. **Higher Cost**

The 74323 is a specialized part, and as such, it is typically more expensive than generic or aftermarket alternatives. For budget-conscious buyers, this can be a significant drawback, especially if the part is only needed for a single engine.

2. **Limited Availability**

Depending on the supplier, stock levels for the 74323 may be inconsistent. In some cases, ordering may require lead times, which can delay maintenance or installation projects.

3. **Potential for Overkill**

If the aircraft s alternator or starter system is not heavily stressed (e.g., in a rarely flown aircraft), the robust design of the 74323 may be more than necessary. In such cases, a slightly less expensive but still high-quality alternative might suffice.

4. **Weight Considerations**

While the strut is designed for safety, it contributes to the overall weight of the engine. For very light aircraft or those optimized for weight savings, this may be a minor but notable factor.

5. **Mismatch with Modified Systems**

If the aircraft has undergone modifications (e.g., upgraded alternators, custom mounts, or hybrid electric systems), the 74323 may not be fully compatible without additional adjustments. This could require engineering work or custom fabrication.

6. **Counterfeit or Low-Quality Parts Risk**

Purchasing from unvetted suppliers increases the risk of receiving counterfeit or substandard parts. Always buy from authorized dealers or reputable aircraft parts distributors to avoid this issue.

7. **Replacement Complexity**

Removing and replacing the strut may require disassembling parts of the engine or electrical system. For inexperienced mechanics, this could introduce additional risks or complications during the process.

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### **Conclusion**

The **Lycoming 74323 Alternator Strut** is a high-quality, reliable component that offers superior compatibility, durability, and safety for Lycoming-powered aircraft. Its advantages far outweigh the drawbacks for most owners, particularly those prioritizing safety, longevity, and ease of maintenance. However, the higher cost and potential overkill for low-hour or modified systems may make it less ideal for every situation.

For standard Lycoming installations especially in production aircraft, flight schools, or commercial operations the 74323 is the **best choice**. In contrast, owners of heavily modified or custom-built aircraft may need to weigh the benefits against alternatives or consult with an engineer to ensure optimal fit and function.

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### **Recommendation**

Purchase the **Lycoming 74323 Alternator Strut** from an **authorized Lycoming dealer or reputable aircraft parts distributor** (e.g., Aviall, Aircraft Spruce, or a local Lycoming-approved shop). This ensures authenticity, warranty coverage, and proper support. The investment in quality will likely save money and headaches in the long run.

- **Verify compatibility** with your specific engine and system modifications. Consult the aircraft or engine manuals or an FAA-certified mechanic.

- **Explore aftermarket alternatives** from trusted manufacturers (e.g., **BendixKing, Hartzell, or other Lycoming-approved suppliers**) that offer similar performance at a lower cost. Ensure these parts meet FAA standards and have proper certifications.

- **Consider refurbished or remanufactured parts** if available, as these can offer cost savings without sacrificing reliability.

- Never compromise on critical components like the alternator strut. A failed strut could lead to alternator misalignment, starter failure, or even engine separation all of which pose severe safety risks.

- If unsure about compatibility or installation, **consult an FAA-certified Lycoming specialist** before purchasing or installing the part.

- Regularly inspect the strut, alternator, and starter assembly for signs of wear, corrosion, or damage. Follow Lycoming s recommended maintenance intervals.

- Keep records of all installations and replacements to ensure compliance with FAA regulations (e.g., 91.403 for airworthiness).

The **Lycoming 74323 Alternator Strut is the recommended choice** for standard Lycoming engine applications due to its reliability, safety, and compatibility. For non-standard setups, thorough research and professional guidance are essential to avoid compromising performance or safety. Always prioritize quality and certification over cost savings in critical aircraft components.

Details:

Lycoming Alternator Support Strut Part Number 74323.

part #: 74323 prices

• $20.00-$44.80

specifications engineaviatio:

• brand: Lycoming
• mpn: 74323
• part type: Alternator

seller engineaviatio:

• city: Cincinnati, Ohio
• rating: 100.0%
• # reviews: 7954

payments engineaviatio:

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

general engineaviatio:

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

returns engineaviatio:

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

shipping engineaviatio:

• type: Calculated
• carrier: USPS
• transit: 3-9 Days
• service: USPS Ground Advantage
• cost: $8.10
• class: Standard

offer engineaviatio:

• options: Ship-to-home
• started: February 9, 2026
• availability: In Stock
• sold: 0
• quantity: 1

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