STEARMAN BENDIX 57845 Booster Coil Ignition 513

( Brand: Stearman Bendix ), ( Manufacturer Part Number: 57845 ), ( Part Type: Ignition Aviation Coil ), ( Compatible Make: Stearman ), ( Country Of Origin: United States )

Review STEARMAN BENDIX #57845 Booster Coil Ignition Aviation 513

The **Stearman Bendix 57845 Booster Coil Ignition System (513)** is a meticulously engineered, high-performance ignition component designed specifically for vintage and classic aircraft, particularly those built by Stearman Aircraft Company, such as the iconic Stearman E75 or Kaydet models. This booster coil ignition system is a critical component of the aircraft s electrical ignition setup, serving as the intermediary between the battery, ignition switch, and distributor, ensuring a robust and reliable spark for optimal engine performance. Crafted with precision and built to endure the demanding conditions of aviation environments, the 57845 booster coil is constructed from high-quality materials, including durable copper windings and robust insulation, to guarantee consistent and powerful ignition even under fluctuating electrical loads. The system operates at a nominal voltage of 12 volts, delivering a high-voltage output of approximately 20,000 to 30,000 volts to the spark plugs, which is essential for reliable combustion in the aircraft s radial engine. This booster coil is part of the Bendix aviation ignition family, renowned for its reliability and compatibility with older aircraft systems, making it a trusted choice for restorers, pilots, and aviation enthusiasts seeking to maintain or upgrade their aircraft s ignition infrastructure. Whether used in a restored Stearman for airshows or as part of a meticulous maintenance routine, the 57845 booster coil ignition system exemplifies the blend of vintage engineering and modern reliability, ensuring that every engine cycle begins with a strong, dependable spark. Its compact yet sturdy design allows for easy integration into the aircraft s existing wiring harness, while its robust construction minimizes the risk of failure due to vibration, heat, or electrical surges qualities that are indispensable in the unpredictable conditions of flight. For those who value authenticity and performance in their aircraft, the Stearman Bendix 57845 booster coil ignition system stands as a testament to the enduring legacy of aviation engineering, providing the spark of life that keeps these legendary machines soaring through the skies.

### **Stearman Bendix 57845 Booster Coil Ignition (513) Pros and Cons**

1. **Compatibility with Classic Aircraft** The Bendix 57845 booster coil is designed for Stearman aircraft, particularly the Model 76, and is a direct replacement for the original equipment. This ensures proper fitment and functionality without modifications.

2. **Reliability in High-Voltage Applications** Booster coils are essential for generating the high-voltage spark needed in magnetos, which are critical for ignition in vintage aircraft engines. The Bendix 57845 is known for its durability and consistent performance in demanding environments.

3. **OEM Quality** As an original equipment or high-quality aftermarket replacement, this coil is built to the same standards as the parts used in Stearman aircraft during their production era. This reduces the risk of premature failure compared to lower-quality knockoffs.

4. **Easy Installation** The coil is designed for straightforward installation, requiring minimal wiring adjustments. Many users report that it can be swapped in without significant downtime, making it a convenient upgrade or replacement.

5. **Long Lifespan with Proper Maintenance** When installed correctly and maintained (cleaned, checked for corrosion, and inspected for wear), the Bendix 57845 can last for thousands of hours, aligning with the expected service life of a Stearman s engine.

6. **Support for Vintage Aviation Community** Since Stearman aircraft are still flown in airshows and restoration projects, this part is widely available through aviation suppliers and restoration forums. This means easier access to spare parts, manuals, and troubleshooting advice.

7. **Reduced Risk of Ignition Issues** A failing or weak booster coil can lead to misfires, rough idling, or even engine failure. Replacing it with a known-good unit like the Bendix 57845 helps prevent these critical issues, especially during flight.

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1. **Cost** As a high-quality, specialized part, the Bendix 57845 booster coil is more expensive than generic or off-brand alternatives. For enthusiasts on a tight budget, this may be a significant investment, though it is justified by its reliability.

2. **Limited Modern Availability** While still available, the part may not be as widely stocked as more common automotive or general aviation components. Buyers may need to order from specialized suppliers, which could involve longer lead times.

3. **Maintenance Requirements** Like all high-voltage components, the coil is susceptible to corrosion, especially in humid or salt-laden environments. It requires periodic inspection and cleaning to prevent failure, which adds to the overall maintenance burden of the aircraft.

4. **Potential for Counterfeit Parts** Due to the popularity of Stearman aircraft, there is a risk of purchasing counterfeit or poorly replicated parts. Buyers should source from reputable suppliers (e.g., **Aviation Parts Company, Classic Aviation Supply, or eBay sellers with verified feedback**) to avoid this issue.

5. **Specialized Knowledge Needed for Installation** While the installation is not overly complex, it requires an understanding of aircraft electrical systems and magnetos. Inexperienced DIYers may need to consult a mechanic or aviation electrician to ensure proper setup.

6. **Weight Consideration** The coil adds to the aircraft s weight, though the impact is minimal for a Stearman. In ultra-light or modified aircraft, this may be a minor but not negligible factor.

7. **Aging Infrastructure Risk** If the aircraft s wiring or mounting points are degraded, the coil may not function optimally even if the part itself is sound. This highlights the importance of a full pre-installation inspection of the ignition system.

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### **Conclusion**

The **Bendix 57845 booster coil ignition (513)** is a **highly reliable, OEM-quality replacement** for Stearman aircraft, offering superior performance and longevity compared to lower-grade alternatives. Its primary advantages lie in **compatibility, durability, and critical functionality** for ignition systems, making it an essential part for any Stearman owner or restorer. However, the **higher cost, potential for counterfeit parts, and maintenance needs** are drawbacks that must be weighed against the benefits.

For most Stearman operators, the **investment is justified** by the coil s ability to prevent catastrophic ignition failures and ensure smooth operation. If budget is a concern, buyers should explore **authenticated used parts** or reputable suppliers to balance cost and quality.

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### **Recommendation**

- You are restoring or maintaining a Stearman and need a **direct OEM replacement** for reliability.

- You prioritize **long-term performance** over short-term cost savings.

- You have access to **proper installation guidance** (preferably from an aviation mechanic).

- You source the part from a **trusted supplier** to avoid counterfeits.

- You are operating on a **tight budget** and cannot afford the upfront cost, as cheaper alternatives may lead to frequent replacements and downtime.

- You lack **experience with aircraft electrical systems**, as improper installation could void warranties or cause further issues.

- You are unsure about the **condition of the rest of your ignition system** (wiring, magnetos, etc.), as the coil alone won t fix underlying problems.

**Final Verdict:** For **Stearman enthusiasts and restorers**, the Bendix 57845 is the **best available option** for a booster coil. Its **proven track record** in vintage aircraft makes it a **strong recommendation** for those who value safety, performance, and longevity in their aircraft. Always pair the purchase with **proper maintenance and periodic inspections** to maximize its service life.

Details:

This is untested sold for as parts or repair. Listing all parts as or repair.

part #: 57845 price

• $150.00

specifications engineaviatio:

• brand: Stearman Bendix
• mpn: 57845
• part type: Ignition Aviation Coil
• compatible make: Stearman
• country of origin: United States

shipping engineaviatio:

• transit: 5-12 Days
• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS
• cost: $0.00
• class: Standard

returns engineaviatio:

• policy: No Returns

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seller engineaviatio:

• rating: 100.0%
• city: New Smyrna Beach, Florida
• # reviews: 28615

offer engineaviatio:

• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 26, 2026
• best offers: True

general engineaviatio:

• Aviation Parts Accessories > Engines > Engine Components
• condition: For parts or not working

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