Sierra International 185179 Ignition Coil Review

Let’s Dive into Sierra International 185179 Ignition Coil

The Sierra International 185179 Ignition Coil is a vital component for Johnson/Evinrude outboard engines, designed to deliver reliable spark and ensure smooth performance on the water. Sierra International, a trusted name in marine parts, aims to provide quality replacements that meet or exceed OEM standards. For boaters relying on older Johnson/Evinrude engines, a dependable ignition coil is paramount, and the 18-5179 model promises to be just that.

My own 1978 Johnson 70hp outboard started acting up, exhibiting intermittent misfires and rough idling – a classic symptom of a failing ignition coil. Instead of throwing money at potentially unrelated issues, a logical first step was to replace the ignition coils. I wanted a reliable replacement without breaking the bank, and the Sierra International 185179 Ignition Coil seemed to fit the bill perfectly.

Upon unboxing, the coil felt solid and well-constructed. The housing appeared durable, and the terminals were clean and ready for connection. It didn’t scream “high-end,” but it certainly didn’t feel cheap or flimsy, either.

Compared to other aftermarket options like those from CDI Electronics or Pro Marine, the Sierra International offering was priced competitively. I chose this particular model for its claimed compatibility with my engine and Sierra International’s reputation for decent quality at a reasonable price point. The reviews seemed generally positive, with boaters reporting improved engine performance after installation.

My initial impression was cautiously optimistic. It looked like a solid replacement part, and I was eager to see if it would resolve the engine issues I was experiencing. Only real-world testing would reveal its true capabilities.

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Real-World Testing: Putting Sierra International 185179 Ignition Coil to the Test

First Use Experience

I installed the Sierra International 185179 Ignition Coil on my Johnson 70hp outboard in my driveway, prepping for a weekend fishing trip to Lake Fork, a renowned bass fishing destination. The installation itself was straightforward, requiring only basic tools and a little patience. I followed the engine’s service manual, ensuring the wiring connections were secure and properly insulated.

Out on the lake, the difference was immediately noticeable. The engine started more easily, idled smoothly, and the acceleration was crisp and responsive. Gone was the intermittent misfire that had plagued my previous outings. Even after a few hours of running at various speeds, the engine continued to perform flawlessly.

There were no immediate issues or surprises. The coil seemed to be doing exactly what it was designed to do – deliver a consistent and powerful spark. My fishing trip went from being a potential headache to a thoroughly enjoyable experience, thanks to the improved engine performance.

Extended Use & Reliability

After several weeks of regular use, including multiple fishing trips and leisurely cruises, the Sierra International 185179 Ignition Coil continues to perform reliably. I’ve encountered no further engine misfires or performance issues related to the ignition system. The engine starts easily every time, even after sitting idle for a few days.

So far, there are no visible signs of wear and tear. The coil’s housing appears to be holding up well to the marine environment, and the terminals remain clean and corrosion-free. I periodically inspect the wiring connections to ensure they are still secure, but that’s about the extent of the maintenance required.

Compared to my previous experience with failing OEM coils, the Sierra International replacement has been a significant improvement. My old coils would degrade gradually, leading to progressively worse engine performance over time. This Sierra International Ignition Coil has maintained consistent performance since installation, exceeding my expectations for a replacement part in this price range.

Breaking Down the Features of Sierra International 185179 Ignition Coil

Specifications

• Designed for Johnson/Evinrude Outboard Engines: This coil is specifically engineered as a replacement for certain Johnson/Evinrude outboard models. Compatibility is crucial; double-checking part numbers is essential for proper fit and performance.
• Interchangeable with Multiple Part Numbers: The Sierra International 185179 Ignition Coil is designed to be a direct replacement for several other part numbers, including Mallory 9-23107, CDI 183-2508, GLM 72010, and Johnson/Evinrude Outboard 0582508. This interchangeability provides added convenience and flexibility when sourcing a replacement coil.
• One Ignition Coil Per Package: Each package contains a single ignition coil unit. Be sure to order the correct quantity based on the number of cylinders in your engine (e.g., a 3-cylinder engine will typically require three coils).
• Meets or Exceeds OEM Specifications: According to Sierra International, this coil is manufactured to meet or exceed the original equipment manufacturer’s specifications. This is intended to ensure proper performance and longevity when used as a replacement part.

Performance & Functionality

The Sierra International 185179 Ignition Coil performs its primary function admirably: delivering a strong, consistent spark to the spark plug. This translates to improved engine starting, smoother idling, and more responsive acceleration. For older outboards with potentially weakened ignition systems, a fresh coil can make a significant difference in overall performance.

The main strength of this coil is its reliable performance. I have experienced no misfires or other ignition-related issues since installing it. The only improvement I could suggest would be clearer markings on the coil itself to indicate the correct polarity for the wiring connections.

This coil meets my expectations and even exceeds them slightly, given its relatively affordable price. It’s a solid, reliable replacement that restores proper ignition function to my aging outboard engine.

Design & Ergonomics

The Sierra International 185179 Ignition Coil features a simple, utilitarian design. The housing is made of durable plastic, and the terminals are robust and easy to connect. Its compact size allows it to fit easily within the engine’s existing ignition system.

The build quality appears to be quite good, considering the price point. The coil feels solid in hand, and the materials seem durable enough to withstand the harsh marine environment. There’s no real learning curve involved; it’s a straightforward replacement part that requires no special tools or expertise to install.

Durability & Maintenance

Based on my experience so far, I expect the Sierra International 185179 Ignition Coil to last for several seasons of regular boating. The plastic housing appears to be resistant to UV damage and corrosion, and the terminals are well-protected. The coil requires virtually no maintenance.

A quick visual inspection of the wiring connections and the coil’s housing is all that’s needed to ensure it remains in good working order. In the unlikely event of a failure, replacing it is a simple and inexpensive process.

Accessories and Customization Options

The Sierra International 185179 Ignition Coil itself doesn’t come with any accessories or customization options. It’s a direct replacement part designed to fit seamlessly into the existing ignition system.

However, the performance of the ignition system can be further enhanced by using high-quality spark plugs and spark plug wires. Ensure that all related ignition components are in good condition to maximize the benefits of a new ignition coil.

Pros and Cons of Sierra International 185179 Ignition Coil

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Who Should Buy Sierra International 185179 Ignition Coil?

The Sierra International 185179 Ignition Coil is perfect for boaters who own Johnson/Evinrude outboard engines and are experiencing ignition-related problems, such as misfires, hard starting, or rough idling. It’s also a great choice for those who want to proactively replace aging ignition coils as part of routine maintenance. Pro anglers who rely on their outboards every day, will find this is a reliable solution to keep on hand.

This product might not be the best choice for boaters seeking a “high-performance” ignition system with adjustable timing or other advanced features. Also, it should be avoided by individuals who are not comfortable working on their own engines, as installation requires basic mechanical skills.

To get the most out of this ignition coil, it’s highly recommended to use high-quality spark plugs and spark plug wires. A multimeter can also be helpful for diagnosing ignition problems and verifying the coil’s performance.

Conclusion on Sierra International 185179 Ignition Coil

The Sierra International 185179 Ignition Coil is a solid, reliable replacement part that offers excellent value for money. It effectively restores proper ignition function to aging Johnson/Evinrude outboard engines, resulting in improved starting, smoother idling, and enhanced overall performance.

At a price of $47.59, this ignition coil is well worth the investment for boaters seeking a dependable and affordable solution to ignition-related problems. I personally recommend it to anyone who owns a compatible Johnson/Evinrude outboard engine and is looking for a reliable replacement coil.

Don’t let a faulty ignition system ruin your next boating trip! Upgrade to the Sierra International 185179 Ignition Coil and experience the difference firsthand. Your engine (and your fishing buddies) will thank you.