The Best Boat Engine Spark Plugs of 2021

Best Boat Engine Spark Plugs Buying Guide & Reviews of 2020

Every boater would like to sail in a tremendously swift and high-in performance boat. However, do you have any clue what makes a boat agile and helps it deliver the superlative performance? The answer is the varied set of devices attached to it.

One such part is a boat engine spark plug, which improves the power of the boat’s engine. Like any other device, a spark plug also gets weary and needed to be replaced after a certain period. So, you must go for the best sparking plug and the succinct guide follows let’s you make the right decision.

Types of Engine Spark Plug

The availability of spark plugs in several types is one of the major challenges one faces once he sets out to buy one. It can be categorized based on the resistance level, the terminal, tightening mechanism, the gap between the ground electrode and central electrode, and so on. We will see each type so that making a choice becomes a hassle-free affair.

Terminal

The top part of the spark plug is called terminal, and it comes in two styles; push-on style and threaded style.

Push-On Style: It’s easy to install on the engine block since you just need to push it. Besides, this is the most used one.

Threaded Style: A screw that demands a screwdriver to be installed, but you can get it in the market including a screw cap to change it into the push-on style whenever you want.

Tightening Mechanism

To tighten the plug, usually two tools are used; crush washer and taper. A crush washer is the most used one and that brings a tight connection between plug and engine block.

Gap Between Ground Electrode and Central Electrode

In the old days, the gap was manual, meaning we had to adjust everything. But nowadays it comes with a specific gap for different purposes. It determines the spark effect: the bigger the gap, the stronger the spark. The gap will be shown a bit differently. It uses certain numbers called part numbers. For instance, you can see part numbers like 10,11, 12 and, etc. on the plug, and 10 notifies 1mm gap, and 11 does 1.1mm.

How Hot the Engine Spark Plug?

Again, we can categorize the plugs into two; cooler and hotter engine plugs. So, why the difference and how do you identify them? If you’re idling or fishing, the best is hotter, whereas if your boat doesn’t carbonate and you are at high speed, you have to choose a cool one. You can identify this by the codes on the spark plug such as B8, Bkr5, and they are cooler and hotter respectively.

Porcelain Insulator

Porcelain part of the engine spark plug comes insulated, but make sure it has ridges on it. The ridges increase the resistance. You can expect resistance of 5 kilo-ohms, so other electronics in the elbow won’t get affected.

Pricing

The normal price of an engine spark plug is between $2 and $5. Since it needs to be replaced frequently, you don’t need to choose one with a very high price. If a plug is less than $5 and has all the essential quality, you can surely go for that.

Conclusion

Though an engine spark plug is a minimal tool, many specifications need to be considered while using it. Undoubtedly, by considering the aspects this guide mentions, you will easily make the best choice, yet if anything puzzles you, take a tour of our top 10 Engine Spark Plugs and opt for the best one.