Generally, your spark plug should be well-balanced on that spectrum, though manufacturers tend to err on the side of coldness because a plug that runs too hot can severely damage your engine, whereas one that runs too cold will simply stop working sooner. Plugs that insulate heat well generally have a higher operating temperature due to the conserved heat, which specifies them as hot plugs. The industry calls these plugs cold plugs. Spark plugs that conduct more heat out of the tip are better at bringing down and maintaining a low temperature. See what size nut it has and follow suit. If you were the first owner and haven’t changed the spark plug before, then the one you have would be company-fitted as an OEM part. The measurements that are ideal for your engine vary depending on the make, model, and year of your vehicle.Ī reliable way to determine what size of replacement spark plug you need is to closely inspect the one that you’ve already got installed. Size plays a key role in determining whether or not a spark plug is right for your car. Your decision mainly comes down to your budget constraints as you can’t go wrong with either of them.Ī great option that splits the difference between the two is a double-platinum spark plug which is ideal for most people. But iridium provides even higher performance and longevity, but at a considerable price premium. Platinum offers a perfect blend of performance and economy, paired with a long lifespan. For modern engines that don’t have distributors in them, you’re better off with iridium or platinum plugs. If you have a classic vehicle that still has a low-voltage, distributor-based ignition, copper spark plugs might be your only choice. It’s important to consider which type and material fit your particular car. Since the classification of spark plug types is wholly based on their material composition, you can tell that material is an important factor that plays a key role in their performance and reliability. On average, these last four times longer than an old-school copper plug, which goes to show how far modern motor technology has come! Material Considerations They’re good enough to supply you with tons of power in any driving condition, including back-to-back high-speed laps on a performance racetrack. Using iridium material in both the electrode and cap, these spark plugs are the best ones you can find on the market today. Double iridium spark plugsįollowing the same theme as above, double iridium is an enhanced version of the regular iridium spark plugs. They’re a significant upgrade in performance from regular platinum plugs while still being much cheaper than iridium ones, which makes them a sweet spot for those looking for an affordable option for their performance cars. They use platinum material in both cap and electrode, providing even better efficiency, performance, and durability than single-plated ones. The double platinum spark plug is a reinforced version of the regular platinum spark plug. While many older engines prefer copper spark plugs for optimal performance, most modern motor engines are not compatible with them. In recent years, iridium and platinum spark plugs have overtaken copper spark plugs as a more popular option due to better efficiency, performance, and durability. These used to constitute the biggest portion of the spark plug market as they’re the most affordable and the most basic. They can last about twice as long as their copper counterparts, making them a popular choice in city cars and some sports cars. These plugs are a high value for the money, giving you considerably higher performance, gas mileage, and longevity that’s second only to iridium plugs. These plugs are generally only used in performance cars. But the material quality and the innovative technology that’s integrated into these plugs drive their price up, which can be a limiting factor for those who are looking for an affordable option. Let’s start with the most premium choice out there - iridium spark plugs! The highest-end plugs feature an iridium construction as the reliability, performance, fuel average, and lifespan they offer are unmatched. They can be classified into five categories, each of them better suited for a certain demographic of drivers. But you still need to narrow it down to just one, so here’s a detailed buying guide to help you navigate the market like a true motorhead.īelow, we’ve included everything you need to know. So far, we’ve featured an overview of the description, pros, and cons of some of the highest-quality spark plugs that are available on today’s market.
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