No modern car would run without spark plugs to start the engine off, which is why you have to ensure that yours is up for the job at all times and in all weather conditions. Given the necessity of these components, it is quite surprising how affordable they are.

Even so, you shouldn’t simply buy whatever plug you gat your hands on just because it’s cheap. Instead, you should do your best to get a reliable one, the type of spark plug that will work well in virtually any conditions. To give you some pointers in this respect, we put together a list of the ten best spark plugs money can buy.

Best Spark Plugs – Reviews

10Autolite APP104 Double Platinum

The APP104 is a truly reliable spark plug model by Autolite. These plugs have platinum-to-platinum firing that ensures zero gap erosion and reduces misfires while improving durability.

The superior performance plugs offer the technology suitable for DIS engines, featuring a side alloy of high nickel alloy, full platinum tips, a necked-down center electrode for faster and cleaner firing with lower voltage to ensure easier starting, and a decent accelerating. Furthermore, a full copper core center guarantees an all-weather performance.

9NGK CR9EK Standard

Featuring a solid copper core meant for a quicker, greater spark and excellent heat dissipation and thermal conductivity, NGK’s CR9EK is objectively one of the most efficient spark plugs today. It further boasts a longer insulator nose for averting fouling while corrugated ribs featured on the insulator ensure no flashovers. It also features dual ground electrodes that offer a more reliable spark than other plugs in its class cannot.

8Autolite XP5224 Iridium XP

The Autolite’s Xtreme Performance spark plug is technologically improved, featuring an iridium-fortified 0.6mm fine-wire design as well as unique Platinum side-wire technology that together deliver greater durability and a better-focused ignition for optimal performance. This plug further features an iridium-improved center electrode along with a high-deliver nickel-plated shell to ensure its long-term reliability.

7DENSO FBA 3297 Iridium Long Life

The Denso Iridium Long Life, with a proprietary alloy construction, is a top-performance spark plug that delivers a lot more reliable spark as well as conductivity. It does this by utilizing an advanced 360-degree laser welding, a process that ensures unmatched consistency and conductivity. Moreover, this plug is about 6 to 7 times harder and nearly 8 times stronger than traditional Platinum models.

6NGK BKR5E-11 V-Power

With the capacity to perform within a lot wider heat range relative to ordinary models, the NGK’s BKR5E-11 spark plug stands apart as one of the few that boasts resistance to pre-ignition and carbon buildups.

Featuring high alumina ceramics, this plug ensures a much greater heat dissipation and electrical insulation, simultaneously eliminating chances of combustion gas leaks. Moreover, its trivalent metal plating provides superior anti-seizing and anti-corrosion properties.

5Bosch 4417 Platinum+4

This spark plug by Bosch integrates advanced surface air-gap firing innovation with four yttrium-reinforced ground electrodes to deliver a powerful, long spark for boosting the overall performance of nearly any engine type.

The gap, again, alleviates the wear and oxidation of the spark plug itself, ensuring optimized access to the fuel/air mixture that majority high-end engines need for a better or even guaranteed combustion efficiency.

4Denso (3297) SK20R11 Iridium

With a sturdy iridium construction whose melting point is very high, the Denso 3297 SK20R11 spark plug is among the most durable plugs in its class. It thus guarantees a much greater acceleration than a lot many other plug models.

Moreover, it delivers stable combustion through engine idling, a much-regarded property for any high-quality spark plug. Its design, too, ensures a lasting form and impressive performance, which is something one must always look for in a spark plug.

3ACDelco 41-993 Professional Iridium

What makes ACDelco 41-993 spark plug exceptional is its unique and assured engine idling stability plus a much smoother and reliable overall performance. Its efficiency is the work of a small yet effective electrode design which boasts a highly reliable cold ignition and faster acceleration while not compromising the plug’s structural integrity. Moreover, it has a single-piece suppressor for blocking radio frequencies which would otherwise interfere with the car’s electronics.

2NGK BKR5EIX-11 Iridium IX

Engineered for superior performance, the BKR5EIX-11 by NGK is doubtless among the most dependable spark plugs available today. Among its highlights, we find a longer insulator nose for preventing fouling. Moreover, its corrugated ribs on the insulator prevent flashovers while a triple gasket seal optimally eliminates ignition gas leakage.

Trivalent metal plating provides greater anti-seizing and anti-corrosion qualities, further recommending it as a truly reliable spark plug, one that will operate in all weather conditions.

1Denso PK20TT Platinum TT

An incredibly high rated spark plug, the Denso’s PK20TT features an innovative twin-tip design and an 11-mm platinum center electrode that is paired with 11-mm titanium-reinforced ground electrode.

Adding pure alumina powder insulator, the Platinum TT provides incredible dielectric power and thermal conductivity, thus standing against extreme stress. This improves the engine’s fuel efficiency and acceleration and providing a much quicker ignition than most.

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