Best Single Spark Plugs of 2026

The NGK G-Power Platinum Spark Plugs TR5GP is designed to operate over a wider heat range than ordinary plugs, resist carbon buildup, and pre-ignition. The patented triple gasket sealing process eliminates the possibility of combustion gas leakage, ensuring reliable performance.

The NGK Copper Spark Plugs come in a convenient 2-pack, giving you a reliable option when you need to replace your vehicle's spark plugs. These are genuine NGK parts, so you can trust their quality and performance for your engine. Each spark plug is packaged individually with original hardware, making installation easier and ensuring you have everything you need right out of the box. Plus, these plugs are designed as direct replacements, so you can swap them into your vehicle with confidence. Be sure to confirm your vehicle’s fitment to guarantee compatibility and smooth operation.

The NGK Iridium IX Spark Plug is designed for performance enthusiasts, offering improved throttle response, anti-fouling, and extreme ignitability. The spark plug features a 0.6mm laser-welded fine iridium tip that ensures high durability and consistent, stable sparks. A tapered ground electrode helps minimize the electrical quenching effect, while a longer insulator nose prevents fouling. The spark plug also has superior anti-corrosion and anti-seizing properties thanks to its trivalent metal plating.

The NGK LKR7DIX-11S Iridium IX Spark Plug is designed for performance enthusiasts, offering extreme ignitability and improved throttle response. Its laser-welded fine Iridium tip ensures high durability and a consistently stable spark, while the tapered ground electrode minimizes electrical quenching effect. The corrugated ribs on the longer insulator prevent flashover, and the triple gasket seal eliminates combustion gas leakage. The Iridium alloy has an extremely high melting point, making it durable to heat and electrical wear, perfect for high-performance engines. The Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties.

NGK Spark Plugs TR55 is designed to work in a wider heat range, resist carbon buildup, and eliminate the possibility of combustion gas leakage with its patented triple gasket sealing process. It has been a reliable OE cornerstone for decades.

NGK 6619 Iridium Spark Plugs are designed to operate over a wider heat range than ordinary plugs, resist carbon buildup and pre-ignition, and eliminate the possibility of combustion gas leakage with its patented triple gasket sealing process. These spark plugs are ideal for anyone who wants a durable and reliable option for their vehicle.

DENSO Platinum Spark Plugs feature a unique Twin-Tip Structure that enhances performance by providing a 1.1mm platinum center electrode. The 360 Laser welding ensures a secure connection, while the Titanium-enhanced alloy on the ground electrode increases durability, reducing tip erosion. These spark plugs are designed to optimize ignition, ensuring efficient combustion in your vehicle, resulting in improved fuel efficiency and smoother engine operation.

The ACDelco GM Original Equipment 41-162 Iridium Spark Plug features an iridium composition that provides high melting point and great strength, resulting in excellent wear resistance and durability. The spark plug offers reliable cold starting, quick acceleration, smooth performance, and excellent engine idle stability. The three-piece fired in suppressor seal meters spark energy for long electrode life, prevents combustion leakage, and blocks radio frequencies that can affect vehicle electronics. ACDelco GM Original Equipment parts are designed, engineered, and tested to rigorous standards for Chevrolet, Buick, GMC, or Cadillac vehicles.

The ACDelco Professional Platinum Spark Plug offers a one-piece, gas-tight seal and a double platinum point pad that provides consistent voltage demands, prevents wear on the ignition system and protects against compression pressures. With pure copper core, this spark plug can maximize durability and reduce fouling resistance. Formerly known as ACDelco GM Original Equipment parts.