Best Single Spark Plugs of 2025

BOSCH Platinum Spark Plug features a platinum firing pin and yttrium enhanced ground electrode for 2X longer service life than standard copper plugs. Its fine wire design enhances ignitability and performance. The 360° continuous laser welding ensures increased durability. You also get a 4-year performance satisfaction guarantee. This spark plug is an original equipment, pre-gapped replacement that fits a wide range of vehicles, ensuring optimum performance.

The Bosch Double Iridium Spark Plug offers superior performance with its iridium firing pin and ground electrode inlay, giving you four times the lifespan of standard copper plugs. The ultra-fine wire design, welded with precision, enhances ignitability while reducing voltage needs by up to 24%, making your ignition system more efficient. You’ll appreciate the nickel-plated threads, which resist corrosion and simplify installation—no anti-seize necessary. Plus, these spark plugs come pre-gapped from the factory, meaning you can install them right out of the box without any adjustments.

Bosch Spark Plug features double iridium electrodes for enhanced performance. The spark plug is designed to match Gasoline Direct Injection (GDI) technology, ensuring optimal spark position. With nickel-plated rolled threads, it offers superior corrosion resistance, eliminating the need for anti-seize during installation. Additionally, the pre-gapped spark plugs save you the hassle of adjusting gaps before installing them, meeting or exceeding modern gasoline engine requirements. Enjoy an OE fit, form, and function with 4X longer service life compared to standard copper spark plugs.

The Bosch Automotive Double Iridium Spark Plug is a high-performance spark plug designed to provide superior ignitability and long service life. With its double iridium firing pin and ground electrode inlay, this spark plug offers 4 times longer service life compared to standard copper plugs. The 0.6mm fine wire firing pin ensures optimal performance and ignition. The 360-degree continuous laser weld fuses the corrosion-resistant iridium firing pin to the base, increasing durability. This spark plug is perfect for those looking for reliable ignition and improved engine performance. With its 7-year performance satisfaction guarantee, you can trust the Bosch Automotive Double Iridium Spark Plug to deliver exceptional results.

The Bosch Platinum Spark Plug offers exceptional performance with its innovative design. Its yttrium-enhanced ground electrode ensures a longer lifespan, effectively doubling the service life compared to traditional copper plugs. The continuous laser-welded fine wire platinum firing pin contributes to improved ignitability and corrosion resistance, giving you reliable starts and smoother engine performance. Additionally, the ribbed insulator design prevents misfires by sealing tightly against the wire boot. With nickel-plated rolled threads, you won’t have to worry about corrosion or the need for anti-seize during installation, making it a convenient choice for your vehicle.

The Bosch Double Platinum Spark Plug offers exceptional performance and durability for your vehicle. Its unique platinum firing pin and ground electrode inlay ensure a longer lifespan, lasting three times longer than traditional copper plugs. The innovative 360-degree laser-welded design enhances corrosion resistance and ignitability, which means you can expect smoother starts and improved fuel efficiency. Plus, with nickel-plated rolled threads, you won’t need to worry about corrosion during installation. Best of all, these spark plugs come pre-gapped, allowing you to install them right out of the box without any adjustments.

The Bosch Double Iridium Spark Plug offers exceptional performance and longevity for your vehicle. With both an iridium firing pin and ground electrode, these plugs can last four times longer than standard copper options, saving you time and money on replacements. The ultra-fine wire design enhances ignitability, requiring up to 24% less voltage, which means easier starts and improved efficiency. Additionally, the nickel-plated threads are resistant to corrosion, simplifying installation since you won’t need anti-seize. Plus, these plugs come pre-gapped, so you can install them straight from the box without any adjustments.

The Bosch Iridium Spark Plug offers advanced performance with its dual iridium design, featuring both an iridium firing pin and ground electrode. This setup not only enhances ignitability but also reduces voltage needs by up to 24%, ensuring a smoother engine start. The ultra-fine wire design is laser welded for extra durability, making it a reliable choice for your vehicle. Additionally, these spark plugs come pre-gapped from the factory, so you can install them right out of the box without any adjustments, saving you time and hassle.

The Bosch Double Iridium Spark Plug is designed for high performance and longevity. With both an iridium firing pin and ground electrode, this spark plug lasts four times longer than traditional copper options, giving you peace of mind on the road. The ultra-fine wire firing pin enhances ignitability, meaning your engine will use less voltage while starting up. Additionally, the nickel-plated threads resist corrosion, making installation hassle-free without the need for anti-seize. Pre-gapped at the factory, these plugs are ready to install right out of the box, saving you time and effort.

The Bosch Double Iridium Spark Plug offers superior performance and longevity for your engine. With both an iridium firing pin and a ground electrode inlay, you can expect four times the lifespan of standard copper plugs. The ultra-fine wire firing pin is laser welded, enhancing ignitability and reducing voltage needs by up to 24%. You will appreciate the nickel-plated rolled threads that resist corrosion, making installation hassle-free. Plus, these plugs come pre-gapped from the factory, so you can install them right out of the box without any adjustments.