Best Denso Car Spark Plugs of 2025

The DENSO K16HR-U11 Spark Plug is an excellent choice for anyone looking to maintain their vehicle's performance. With a tightening torque of 22 Nm and a diameter of 14 mm, these spark plugs are designed for easy installation. Manufactured in Japan, DENSO ensures the highest quality, providing you with reliable ignition and smooth engine starts. The nickel alloy construction offers durability, helping you save on frequent replacements. You can trust DENSO for consistent performance in various driving conditions, ensuring your vehicle runs smoothly.

The Denso IW27 Spark Plug is designed for Japanese, Korean, and derivative vehicles, ensuring original parts or equivalent quality. This compatibility means you can enjoy reliable performance and peace of mind knowing your vehicle is equipped with top-quality components. Additionally, the spark plug supports a range of models, including the ALPINE 1600, making it a versatile choice. With its extensive list of compatible part numbers, you can easily find the right fit for your specific vehicle, enhancing your driving experience.

The DENSO Nickel Spark Plug offers remarkable performance enhancements for your vehicle. With its innovative thin centre electrode, you can expect improved ignitability, resulting in a more efficient combustion process. This means your car will run smoother and more reliably. Additionally, the spark plug boosts fuel efficiency by 1.2%, allowing you to drive further on less fuel. Precision construction from DENSO ensures you receive a high-quality product that is built to last, giving you peace of mind on the road.

The IKH16 Iridium Spark Plug features a copper core that enhances thermal conductivity, ensuring efficient engine performance. Its machine-rolled threads help reduce the chances of cross-threading and seizing during installation, providing you with a hassle-free experience. Additionally, five specialised ribs are designed to prevent flashover, offering reliable ignition. With compact package dimensions of 2.54 L x 2.54 H x 8.382 W centimetres, this spark plug is easy to store and handle, making it a convenient choice for your vehicle maintenance.

The DENSO Iridium TT Plug is designed to enhance your vehicle's performance. With its twin tip design, it provides improved acceleration and fuel economy, ensuring you get the most out of every journey. The advanced electrode shape decreases the quenching effect, allowing the flame kernel to develop quickly and maximise engine power. Additionally, the high melting point iridium alloy reduces spark voltage requirements, resulting in better ignitability and a smoother engine operation. You will notice a significant difference in your car's performance with this innovative spark plug.

The Denso XU22EPR-U Spark Plug is designed for optimal engine performance. Its cooper glass seal enhances heat dissipation, ensuring your engine runs smoothly. The standard U-groove allows for efficient ignition, while the deeply inserted cooper core provides better conductivity. Additionally, the heat-resistant nickel plating protects the spark plug from wear, ensuring longevity. With these features, you can enjoy improved engine efficiency and reliability.

The DENSO Iridium TT Plug offers exceptional performance with its twin tip design, enhancing acceleration and fuel economy compared to standard plugs. The unique double needle shape of the electrode reduces the quenching effect, allowing for a more rapid development of the flame kernel. This means you can experience your engine operating at its maximum potential. Additionally, the iridium alloy centre electrode has a high melting point, which improves ignitability and reduces the spark voltage requirements, making your driving experience more efficient.

The DENSO IW24 Spark Plug offers exceptional performance for riders who prioritise engine efficiency. Its 0.4mm diameter iridium alloy centre electrode ensures a full spark performance, enhancing acceleration and torque. With a built-in 5,000 ohm resistor, it effectively reduces electromagnetic noise, safeguarding your electronic devices. The taper-cut ground electrode significantly improves fuel ignitability, providing more reliable combustion. Additionally, its corrosion-resistant housing makes it ideal for use in all weather conditions, ensuring long-lasting reliability.

The Denso SC16HR11 Spark Plugs are designed specifically for cars, ensuring optimal performance. With a diameter of 12 mm, these plugs fit snugly into your engine, enhancing efficiency. The 14 mm spanner size makes installation straightforward, allowing you to replace them easily without hassle. The earthed electrode helps improve ignition reliability, giving you peace of mind on the road. Additionally, the thread measurement of 26.5 mm ensures a secure fit, reducing the risk of misfiring.

The Denso IU24 Spark Plug is designed for Japanese, Korean, and derivative vehicles, ensuring high-quality performance. This product is particularly suitable for luxury cars like the Ferrari 360 and Maserati 3200 GT, making it a reliable choice for enthusiasts. Its original parts or equivalent quality offer peace of mind that you are using a trusted component. With a variety of compatibility options, you can easily find the right fit for your vehicle, enhancing its overall performance and longevity.