Best ACDelco Car Spark Plugs of 2026

The ACDelco R45TS Spark Plug is designed to enhance your vehicle's performance. Its Black Onyx coating effectively reduces corrosion, ensuring longevity. The copper core offers excellent heat transfer, which helps to maximise the durability of the plug. Additionally, the ribbed suppressor seal provides increased resistance, preventing spark 'flash over' and misfires. With nickel-chrome alloy sheathing, the centre electrode is further protected from corrosion, making it a reliable choice for your engine.

The ACDelco Gold R45 Spark Plug features a Black Onyx coating that significantly reduces corrosion, ensuring longevity and reliability. Its copper core enhances heat transfer, which maximises durability and performance during use. Additionally, the ribbed suppressor seal extends resistance, helping to prevent spark 'flash over' and misfires, ensuring a smooth engine operation. The nickel chrome alloy sheathing on the centre electrode further protects against corrosion, giving you confidence in your vehicle's performance. This spark plug is designed to keep your engine running efficiently.

The ACDelco Spark Plug features a black onyx coating that helps prevent corrosion, ensuring longevity and reliability in your engine. Its copper core thermal properties provide excellent heat transfer, enhancing the plug's durability. With a ribbed suppressor seal, this spark plug extends resistance and prevents spark 'flash over' and misfire, giving you peace of mind while driving. Additionally, the nickel-chrome alloy sheathing protects the centre electrode from corrosion, ensuring optimal performance for your vehicle.

The ACDelco Iridium Spark Plugs are designed to enhance your vehicle's performance. With their iridium construction, you can enjoy improved engine idle stability and a smoother driving experience. The fine-wire electrode allows for better ignition of fuel, leading to quicker acceleration and more efficient cold starts. Additionally, the plugs are designed to burn away carbon deposits, helping to improve your fuel economy over time. This means you can drive with greater confidence and efficiency.

The ACDelco Iridium Spark Plug offers exceptional engine idle stability, ensuring your vehicle runs smoothly. Its fine wire electrode effectively burns away carbon deposits, helping to maintain optimal performance over time. Additionally, the one-piece suppressor seal blocks radio frequencies that can interfere with your vehicle's electronics, giving you peace of mind. Moreover, the suppressor seal also meters spark energy, which contributes to a longer electrode life and reduces the risk of combustion leakage, enhancing your driving experience.

The ACDelco Spark Plug offers exceptional durability and performance for your vehicle. Its black onyx coating prevents corrosion, ensuring longevity and reliability. The nickel-chrome alloy sheathing on the centre electrode further enhances corrosion resistance, providing peace of mind during use. With a copper core, this spark plug ensures excellent heat transfer, which helps maintain optimal engine performance. Additionally, the ribbed suppressor seal extends resistance, preventing spark flash-over and misfires, so you can enjoy a smoother driving experience.

The ACDelco R43TS Spark Plug is designed for optimal performance in your vehicle. The Black Onyx coating effectively reduces corrosion, ensuring longevity. With a copper core, it provides excellent heat transfer, which maximises the durability of the plug. Additionally, the ribbed suppressor seal enhances resistance, helping to prevent spark 'flash over' and misfires, ultimately improving your engine's reliability. Lastly, the nickel-chrome alloy sheathing protects the centre electrode from corrosion, enhancing its lifespan. This spark plug is a reliable choice for various automotive needs.

The ACDelco CR43TS Spark Plug features a Black Onyx coating that significantly reduces corrosion, ensuring a longer lifespan. Its copper core offers excellent heat transfer, enhancing the plug's durability and performance. Additionally, the ribbed suppressor seal provides extended resistance, helping to prevent spark 'flash over' and misfires, which can save you from unexpected engine troubles. With nickel-chrome alloy sheathing on the centre electrode, this spark plug is designed to resist corrosion, making it a reliable choice for your vehicle.

The ACDelco Iridium Spark Plug enhances your vehicle's performance with its exceptional engine idle stability, ensuring a smooth driving experience. The fine wire electrode is designed to burn away carbon deposits, which helps maintain efficiency over time. Additionally, the one-piece suppressor seal blocks radio frequencies that could interfere with your vehicle's electronics. This feature also meters spark energy, promoting long electrode life and preventing combustion leakage, giving you peace of mind on the road.