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Spark Plug
Spark plugs help maximize your engine's performance, and we carry a wide selection including OEM brands like Motorcraft, ACDelco, NGK spark plugs, and more, all known for their exceptional durability and consistent performance. Over time, spark plugs can become worn, leading to decreased fuel efficiency and engine power. When replacing a set of spark plugs, using the correct tools and following a methodical process is critical. Spark plug maintenance is not only about replacement but also about ensuring that the connections are clean, and the gaps are set correctly to the manufacturer's suggestion.
Choosing the right spark plug can lead to improved fuel economy, smoother starts, and reduced emissions, which are important for maintaining your vehicle's overall health. Regularly replacing your spark plugs is a key aspect of vehicle maintenance that helps prevent engine misfires, power loss, and starting difficulties. Order online now for same-day delivery or pick up in-store near you.
Spark Plugs for Replacement, Repair and More
When purchasing spark plugs for your vehicle, it's crucial to consider several key factors to ensure optimal performance and compatibility. First, verify the specifications required for your specific make and model, as different engines demand varying types of spark plugs, such as copper, platinum, or iridium. Pay attention to the heat range, which affects how well the spark plug can handle engine temperatures; selecting the correct heat range prevents pre-ignition and helps maintain engine efficiency. Additionally, assess the gap size, as the correct gap ensures proper spark generation for effective combustion. If you're replacing worn spark plugs, consider changing them in sets to maintain balanced performance. Lastly, opt for reputable brands known for their reliability and quality to enhance longevity and fuel efficiency, ultimately contributing to a smoother driving experience.
Spark Plugs Prices, Brands & Ratings
Advance Auto Parts customers consistently choose to buy Spark Plugs from trusted brands like NGK, Autolite, DENSO, and Motorcraft for their reliability and positive ratings. As of 6/2/26, the Spark Plugs listed below are the ones our customers have preferred most, offering compatibility with a wide array of leading vehicle manufacturers including Chevrolet, Pontiac, Dodge, Cadillac, and 188 other popular makes. These best-selling Spark Plugs are priced between $4.49 and $26.99. However, please note that prices may fluctuate based on your location's availability. To ensure a seamless match with your vehicle, we invite you to use the "Add Vehicle" tool in the top menu, or explore the Spark Plug options. Trust in Advance Auto Parts to provide you with high-quality Spark Plugs to meet your specific car maintenance or project needs.
Spark plugs are responsible for delivering the electric current from the ignition system to the combustion chamber of the engine. This spark ignites the air/fuel mixture, which in turn powers your car. Through this combustion process, the energy needed to start and keep the engine running is created, making spark plugs crucial for engine performance. By maintaining precise design tolerances, spark plugs also help optimize fuel efficiency, allowing your vehicle to achieve better gas mileage. Additionally, well-functioning spark plugs contribute to reduced emissions by ensuring a more complete burn of the fuel mixture.
Typically, copper spark plugs need to be replaced every 20,000 to 30,000 miles, whereas platinum and iridium spark plugs have a longer lifespan and can last up to 60,000 to 100,000 miles. Your vehicle's owner manual is a valuable resource for information on specific maintenance intervals and can provide manufacturer recommendations that are tailored to your car model. However, it's also crucial to consider factors like idling time, frequency of short trips, and high-performance driving, which can necessitate more frequent replacement.
One of the most common symptoms is a reduced engine performance, which you may notice as a decline in fuel efficiency and power during acceleration. You might also have trouble starting your vehicle, as faulty spark plugs can prevent the engine from firing up smoothly. In addition, if your engine is constantly misfiring or you notice a rough idling, it is often a clear sign that the spark plugs are not operating optimally. Another telltale symptom is unusual noises such as knocking or pinging sounds, which emerge when ignition issues arise. Lastly, you might observe an increase in exhaust emissions, often accompanied by a strong fuel smell, indicating incomplete combustion due to ineffective spark plugs.
Spark plug replacement is often considered one of the more straightforward maintenance tasks for those who enjoy working on their vehicles. Start by gathering essential tools, such as a spark plug socket, a spark plug gap gauge, and a torque wrench. Before beginning, make sure your engine is cool, and disconnect the battery to ensure safety. Carefully remove the ignition coils or wires to access the spark plugs, taking note of their arrangement. When installing new spark plugs, it's crucial to check the gap and ensure they're torqued to the manufacturer's specifications to avoid any potential engine issues.
With new spark plugs, you'll experience smoother acceleration, as the engine fires up more effectively, delivering a better driving experience. Moreover, fresh spark plugs can contribute to enhanced fuel efficiency, potentially saving you money on gas over time. This is because old or worn-out spark plugs can cause incomplete combustion, leading to wasted fuel. Additionally, you might detect a reduction in engine misfires or rough idling, which are common symptoms of faulty spark plugs.
The primary types include copper, platinum, and iridium spark plugs, with each offering distinct advantages. Copper spark plugs are known for their affordability and superior conductivity, making them ideal for older vehicles or those that operate under less strenuous conditions. Platinum spark plugs, on the other hand, provide greater durability and higher performance efficiency, typically lasting longer due to their resistance to wear and tear at high temperatures. Meanwhile, iridium spark plugs are highly regarded for their strength and longevity; their fine-wire center electrode ensures a more efficient spark and better fuel combustion, making them a popular choice for modern, high-performance vehicles. Additionally, double platinum and double iridium spark plugs feature enhanced electrode coverage, offering double-layered durability and consistent performance.