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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.

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Spark Plugs for Replacement, Repair and More

Advance Auto Parts customers consistently choose to buy Spark Plugs from trusted brands like

for their reliability and positive ratings. As of 3/1/26, the Spark Plugs listed below are the ones our customers have preferred most, offering compatibility with a wide array of leading vehicle manufacturers including

, and 188 other popular makes. These best-selling Spark Plugs are priced between $3.99 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.

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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug. Product Features:<ul><li type=disc>SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark<li type=disc>IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines<li type=disc>TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability<li type=disc>SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges<li type=disc>TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal<li type=disc>RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs<li type=disc>Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.<li type=disc>Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.

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Washer(s) Included

Autolite Iridium Ultra Laser Fine wire Spark Plugs are one of our brand's most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world. Product Features:<ul><li type=disc>Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.<li type=disc>A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.<li type=disc>Nickel-plated shell to resist corrosion.<li type=disc>High-alumina ceramic insulator for increased strength.<li type=disc>Laser welded 0.5mm Iridium finewire center electrode.<li type=disc>Proprietary platinum sidewire technology.

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance. Product Features:<ul><li type=disc>0.6 mm finewire design improves ignitability<li type=disc>Patented V-trimmed platinum sidewire technology resists wear<li type=disc>OE equivalent design is engineered for every engine<li type=disc>Designed for better overall durability with virtually no gap erosion<li type=disc>Double Iridium-Enhanced Alloy Technology Center Electrode: Improves durability and wear resistance for a longer-lasting spark plug.<li type=disc>Engineered in the USA: Designed with over 100 years of Autolite engineering experience for superior quality and performance.<li type=disc>Proven Track Record: Part of a legacy with over 11 billion spark plugs sold, ensuring trusted performance and reliability.

Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring a longer service life compared to copper and standard platinum plugs. The yttrium-enhanced ground electrode delivers superior heat transfer, providing unmatched durability under high temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for consistent performance. With a mid-projection center electrode and flat seat type, this performance-grade spark plug is designed to meet demanding engine requirements. Both the center and ground electrode tips are crafted from platinum, ensuring reliable ignition and enhanced durability. Whether you're seeking improved engine efficiency or reduced maintenance, this spark plug delivers superior value and performance. Product Features:<ul><li type=disc>Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.<li type=disc>The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.<li type=disc>Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.<li type=disc>The multi-rib insulator prevents flash-over.<li type=disc>Designed with a mid-projection center electrode and flat seat type to meet the demanding requirements of modern engines, ensuring consistent and reliable performance.

Hex Type

Indexed

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug. Product Features:<ul><li type=disc>SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark<li type=disc>IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines<li type=disc>TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability<li type=disc>SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges<li type=disc>TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal<li type=disc>RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs

Washer Type

ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicles original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional. Product Features:<ul><li type=disc>Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components<li type=disc>Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability<li type=disc>Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance<li type=disc>Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics<li type=disc>Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability<li type=disc>Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional<li type=disc>ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.<li type=disc>GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle<li type=disc>GM regularly updates production and service part designs to integrate new materials and technologies

Spark Plug

The Motorcraft High-Performance Spark Plug is expertly crafted to deliver superior ignition performance and optimize fuel efficiency, ensuring reliable starts and smoother engine operation. Featuring a standard center electrode design with an iridium tip and a nickel ground electrode tip, this spark plug is built for exceptional durability and long-lasting performance. Its tapered seat type ensures a secure fit, making it a dependable choice for maintaining your vehicle's peak performance. Designed to enhance engine responsiveness and improve overall fuel economy, this spark plug is an excellent upgrade for drivers seeking consistent and efficient performance. With precision engineering and high-quality materials, the Motorcraft High-Performance Spark Plug offers unmatched value, helping you save on fuel costs while keeping your engine running at its best. Product Features:<ul><li type=disc>Enhances Fuel Efficiency: The Motorcraft High-Performance Spark Plug is specifically designed to optimize fuel efficiency, helping you save on fuel costs.<li type=disc>Superior Ignition Performance: Engineered for superior ignition performance, this spark plug ensures reliable starts every time.<li type=disc>Exceptional Durability: Crafted with precision, the Motorcraft High-Performance Spark Plug offers exceptional durability, providing long-lasting performance.<li type=disc>Consistent Performance: This spark plug delivers consistent performance, making it an ideal choice for maintaining your vehicle's peak performance.<li type=disc>Improved Engine Responsiveness: Upgrade to Motorcraft and experience a noticeable difference in your engine's responsiveness and overall fuel economy.<li type=disc>Enhances Fuel Efficiency: The Motorcraft High-Performance Spark Plug is specifically designed to optimize fuel efficiency, helping you save on fuel costs.<li type=disc>Superior Ignition Performance: Engineered for superior ignition performance, this spark plug ensures reliable starts every time.<li type=disc>Exceptional Durability: Crafted with precision, the Motorcraft High-Performance Spark Plug offers exceptional durability, providing long-lasting performance.<li type=disc>Consistent Performance: This spark plug delivers consistent performance, making it an ideal choice for maintaining your vehicle's peak performance.<li type=disc>Improved Engine Responsiveness: Upgrade to Motorcraft and experience a noticeable difference in your engine's responsiveness and overall fuel economy.

ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional. Product Features:<ul><li type=disc>Iridium is the latest in spark plug technology and is an exact replacement for vehicles' original components<li type=disc>Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability<li type=disc>Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance<li type=disc>Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics<li type=disc>Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability<li type=disc>Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional<li type=disc>ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.<li type=disc>GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle<li type=disc>GM regularly updates production and service part designs to integrate new materials and technologies<li type=disc>Resistor Type: Equipped with a resistor to help reduce radio frequency interference, ensuring smooth engine performance.<li type=disc>Tapered Seat Type: Features a tapered seat type for a secure fit and reliable performance in your vehicle.

Washer Included

Professional Iridium Spark Plugs

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered c Product Features:<ul><li type=disc>SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark<li type=disc>IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines<li type=disc>TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability<li type=disc>SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges<li type=disc>TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal<li type=disc>RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs

Champion Iridium spark plug is engineered for drivers who demand peak performance and durability. Featuring a fine-wire iridium center electrode and a platinum-enhanced ground electrode, it delivers exceptional ignitability and a sharper spark focus for maximum engine efficiency. The V-trimmed ground electrode ensures consistent performance, while the Heat-Active alloy quickly reaches and maintains optimal operating temperatures under all engine loads. Designed with a flat seat type for a secure fit, this premium spark plug also includes a built-in resistor to minimize electromagnetic interference and enhance overall engine performance. Whether you're looking for longevity or top-tier ignition reliability, this performance-grade spark plug is built to exceed expectations. Product Features:<ul><li type=disc>Champion Iridium - Maximum Performance. Premium Spark Plug<li type=disc>Iridium center electrode delivers maximum life<li type=disc>Fine-wire center electrode and V-trimmed for greater ignitability<li type=disc>V-trimmed ground electrode promotes sharper spark focus<li type=disc>Maintains stable operating temperature under all engine loads<li type=disc>Heat-Active alloy allows electrodes to reach optimal temperature quickly<li type=disc>Flat Seat Type: Designed with a flat seat type for a secure fit and optimal performance.<li type=disc>Built-In Resistor: Includes a resistor to ensure superior engine performance and reduce electromagnetic interference.

Center Electrode Diameter (Inch)

Gap Style

Ground Electrode Material

Installed Height (Inch)

Part Description

ACDelco GM Original Equipment Double Platinum Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. ACDelco GM Original Equipment parts are the true OE parts installed during the production or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional. Product Features:<ul><li type=disc>One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life<li type=disc>Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system<li type=disc>Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance<li type=disc>Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional<li type=disc>ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors<li type=disc>GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle<li type=disc>GM regularly updates production and service part designs to integrate new materials and technologies

Approximate Resistor Value

Core Nose Length

Height

Indicated Mean Effective Pressure (IMEP)

Length

Spark Plug Approximate Resistor Value

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Two Guys Garage

NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems. Product Features:<ul><li type=disc>ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance<li type=disc>IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines<li type=disc>PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life<li type=disc>SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges<li type=disc>TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal<li type=disc>RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs<li type=disc>Superior Durability: The iridium-tipped center electrode is six times harder than platinum, ensuring long-lasting performance.<li type=disc>OE Application Specific: Engineered specifically for Original Equipment (OE) applications, ensuring a perfect fit and optimal performance.<li type=disc>Even Wear: Features a platinum pad on the ground electrode for even wear, particularly beneficial in distributorless ignition systems.<li type=disc>Fine Wire Tip Design: The fine wire tip design of the LZFR5CI-11 model enhances ignition efficiency and performance.

NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug. Product Features:<ul><li type=disc>SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark<li type=disc>PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs<li type=disc>TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance<li type=disc>SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges<li type=disc>COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads<li type=disc>RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs<li type=disc>Economical Upgrade: Ideal for vehicles originally equipped with nickel alloy spark plugs, offering a cost-effective performance boost.<li type=disc>NGK Quality: Trusted brand known for high-quality spark plugs, ensuring long-lasting and dependable performance.

The Iridium Power Spark Plug features the world's smallest 0.4mm Iridium Center Electrode, delivering unmatched spark precision for maximum combustion efficiency and enhanced engine performance. Engineered with a patented 360-degree laser welding assembly process, it ensures exceptional durability and reliability under extreme conditions. The U-groove and taper-cut ground electrode design optimizes flame propagation, promoting smoother engine operation and improved fuel efficiency. Built to withstand temperatures exceeding 4000 Deg F, this spark plug is burnished with nickel plating for superior resistance to high temperatures and corrosion. Its compatibility spans a wide range of applications, including classic and collector cars, making it a versatile choice for various vehicles. With its flat seat type and premium Iridium tip material, this spark plug guarantees long-lasting performance and consistent ignition, offering excellent value for drivers seeking maximum spark energy and durability. Product Features:<ul><li type=disc>World's smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion<li type=disc>Patented 360-degree laser welding assembly process<li type=disc>U-groove and taper cut ground electrode to maximize flame propagation.<li type=disc>Withstands temperatures greater than 4000 degree Fahrenheit<li type=disc>Burnished nickel plating for high temperature endurance and superior corrosion resistance<li type=disc>Wide range of part numbers for thousands of applications, including classic and collector cars<li type=disc>Iridium Power

"Win" - DENSO Iridium Spark Plugs - NHRA Champion Jason Line

Motorcraft Spark Plugs are expertly crafted to deliver enhanced durability, optimized performance, and unmatched reliability for Ford, Lincoln, and Mercury vehicles. Designed with high-quality materials, these spark plugs feature an iridium center electrode tip and platinum ground electrode tip, ensuring resistance to oxidation and arc erosion for long-lasting performance. The multi-rib insulator minimizes misfires, while the tapered seat type guarantees an exact fit for seamless installation. Engineered to meet strict Ford standards, these spark plugs help reduce fuel consumption, optimize emissions, and prevent false check engine lights, making them ideal for service intervals of up to 100,000 miles. Backed by Motorcraft's Service Parts Warranty, they are the original equipment choice for maintaining your vehicle's factory performance and reliability. Whether for domestic or import cars and trucks, Motorcraft Spark Plugs provide confidence and efficiency, ensuring your engine runs smoothly and efficiently. Product Features:<ul><li type=disc>Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.<li type=disc>Backed by Motorcraft's Service Parts Warranty<li type=disc>Exact fit for Ford, Lincoln and Mercury vehicles<li type=disc>Resistant to oxidation and arc erosion.<li type=disc>Multi-rib insulator protects against misfire.<li type=disc>Service intervals of up to 100,000 miles.<li type=disc>Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.<li type=disc>Motorcraft Spark Plugs are what was in the vehicle when it was manufactured<li type=disc>Motorcraft ignition components help prevent false check engine lights.

ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional. Product Features:<ul><li type=disc>Iridium is the latest in spark plug technology and is an exact replacement for vehicles original components<li type=disc>Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability<li type=disc>Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance<li type=disc>Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics<li type=disc>Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability<li type=disc>Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional<li type=disc>ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.<li type=disc>GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle<li type=disc>GM regularly updates production and service part designs to integrate new materials and technologies<li type=disc>Resistor Type: Equipped with a resistor to help reduce radio frequency interference, ensuring smooth and reliable engine performance.<li type=disc>Tapered Seat Type: Features a tapered seat type for a secure fit and optimal sealing in your vehicle's engine.

Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and offer service intervals of up to 100,000 miles. Designed with high-quality materials, they provide reliable performance for almost any application and are backed by Motorcraft's Service Parts Warranty. Motorcraft Spark Plugs are an exact fit for Ford, Lincoln, and Mercury vehicles and help prevent false check engine lights, ensuring your vehicle runs smoothly and efficiently. Product Features:<ul><li type=disc>Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.<li type=disc>Backed by Motorcraft's Service Parts Warranty<li type=disc>Exact fit for Ford, Lincoln and Mercury vehicles<li type=disc>Resistant to oxidation and arc erosion.<li type=disc>Multi-rib insulator protects against misfire.<li type=disc>Service intervals of up to 100,000 miles.<li type=disc>Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.<li type=disc>Motorcraft Spark Plugs are what was in the vehicle when it was manufactured<li type=disc>Motorcraft ignition components help prevent false check engine lights.<li type=disc>Enhanced Durability: Engineered to meet strict Ford engineering standards, Motorcraft Spark Plugs are designed for long-lasting performance.<li type=disc>Reduces Fuel Consumption: Specifically matched to engines to optimize fuel efficiency, helping you save on fuel costs while maintaining peak performance.

### What do spark plugs do?
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. 

### How often should you change your spark plugs?
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. 

### What are the symptoms of a bad spark plug?
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. 

### Can I replace spark plugs myself?
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](https://shop.advanceautoparts.com/c4/spark-plug-socket/-49996659), a [spark plug gap](https://shop.advanceautoparts.com/r/advice/car-maintenance/how-to-gap-spark-plugs) gauge, and a [torque wrench](https://shop.advanceautoparts.com/c4/torque-and-impact-wrench/-49996650). 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. 

### Will I notice a difference after changing my spark plugs?
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. 

### What are the different types of spark plugs that are available?
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. 

