2025 Audi A8 Quattro Ignition and Tune-Up Products

Essential Ignition and Tune-Up Products for 2025 Audi A8 Quattros

Motorcraft – Spark Plug: Reliable Ignition with Nickel Electrode Design (Part No.SP-400-X)

Spark Plug: Reliable Ignition with Nickel Electrode Design

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$5.99
Spark Plug with a reliable ignition system features a standard center electrode design and nickel material for both the center and ground electrode tips, ensuring consistent performance and durability. The tapered seat type enhances the fit and sealing, making it an ideal choice for maintaining optimal engine efficiency. Crafted with high-quality nickel, this spark plug is built to withstand demanding conditions, offering long-lasting reliability and smooth ignition. Its precise engineering supports effective combustion, contributing to improved fuel economy and reduced emissions. Perfect for drivers seeking dependable ignition components, this spark plug delivers excellent value by combining robust construction with reliable functionality.

Product Features:
  • Designed with a standard center electrode for consistent and reliable ignition performance.
  • Nickel material used in both center and ground electrode tips ensures durability and long-lasting functionality.
  • Tapered seat type enhances fit and sealing, contributing to optimal engine efficiency.
  • High-quality construction withstands demanding conditions, providing smooth ignition and dependable operation.
  • Supports effective combustion, promoting improved fuel economy and reduced emissions.
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ACDelco – Double Platinum Spark Plug: Long-Lasting Performance & Durability (Part No.41-801)

Double Platinum Spark Plug: Long-Lasting Performance & Durability

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$10.99
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • 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
  • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
  • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
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DENSO – Iridium Long-Life Spark Plug: OE Performance, SK20BR11 (Part No.3471)

Iridium Long-Life Spark Plug: OE Performance, SK20BR11

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$17.79
Engineered to meet the highest OE performance, durability, and emissions standards, this Iridium Long-Life Spark Plug is a powerhouse of innovation and reliability. Featuring DENSO’s patented Iridium Alloy with a 90% Iridium fine wire center electrode, it delivers sustained spark performance for over 100,000 miles, lasting up to three times longer than conventional plugs. The platinum ground electrode ensures extended life, while the 360-degree laser welding process guarantees a superior bond and structural integrity. Designed to endure extreme temperatures exceeding 4,000 Deg F, it is ideal for high-performance ignition systems and special fuel setups. With a flat seat type and cutting-edge technology, this spark plug offers exceptional value, ensuring optimal engine performance and long-lasting durability.

Product Features:
  • Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
  • Platinum ground electrode for extended life
  • DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
  • Sustained spark performance over 100,000 miles
  • Lasts up to three times as long as conventional plugs
  • Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
  • Iridium Long Life
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP103)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

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$10.99
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:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-enhanced alloy technology ensures superior wear resistance for extended plug life.
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Autolite – Platinum Spark Plug (AP103): Improved Performance & Durability (Part No.AP103)

Platinum Spark Plug (AP103): Improved Performance & Durability

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$4.99
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, enhanced acceleration, and improved fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, ensuring reliable operation, and the nickel-plated shell resists corrosion for long-lasting durability. With a mid-projection standard center electrode and a tapered seat type, these performance-grade spark plugs deliver consistent results. The combination of platinum and nickel materials in the electrode tips further enhances reliability, making them a trusted choice for maintaining engine efficiency and longevity.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection center electrode design to deliver consistent and reliable performance.
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NGK – Laser Iridium Spark Plug (SILFER8C7ES): High Ignitability & Durability (Part No.91006)

Laser Iridium Spark Plug (SILFER8C7ES): High Ignitability & Durability

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$17.49
NGK Laser Iridium High Ignitability spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium High Ignitability 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. Laser Iridium High Ignitability spark plugs feature raised platinum pad or platinum fine wire tip on the ground electrode for even wear in distributorless ignition systems and improved spark performance.

Product Features:
  • ACTUAL OE or EQUIVALENT HIGH IGNITABILITY DESIGN: SPE tip & iridium alloy center electrode produce the most advanced OE spark plug technology
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • SPE DESIGN: Square platinum electrode shape of the ground electrode provides the best ignitability and service life for high heat engines
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Best for vehicles with OE SPE iridium alloy plugs
  • Superior Durability: The iridium-tipped center electrode is six times harder than platinum, ensuring long-lasting performance and reliability.
  • Enhanced Spark Performance: Features a raised platinum pad or platinum fine wire tip on the ground electrode for even wear and improved spark performance in distributorless ignition systems.
  • Quality Assurance: Tested to the highest standards to ensure quality and durability, providing peace of mind for vehicle owners.
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DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK20TR11 (Part No.3253)

Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK20TR11

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$12.99
The Double Platinum Spark Plug is engineered to meet the highest OE standards for performance, durability, and emissions compliance. Featuring OE-grade platinum on both the center and ground electrodes, it ensures superior thermal conductivity and sustained spark performance for over 60,000 miles. Its premium shell construction with machine-rolled threads enhances durability and ensures a secure fit, while the flat seat type provides reliable sealing. Designed to reduce secondary required voltage, this spark plug increases ignition efficiency, delivering consistent performance and fewer misfires. The double platinum design not only boosts longevity but also minimizes maintenance, making it a reliable choice for drivers and mechanics alike. With its ability to satisfy customers and reduce shop comebacks, this spark plug offers exceptional value and peace of mind for your vehicle’s ignition system.

Product Features:
  • OE grade platinum on both center and ground electrodes
  • Premium shell construction with machine-rolled threads
  • Superior thermal conductivity
  • Sustained spark performance over 60,000 miles
  • Reduced secondary required voltage, increased ignition efficiency
  • Satisfied customers, reduced shop comebacks
  • Double Platinum
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ACDelco – Copper Core Spark Plug: Reliable Heat Transfer & Durability (Part No.41-629)

Copper Core Spark Plug: Reliable Heat Transfer & Durability

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$6.29
ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
  • Available for use in Marine applications
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP103)

Double Platinum Spark Plug: Enhanced Durability & Performance

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$6.99
The Double Platinum Spark Plug is engineered for exceptional durability and performance, 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. Its yttrium-enhanced ground electrode delivers superior heat transfer, allowing it to withstand high temperatures and pressures for extended durability. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is built to deliver consistent ignition and efficiency. Both the center and ground electrode tips are crafted from platinum, ensuring robust functionality and reliability. Designed to meet the demands of modern engines, this spark plug offers outstanding value and long-lasting performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and tapered seat type to ensure consistent ignition and improved engine efficiency.
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5224)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

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$10.99
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:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
  • Designed and Engineered in the USA: Reflects over 100 years of Autolite’s engineering experience and expertise.
  • Gasket Seat Type: Ensures a secure and proper fit for optimal performance.
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK24 (Part No.5311)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK24

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$9.99
The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering enhanced spark energy for maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures unmatched durability and precision. Its U-groove and taper-cut ground electrode design optimizes flame propagation, improving overall engine performance. Built to withstand extreme temperatures exceeding 4000 Deg F, it is burnished with nickel plating for exceptional high-temperature endurance and superior corrosion resistance. Designed for versatility, it offers a wide range of part numbers to fit thousands of applications, including classic and collector cars. With its flat seat type and premium iridium tip material, this spark plug guarantees long-lasting performance and reliability, making it an ideal choice for those seeking maximum spark energy and durability.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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NGK – Ruthenium HX Spark Plug (FR6AHX-S): High Ignitability & Durability (Part No.94279)

Ruthenium HX Spark Plug (FR6AHX-S): High Ignitability & Durability

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$16.99
NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug, Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.

Product Features:
  • HIGH IGNITABILITY DOUBLE FINE ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with opposed fine wire platinum ground electrode
  • RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
  • PLATINUM PIN TYPE GROUND ELECTRODE: Provides more complete fuel burn, quicker throttle response, smoother idle and better cold starts
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modern vehicles using OE DFE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
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Champion – Double Platinum Power Spark Plug (RC10PLPB4): Enhanced Ignitability & Durability (Part No.7436)

Double Platinum Power Spark Plug (RC10PLPB4): Enhanced Ignitability & Durability

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$9.29
The Double Platinum Power Spark Plug (RC10PLPB4) is engineered for enhanced ignitability and long-lasting durability, making it a premium choice for reliable engine performance. Featuring a fine-wire platinum center electrode and a platinum pad ground electrode, this spark plug ensures greater wear resistance and a sharper, more focused spark. The innovative Heat-Active alloy allows the electrodes to maintain an optimal operating temperature under all engine loads, ensuring consistent performance and efficiency. Its V-trimmed ground electrode design further enhances spark focus, while the resistor type construction minimizes electrical interference. Designed as a standard replacement with a flat seat type, this spark plug is built to deliver powerful performance and maintain stable operation, making it an excellent choice for drivers seeking durability and precision in their ignition system.

Product Features:
  • Double Platinum Power – Premium Spark Plug. More Powerful Performance.
  • Platinum center and ground electrode for greater wear resistance
  • Maintains stable operating temperature under all engine loads
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
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Champion – Copper Plus Spark Plug (RS9YC): Dependable Performance & Durability (Part No.304)

Copper Plus Spark Plug (RS9YC): Dependable Performance & Durability

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$4.99
Copper Plus spark plug delivers dependable performance and durability, making it an ideal choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. The nickel-tipped center and ground electrodes enhance conductivity while resisting corrosion, ensuring reliable ignition under various conditions. Designed to meet ISO and SAE Standards, this spark plug guarantees proven performance and compatibility with standard replacement needs. Its tapered seat type and built-in resistor further optimize functionality, making it a trusted solution for smooth engine operation. Invest in this high-quality spark plug for superior reliability and value.

Product Features:
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IXUH22 (Part No.5353)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IXUH22

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$14.99
Experience unmatched ignition performance with the world’s smallest Iridium Center Electrode, measuring just 0.4mm, designed to deliver maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures exceptional durability and precision. The U-groove and taper-cut ground electrode enhance flame propagation, optimizing engine performance. Built to withstand extreme temperatures exceeding 4000 Deg F, it features burnished nickel plating for superior corrosion resistance and high-temperature endurance. Crafted with an iridium center electrode tip and a flat seat type, this spark plug is compatible with a wide range of vehicles, including classic and collector cars. Whether you’re seeking enhanced performance or long-lasting reliability, this spark plug offers the perfect balance of cutting-edge technology and durability.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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ACDelco – Copper Core Spark Plug: Reliable Performance & Efficient Operation (Part No.41-602)

Copper Core Spark Plug: Reliable Performance & Efficient Operation

from

$6.29
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. 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:
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • High-Quality Copper Core: Designed with high-quality copper cores for reliable performance and efficient operation.
  • Nickel Center Electrode Tip: Features a nickel center electrode tip for enhanced durability and consistent performance.
  • OE Replacement: These spark plugs are true OE parts, originally installed or validated by General Motors for GM vehicles.
  • Outstanding Suppression Characteristics: Engineered to deliver outstanding suppression characteristics, ensuring smooth and efficient engine performance.
  • Versatile Applications: Providing a high-quality replacement for a wide range of vehicles.
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Motorcraft – Double Platinum Spark Plug: Enhanced Durability & Reliability (Part No.SP-485)

Double Platinum Spark Plug: Enhanced Durability & Reliability

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$4.79
Double Platinum Spark Plug by Motorcraft is engineered to deliver exceptional durability and reliability, making it the ideal choice for Ford, Lincoln, and Mercury vehicles. Designed with platinum center and ground electrode tips, these spark plugs resist oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator minimizes misfires, while the gasket seat type guarantees a precise fit. With service intervals of up to 100,000 miles, these spark plugs optimize emissions, reduce fuel consumption, and eliminate misfires, providing a smoother driving experience. Backed by Motorcraft’s Service Parts Warranty, they are crafted from high-quality materials to meet strict Ford engineering standards, offering original equipment performance for a wide range of domestic and import cars and trucks. Motorcraft ignition components also help prevent false check engine lights, giving you confidence in your vehicle’s reliability. These spark plugs are what your vehicle was equipped with at the factory, ensuring compatibility and peace of mind.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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Autolite – Platinum Spark Plug (AP3924): Improved Performance & Durability (Part No.AP3924)

Platinum Spark Plug (AP3924): Improved Performance & Durability

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$4.99
The Autolite Platinum spark plug is a high-performance solution designed to enhance your engine’s efficiency and longevity. Featuring a platinum center electrode firing tip, it ensures quicker firing, smoother starts, and improved fuel efficiency while resisting gap erosion for an extended service life. Its high alumina ceramic insulator provides excellent thermal conductivity and superior insulation, boosting overall strength and reliability. The multi-rib insulator design prevents flash-over, while the nickel-plated shell offers exceptional corrosion resistance, ensuring durability even in demanding conditions. With a mid-projection standard center electrode and a flat seat type, this spark plug is tailored for optimal performance in older engine designs. The combination of a platinum tip and nickel ground electrode makes it a dependable choice for those seeking enhanced acceleration and long-lasting performance. Whether you’re maintaining or upgrading, this performance-grade spark plug delivers exceptional value and reliability.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection center electrode and flat seat type, optimizing compatibility and performance in older engine designs.
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK20L (Part No.5358)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK20L

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$11.79
The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering unmatched spark precision for maximum combustion efficiency. Engineered with a patented 360-degree laser welding assembly process, this spark plug ensures exceptional durability and reliability under extreme conditions. Its U-groove and taper-cut ground electrode design optimizes flame propagation, enhancing engine performance. Built to withstand temperatures exceeding 4000 degrees Fahrenheit, it is burnished with nickel plating for superior high-temperature endurance and corrosion resistance. Designed for versatility, it offers a wide range of part numbers to fit thousands of applications, including classic and collector cars. With its Iridium tip and flat seat type, this spark plug is the ultimate choice for drivers seeking maximum spark energy, durability, and long-lasting performance.

Product Features:
  • World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
  • Patented 360-degree laser welding assembly process
  • U-groove and taper cut ground electrode to maximize flame propagation.
  • Withstands temperatures greater than 4000 degree Fahrenheit
  • Burnished nickel plating for high temperature endurance and superior corrosion resistance
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Iridium Power
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NGK – G-Power Platinum Spark Plug (BKR6EGP): Enhanced Durability & Efficiency (Part No.7092)

G-Power Platinum Spark Plug (BKR6EGP): Enhanced Durability & Efficiency

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$8.49
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

Product Features:
  • SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
  • PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
  • TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
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DENSO – U-Groove Spark Plug: OE Performance, K20PBR-S10 (Part No.5061)

U-Groove Spark Plug: OE Performance, K20PBR-S10

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$7.99
The U-Groove Spark Plug features an OEM-specified special ground electrode configuration designed for optimal performance and reliability. Its precision machine-rolled threads minimize the risk of seizing or cross-threading, making it ideal for delicate aluminum heads. With a durable nickel center electrode tip, this spark plug ensures long-lasting performance, boasting a lifespan of over 30,000 miles. Pre-fired for dependable operation, it delivers consistent ignition and smooth engine performance. The flat seat type and wide range of part numbers make it compatible with thousands of applications, including classic and collector cars. Built to last twice as long as conventional plugs, this spark plug offers exceptional value and durability, making it a trusted choice for maintaining OE performance in your vehicle.

Product Features:
  • OEM specified special ground electrode configuration
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • 100 percent pre-fired to assure reliable operation
  • U-Groove Conventional
  • Durable Nickel Center Electrode Tip: Ensures long-lasting performance and reliability, with a lifespan of over 30,000 miles.
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NGK – Iridium IX Spark Plug (BKR8EIX): Extreme Ignitability & Durability (Part No.2668)

Iridium IX Spark Plug (BKR8EIX): Extreme Ignitability & Durability

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$17.99
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:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhanced fuel efficiency, making them ideal for performance enthusiasts.
  • Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.
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E3 – DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency (Part No.E3.53)

DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency

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$8.49
The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “diamond-shaped” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output – up to 6% on average – and better fuel efficiency, saving you money while reducing engine carbon deposits. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. With its advanced technology, this spark plug not only boosts performance but also promotes cleaner combustion, making it a smart upgrade for any vehicle.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
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Motorcraft – Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption (Part No.SP-497)

Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption

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$7.79
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. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfires, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, these spark plugs also help prevent false check engine lights and offer service intervals of up to 100,000 miles. Crafted with high-quality materials, Motorcraft Spark Plugs deliver reliable performance for a broad range of applications, including domestic and import cars and trucks of all makes and sizes.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Enhanced Durability: Engineered to meet strict Ford engineering standards, these spark plugs are designed to provide long-lasting performance with a platinum center and ground electrode tip that resist oxidation and arc erosion.
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Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-406-A)

Standard Spark Plug: Enhances Durability & Reduces Misfires

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$2.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for optimal performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. Resistant to oxidation and arc erosion, they feature a multi-rib insulator to protect against misfires and offer service intervals of up to 100,000 miles. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles, ensuring reliable performance for almost any application and helping to prevent false check engine lights.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Engineered for Optimal Performance: Motorcraft Spark Plugs are designed to meet strict Ford engineering standards, ensuring optimal performance and reliability for Ford, Lincoln, and Mercury vehicles.
  • Improves Fuel Efficiency: Specifically matched to engines, these spark plugs help reduce fuel consumption and optimize emissions, contributing to better fuel efficiency.
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Motorcraft – High-Performance Spark Plug: Enhances Fuel Efficiency & Reliability (Part No.SP-497-X)

High-Performance Spark Plug: Enhances Fuel Efficiency & Reliability

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$8.29
The Motorcraft High-Performance Spark Plug is meticulously engineered to deliver unmatched ignition performance, ensuring reliable starts and optimal fuel efficiency for every drive. Featuring a fine wire center electrode design with a platinum tip and a nickel ground electrode, this spark plug is built for precision and durability. Its gasket seat type ensures a secure fit, making it a dependable choice for high-performance engines. Designed to withstand demanding conditions, it maintains consistent performance, helping your vehicle operate at its peak. Whether you’re focused on fuel savings or reliable ignition, this spark plug offers exceptional value and long-lasting quality. Trust Motorcraft for dependable performance and superior craftsmanship in every mile.

Product Features:
  • Enhances Fuel Efficiency: Engineered to optimize fuel efficiency, ensuring you get the most out of every gallon.
  • Superior Ignition Performance: Designed for reliable starts and consistent performance, providing peace of mind on every drive.
  • Exceptional Durability: Crafted with precision to withstand the demands of high-performance engines, ensuring long-lasting use.
  • Consistent Performance: Maintains your vehicle’s peak performance, making it an ideal choice for regular maintenance.
  • Quality and Dependability: Trust Motorcraft for high-quality spark plugs that deliver dependable performance in every drive.
  • Enhances Fuel Efficiency: Engineered to optimize fuel efficiency, ensuring you get the most out of every gallon.
  • Superior Ignition Performance: Designed for reliable starts and consistent performance, providing peace of mind on every drive.
  • Exceptional Durability: Crafted with precision to withstand the demands of high-performance engines, ensuring long-lasting use.
  • Consistent Performance: Maintains your vehicle’s peak performance, making it an ideal choice for regular maintenance.
  • Quality and Dependability: Trust Motorcraft for high-quality spark plugs that deliver dependable performance in every drive.
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NGK – V-Power Nickel Spark Plug (BKR6E): Reliable Performance & Ignitability (Part No.6962)

V-Power Nickel Spark Plug (BKR6E): Reliable Performance & Ignitability

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$6.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
  • RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
  • NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
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NGK – Laser Platinum Spark Plug (PFR6W-TG): High Ignitability & Longevity (Part No.5547)

Laser Platinum Spark Plug (PFR6W-TG): High Ignitability & Longevity

from

$28.99
Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire platinum alloy center electrode provides consistent performance
  • PLATINUM ALLOY CENTER ELECTRODE: Longer wearing and higher temperature resistance compared to traditional nickel spark plugs
  • OE SPECIFIED MULTI-GROUND ELECTRODE: Combines performance of a fine wire spark plug with fouling prevention of a multiple ground electrode plug
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Best for vehicles with OE fine wire platinum alloy plugs
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Upgrade your 2025 Audi A8 Quattro with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2025 Audi A8 Quattro, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Audi or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your A8 Quattro functioning at its best. At Advance Auto Parts, we offer a wide selection of 4 Ignition and Tune-Up Products for the 2025 Audi A8 Quattro, designed to meet your needs without breaking the bank.

Affordable Prices and Wide Selection

Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 2025 Audi A8 Quattro at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $4.99 to $10.99, with an average price of $6.99. Our 4 Ignition and Tune-Up Products in stock come from trusted brands, so you’re sure to find the right part for your 2025 Audi A8 Quattro without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2025 Audi A8 Quattro, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Autolite, and more. Autolite Ignition and Tune-Up Products start at just $4.99 and boast an impressive 4.6 stars average rating from customers. With 247 customer reviews and counting, our 2025 Audi A8 Quattro Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Belts and Hoses, Batteries and Chargers and more to make sure your 2025 Audi A8 Quattro is always ready to roll. We’re committed to providing you with everything you need to keep your A8 Quattro in top shape, all in one place. Start shopping confidently below for your 2025 Audi A8 Quattro!

Best-Selling Spark Plugs for 2025 Audi A8 Quattros

Enhance the driving experience in your Audi with 4 quality Spark Plug components, starting at $4.99.

Autolite – Platinum Spark Plug (AP3924): Improved Performance & Durability (Part No.AP3924)

Platinum Spark Plug (AP3924): Improved Performance & Durability

from

$4.99
The Autolite Platinum spark plug is a high-performance solution designed to enhance your engine’s efficiency and longevity. Featuring a platinum center electrode firing tip, it ensures quicker firing, smoother starts, and improved fuel efficiency while resisting gap erosion for an extended service life. Its high alumina ceramic insulator provides excellent thermal conductivity and superior insulation, boosting overall strength and reliability. The multi-rib insulator design prevents flash-over, while the nickel-plated shell offers exceptional corrosion resistance, ensuring durability even in demanding conditions. With a mid-projection standard center electrode and a flat seat type, this spark plug is tailored for optimal performance in older engine designs. The combination of a platinum tip and nickel ground electrode makes it a dependable choice for those seeking enhanced acceleration and long-lasting performance. Whether you’re maintaining or upgrading, this performance-grade spark plug delivers exceptional value and reliability.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Incorporates a mid-projection center electrode and flat seat type, optimizing compatibility and performance in older engine designs.
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Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP3924)

Double Platinum Spark Plug: Enhanced Durability & Performance

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$6.99
Double Platinum Spark Plug offers enhanced durability and performance with its platinum-to-platinum design, effectively reducing gap erosion and minimizing misfires for a longer service life. Engineered for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining 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 reliable operation. Featuring a mid-projection center electrode and flat seat type, this performance-grade spark plug is built with platinum-tipped electrodes for consistent ignition and lasting reliability. Designed to deliver exceptional value, it is a dependable choice for those seeking improved engine efficiency and longevity.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and flat seat type to ensure consistent ignition and reliable performance in demanding conditions.
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Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.3924)

Copper Resistor Spark Plug: Quick Starts & Enhanced Durability

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$4.99
Autolite Copper spark plugs are crafted to ensure reliable performance and durability for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are designed for extended life, while the mid-projection center electrode enhances ignition efficiency. Built with a high alumina multi-rib ceramic insulator, these plugs offer superior thermal conductivity and insulation, boosting strength and reliability. The nickel-plated shell provides exceptional corrosion resistance, making them ideal for long-term use. With a flat seat type and integrated resistor, these spark plugs deliver quick starts and meet performance expectations, offering great value for regular-grade applications.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • The integrated resistor ensures quick starts and optimized performance, making it a reliable choice for regular-grade applications.
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Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP3924)

Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition

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$10.99
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:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
  • Double Iridium-enhanced alloy center electrode ensures superior wear resistance for extended performance life.
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Top-Rated Ignition and Tune-Up Products Brands For Your 2025 Audi A8 Quattro

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2025 Audi A8 Quattros. Below you’ll find some of our best rated Ignition and Tune-Up Products from Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 2025 A8 Quattro start at just $4.99 and are rated as high as 4.6 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Autolite 2025 Audi A8 Quattro Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2025 Audi A8 Quattro, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Autolite ticks all of those boxes. We offer a wide selection of Autolite Ignition and Tune-Up Products, specifically designed for the 2025 Audi A8 Quattro. With over 3 Autolite brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.99, with an average price of just $5.66. Plus, with over 247 customer reviews and an average rating of 4.6 stars, you can trust that our Autolite Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
Platinum Spark Plug (AP3924): Improved Performance & Durability
from $4.99
(126)
Platinum Spark Plug (AP3924): Improved Performance & Durability
“The Subaru I put these in runs great now. It eliminated my hesitation problem. My plugs that came out didn’t look bad.. so I prefer these guys over th”