2005 Audi S4 Spark Plugs

Essential 2005 Audi S4 Spark Plugs

Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP3923)

Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration

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$4.79
With over 100 years of engineering expertise and more than 11 billion plugs sold, Autolite Platinum spark plugs are designed and engineered in the USA to deliver exceptional performance. Featuring a high nickel alloy side electrode that maintains a precise gap and a full platinum tip that ensures virtually no gap erosion, these spark plugs offer long-lasting durability. The necked-down center electrode fires quicker and cleaner with less voltage, resulting in easier starts, quicker acceleration, and improved fuel economy compared to standard plugs.

Product Features:
  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip assures virtually no gap erosion for long life
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)
  • Exceptional Performance: Designed and engineered in the USA, Autolite Platinum Spark Plugs deliver superior performance with over 100 years of engineering expertise and more than 11 billion plugs sold.
  • Gasket Seat Type: Equipped with a gasket seat type, these spark plugs provide a secure and effective seal for optimal engine performance.
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NGK – Standard Spark Plug (Part No.F1000312421NGK)

Standard Spark Plug

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$11.12
The NGK Standard copper core spark plug provides OEM quality, consistent performance and extended long life.

Product Features:
  • Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
  • Corrugated Ribs Prevent Flashover
  • Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
  • Copper Core Aids in Heat Removal
  • Triple Seals Prevent Leakage
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Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP3923)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

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$9.99
Our best spark plug! 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 TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IK20TT (Part No.4702)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IK20TT

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$10.99
Durability of an OE style plug combined with Power & Torque of high performance.

Product Features:
  • 0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
  • 0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
  • DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
  • DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
  • Durability of an OE style plug combined with Power & Torque of high performance.
  • Withstands temperatures greater than 4000░ Fahrenheit
  • Iridium TT
  • Ultimate Endurance and Power: The DENSO Iridium TT Spark Plug features a 0.7mm Iridium Tip, ensuring over 100,000 miles of uncompromised performance.
  • Advanced Twin-Tip Technology: Developed from Original Equipment Specification Super Ignition Plug (SIP) design, combining a Fine Wire Iridium Center Electrode with a Needle Tip Platinum Ground Electrode.
  • Enhanced Fuel Economy and Lower Emissions: Drive around the Earth over 4 times with improved fuel efficiency and reduced emissions.
  • Premium Materials: Features an Iridium Center Electrode Tip and a Flat Seat Type for optimal performance and durability.
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Champion – Copper Plus Small Engine Spark Plug Dependable Performance OE Replacement RC7YC3 (Part No.444)

Copper Plus Small Engine Spark Plug Dependable Performance OE Replacement RC7YC3

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$3.49
This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Built to ISO and SAE standards, it offers dependable performance and durability. The OE type replacement plug resists fouling and boasts superior corrosion resistance. The copper core center electrode allows for accurate control of heat range for longer life, while the nickel center electrode tip material ensures consistent performance. With a flat seat type and resistor type, this spark plug is designed for proven performance in small engines.

Product Features:
  • Copper Plus – Dependable Performance and Durability
  • OE type replacement plug
  • Resists fouling
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Consistent Performance: Equipped with a nickel center electrode tip material and a flat seat type, this spark plug ensures consistent performance in small engines.
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DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK20 (Part No.5304)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IK20

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$11.79
Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).

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° 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 – Laser Platinum Spark Plug (Part No.F1000451269NGK)

Laser Platinum Spark Plug

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$20.02
NGK Laser Platinum spark plugs provide high ignitability and longer service life. Dual platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. The platinum disc welded to backside of ground electrode provides long life, faster starts and quicker acceleration. Laser Platinum spark plugs provide high ignitability and longer service life.

Product Features:
  • Laser welded Platinum center electrode tip
  • Platinum disc welded to backside of ground electrode provides long life
  • Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions
  • Best Platinum spark plug available
  • Original Equipment Manufacturer approved design
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DENSO – Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PK20PR-P8 (Part No.3245)

Double Platinum Spark Plug:  OE Performance, lasts 60K+ Miles, PK20PR-P8

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$9.79
Manufactured to the strictest OE performance, durability and emissions standards.

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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Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.3922)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

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$4.29
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed OES design requirements. Consider upgrading to Autolite Platinum, Double Platinum or Iridium XP plugs for improved engine performance. Copper core plugs are the industry standard.

Product Features:
  • Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • Multi-rib insulator reduces danger of “flash-over”
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
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Elring – Spark Plug Tube Seal (Part No.A8027313700ELR)

Spark Plug Tube Seal

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$19.30
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
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Ajusa – Spark Plug Tube Seal (Part No.A8027313700AJU)

Spark Plug Tube Seal

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$3.77
AJUSA makes OE-quality gaskets and seals for a growing number of European and Asian applications. The AJUSA Spark Plug Tube Seal is manufactured using the highest quality materials and is designed to withstand high temperature variations.

Product Features:
  • Stays cool at temperature up to 1800F
  • Designed to seal minor surface irregularities
  • No re-torque required
  • Teflon® coating optional
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Elring – Spark Plug Tube Seal (Part No.A8027313699ELR)

Spark Plug Tube Seal

from

$19.32
All-around safety and reliability: Elring oil seals are manufactured for a wide range of applications. Whether they are installed in camshafts, crankshafts or axles, the high-precision seals are guaranteed to offer outstanding performance. Elring oil seals are made from tailor-made elastomer compounds to ensure excellent functionality and a long service life. They are available in various sizes and are supplied with detailed installation instructions.

Product Features:
  • Premium-quality materials such as FPM, ACM and PTFE for superior operational reliability
  • Various designs specifically adapted to the area of application ensure excellent functionality and performance
  • High-performance FPM guarantees optimum leak tightness
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NGK – G-Power Spark Plug (Part No.F100098075NGK)

G-Power Spark Plug

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$12.77
The NGK G Power platinum tip spark plug provides improved fuel efficiency, lower emissions and quicker reliable starts. The fine platinum tip reduces the voltage requirements and is extremely durable under high heat combustion. Improved Fuel Efficiency, Lower Emissions, Quicker Starts.

Product Features:
  • Fine Wire Platinum Tipped Center Electrode Reduces Required Voltage for Better Starts, Superior Acceleration and Increased Fuel Economy
  • Trapezoid Cut Ground Electrode Reduces Quenching
  • Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
  • Corrugated Ribs Prevent Flashover
  • Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
  • Copper Core Aids in Heat Removal
  • Triple Seals Prevent Leakage
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DENSO – Standard U-Groove Spark Plug (Part No.F100032280ND)

Standard U-Groove Spark Plug

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$3.53
Denso Spark Plug Denso’s standard plugs have always offered a patented U-groove ground electrode producing for a larger, hotter spark. Copper core for better thermal conductivity. Machine rolled threads to reduce cross-threading and seizing . The plug insulator is constructed of purified alumina powder for extreme stress with 5 ribs to prevent flashover.

Product Features:
  • U-Groove Ground Electrode Promotes Ignitability and Decreases Quenching
  • Fully Projected Insulator Reduces Carbon Fouling
  • Machine Rolled Threads Prevent Seizing or Cross Threading During Installation and Removal
  • 100% Pre-Fired to Assure the Highest Quality Possible
  • Purified Alumina Powder Insulator Provides Exceptional Strength and Thermal Conductivity
  • Five Rib Insulator Prevents Flashover
  • Copper-Glass Seal Bonds Center Electrode and Insulator for a Gas-Tight Seal
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2005 Audi S4 Spark Plugs

Maybe you’re in the middle of a full rebuild of that 2005 Audi S4. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 38 different Spark Plugs in our inventory ranging from $3.77 to $19.32. That means you can find the exact parts or products you need to keep that 2005 Audi S4 running smoothly.

Spark Plugs are only as good as their brand. We stock 10 different brands to make sure you have plenty of trusted parts to choose from for your 2005 Audi S4. Autolite, NGK, and DENSO are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Spark Plugs for your 2005 Audi S4, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 3,891 reviews in this category, some of the top rated parts include DiamondFIRE Automotive Spark Plug: More Power, Saves Gas with 4.1 stars and Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition with 4.6 stars.

So if you’re in the market for aftermarket Spark Plugs to keep your 2005 Audi S4 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Spark Plugs Brands To Make Your 2005 Audi S4 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2005 Audi S4 demands trusted brand parts and products to keep it running. Many trusted brands of Spark Plugs make up Advance Auto Parts’ inventory, and all are ready to help make your S4 the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.

Popular ACDelco Spark Plugs

We carry ACDelco parts in our stock across Spark Plugs categories, plus more. For a 2005 Audi S4, our most popular ACDelco Spark Plugs include:
Double Platinum Spark Plug
from $9.79
(9)
Double Platinum Spark Plug
Spark Plugs

FAQs for 2005 Audi S4 Spark Plugs

What are the most purchased Spark Plugs for the 2005 Audi S4?

Out of 38 Spark Plugs for the 2005 Audi S4, the most popular in our inventory are:
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
from $9.99
This product is not rated
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
Spark Plugs

What are the top-rated 2005 Audi S4 Spark Plugs?

Top-rated Spark Plugs for your 2005 Audi S4 based on customer reviews/ratings are:
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
from $6.99
(184)
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas
“Great product”
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition
from $3.99
(105)
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition
“Very nice quality. Installed like factory. Ran great.”