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$26.99

NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover.

Product Features:

PREMIUM GRADE SILICONE: Designed to withstand harsh environments
OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression

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$8.69

Prenco Spark Plug Connectors are constructed in our Canadian facility using only premium quality components. All connectors are designed and constructed to match OE fitment and performance. Complete import/domestic coverage, OE quality, OE performance, and OE reliability.

Product Features:

OE-Equivalent and a direct fit application
High profile insulation to prevent arching.
Engineered to withstand extremes in temperatures

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$54.99

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$42.94

Bosch Knock Sensors are highly accurate and sensitive to detect engine knock, ensuring efficient performance and long life of your vehicle.

Product Features:

High Precision Even under Extreme Conditions
Improved efficiency and prolonged engine life
Linear signal over large frequency range

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$24.29

Manufactured to meet or exceed OE requirements; Delphi Knock Sensors help maximize engine performance with all fuels; Delphi Knock Sensors prevent against engine damage from pre-ignition knocking.

Product Features:

Delphi knock sensors help maximize engine performance with all fuels
Delphi knock sensors prevent against engine damage from pre-ignition knocking
Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
Ground-isolated design with 2-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
Self-generating piezoelectric design requires no power to the sensor

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$42.03

Every WSO ignition coil is developed and designed for its specific application, and engineered for maximum performance. WORLD SOURCEONE ignition coils are designed to operate reliably and dependably under all operating conditions and engine rpm ranges, providing the highest engine performance, low exhaust emissions, and fuel economy objectives. WSO Direct Ignition Coils are designed to adapt the required energy output to match engine-operating conditions and deliver the optimum energy level needed to ignite a diluted stratified charge.

Product Features:

OE-Equivalent and a direct fit application
Superior, reliable performance compared to competitive products
Lower cost alternative to original equipment
No additional time consuming steps needed for installation
Factory original equipment connectors
Improved coil efficiency reduces the need to generate excessive high voltage
Designed to provide durability and performance
Noise abatement technology to eliminate audible coil noise
Lower primary inductance provides high-speed performance
Maximum available voltage under all operating conditions
TS 16949 Certification

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$72.99

Delphi OE technology ignition products are validated to match the vehicles system; OE quality replacement parts for the right fit , form and function; Delphi coils provide OE performance, durability and electromagnetic capacity level requirements.

Product Features:

We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues
Delphi ignition coils are designed to operate as part of an integral engine management system to insert power into spark plugs and ensure fast starts; consistent engine performance and optimized fuel efficiency
Delphi uses winding process techniques to control the length of wire between adjacent windings; that’s important since more length means greater voltage differences and can create more pressure that could break down the insulation and wire coating
We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues

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$54.99

NGK ignition coils are manufactured to meet or exceed OE standards for the highest durability and operational performance, so they can be installed with confidence. NGK and their family of automotive products have over 80 year’s experience and are driven by extreme dedication to innovation, performance and quality. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK’s coil designs will outperform all others – far beyond operational environments a vehicle would actually experience

Product Features:

OE QUALITY: Vacuum-sealed premium epoxy resin and thermoplastic coil housings provide superior dielectric strength, voltage insulation and durability
OPTIMAL PERFORMANCE: Precision coil windings and laminations maximize outputs, custom NGK ASIC chipset optimizes efficiency, prevents component damage
EASE OF INSTALLATION: NGK Ignition Coils include ignition control module, premium high temperature coil boot, and jumper harnesses where required
THE NGK DIFFERENCE: Featuring superior materials and design enhancements.
EXTENSIVE TESTING: NGK ignition coils must pass extreme testing during manufacturing to ensure the highest quality and durability standards are met
PRODUCT ENGINEERING: Advanced flow and stress modeling systems preemptively identify and avoid common failure points found in OE and competitor coils

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$8.74

Prenco Spark Plug Connectors are constructed in our Canadian facility using only premium quality components. All connectors are designed and constructed to match OE fitment and performance. Complete import/domestic coverage, OE quality, OE performance, and OE reliability.

Product Features:

OE-Equivalent and a direct fit application
High profile insulation to prevent arching.
Engineered to withstand extremes in temperatures

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$12.49

CARQUEST Premium coil on plug boots are engineered to restore ignition boot reliability and performance. We have OE design providing an exact direct fit for your application and the performance and durability meet or exceed OE requirements. It offers excellent heat resistance as well as maximum protection against spark loss. With durable silicone compound for resistance to high heat or abrasion.

Product Features:

Provides excellent heat resistance as well as maximum protection against spark loss.
Durable silicone compound for resistance to high heat or abrasion
Spring included with the coil boot
Design for direct compatibility
OE design provides an exact fit for your application
Multipack provides one time replace all COP for better deal

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$56.59

BERU ignition module for modern transistor ignition systems with hall sensor or inductive sensor.

Product Features:

Well tried and tested OEM quality
Connections and housing corrosion protected
High thermal resistance and thus functional reliability
Depending on the version, also with cooling plate or thermally conductive paste included

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$221.99

Carquest premium engine management products provide the right ignition control module for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions. Designed to meet OE quality and performance standards using top-quality components, our sensors are the best choice for your maintenance and repair needs.

Product Features:

Thicker, more robust wire bonds for lasting reliability
Proprietary, application-specific integrated chips for proper performance
Fast-start circuitry for quick starts
Ultrasonically welded copper heat sinks to ensure heat transfer for long life
Laser trimming to precise specifications for OE function

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$9.99

This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:

Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
Durable construction – made from quality components to ensure reliable performance and a long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$55.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$67.05

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Copper alloy conductors ensure superior electrical conductivity with low resistive losses
Our parts are 100% tested to verify both mechanical and electrical switching performance
Robust design and high grade materials meet the stringent demands of today’s service professional
BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product

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$23.77

Ignition Switch

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$224.99

This replacement ignition switch is a direct replacement for a damaged or worn-out original equipment switch Made of quality materials for durability, this part has been tested to ensure a proper fit.

Product Features:

Ideal replacement – this ignition switch matches the fit and function of the original equipment switch to restore proper operation to the ignition circuit
Durable construction – this ignition switch is made of quality materials to ensure reliable performance and a long service life
Cost-effective solution – offers original equipment performance at competitive price
Quality tested – this part has undergone try-on testing to ensure a quality fit

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$50.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$128.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$24.53

Choosing from the comprehensive VIEROL product range means opting for outstanding quality. This is confirmed by the Q+ quality seal for parts in OEM quality MADE IN GERMANY. VIEROL AG is a leading automotive parts distributor located in Oldenburg, Germany. With the trademarks VAICO and VEMO are the service market leaders in more than 125 countries worldwide. As an internationally present automotive supplier, VIEROL AG specializes in electronic and electrical components for German and European vehicles. VIEROL AG quality brands VEMO and VAICO combine innovation and experience, technical expertise and practiced corporate values, commitment to precision and a passion for technology: the invisible, but unquestionable, optimal prerequisites for guaranteed product quality and globally recognized service. Choosing from the comprehensive VIEROL product range means opting for outstanding quality. 8 Male Pin Electrical Connectors. Black Housing

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$3.79

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Double Platinum spark plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires and increases durability of the plug. Consider upgrading to Autolite Iridium XP spark plugs for increased performance.

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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$6.79

With over 100 years of engineering expertise and over 11 billion plugs sold, Autolite delivers exceptional quality. Designed and engineered in the USA, these spark plugs feature platinum-to-platinum firing, virtually eliminating gap erosion and reducing misfires. The OE design and full-platinum tips on both the center and side electrodes ensure reduced gap wear, while the platinum ball welding process provides a consistent point of contact for enhanced adhesion. This results in optimized engine performance, longer life, and improved fuel economy. The gasket seat type further enhances the plug’s reliability and durability.

Product Features:

Works to optimize engine performance for a longer life and improved fuel economy
OE design
Full-platinum tips; platinum on both the center and side electrodes to promote reduced gap wear
Platinum ball welding process provides a consistent point of contact for enhanced adhesion
Gasket Seat Type: Equipped with a gasket seat type that enhances the spark plug’s reliability and durability.
Proven Quality: Backed by over 100 years of engineering expertise and over 11 billion plugs sold, Autolite delivers exceptional quality and performance.

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$4.79

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.

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)

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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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$5.29

The ground electrode is cut-back from the center electrode to provide a gap. The face of the ground electrode is concave to provide a constant gap to the center electrode. This plug is designed use in all aftermarket cylinder heads used in different types of racing venues including oval and road racing.

Product Features:

Opens spark face for better ignitability of flame kernel
Retains less heat, transfers heat to shell faster – reduces risk of pre-ignition
Dyno testing has shown proven power gains
Cut-back ground electrode evolved from practice of grinding back the side electrode

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$4.49

Dependable Performance, OE Replacement, RC9YC. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. The Copper Plus design ensures dependable performance and durability, while the copper core center electrode allows for accurate control of heat range, extending the spark plug’s life. Built to ISO and SAE standards, it offers superior corrosion resistance and proven performance. The nickel center electrode tip and flat seat type further enhance its reliability, making it an excellent choice for maintaining your engine’s efficiency.

Product Features:

Copper Plus – Dependable Performance and Durability
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
Built to ISO and SAE standards for proven performance
Enhanced Conductivity and Heat Control: The Champion Copper Plus Spark Plug features a copper core electrode that provides increased conductivity and heat control, ensuring good overall wear and extending the spark plug’s life.
Nickel Center Electrode Tip: Equipped with a nickel center electrode tip and a flat seat type, this spark plug ensures consistent and reliable performance.

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$12.99

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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$12.99

NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

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
PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
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 platinum alloy multi-ground electrode plugs
High Ignitability and Longer Service Life: NGK Laser Platinum spark plugs offer superior ignitability and extended service life compared to conventional nickel spark plugs.
Engineered for OE Applications: Specifically designed for Original Equipment (OE) applications, ensuring a perfect fit and optimal performance.
Enhanced Fuel Efficiency and Lower Emissions: These spark plugs contribute to improved fuel efficiency and reduced emissions, making them an eco-friendly choice.
Superior Anti-Fouling and Stable Idling: The advanced design provides stable idling and superior resistance to fouling, ensuring consistent engine performance.

1994 Audi S4 Ignition and Tune-Up Products

More 1994 Audi S4 Ignition and Tune-Up Products Categories

Essential 1994 Audi S4 Ignition and Tune-Up Products

NGK – Coil on Plug Boot (Part No.58928)

Prenco – Prenco Spark Plug Connector (Part No.F101086258PRN)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA4323)

Bosch – Knock Sensor (Part No.F602013723BOS)

Delphi – Knock Sensor (Part No.AS10169)

WSO – Direct Ignition Coil – (Coil on Plug) (Part No.F300586256WSO)

Delphi – Ignition Coil (Part No.GN10632)

NGK – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.48728)

Prenco – Prenco Spark Plug Connector (Part No.F101056457PRN)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7021)

Beru – Beru Ignition Control Unit (Part No.F6000160728BER)

Carquest Premium – Ignition Control Module (Part No.CBC1389)

Dorman – Help – Spark Plug Non-Foulers – 14mm Gasket Seat Long Reach (Part No.42004)

Carquest Premium – Ignition Switch (Part No.CSA1263)

Carquest – Ignition Switch (Part No.CS781)

Febi – Ignition Switch (Part No.M5050115228FEB)

Dorman – Ignition Lock Cylinder (Part No.924-728)

Carquest Premium – Ignition Switch (Part No.CSA1854)

Carquest Premium – Ignition Switch (Part No.CSC3574)

Vemo – Ignition Switch (Part No.M505063421VMO)

Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.3924)

Autolite – Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (Part No.APP3923)

Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP3922)

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

Autolite – Racing Resistor Spark Plug: Enables Performance, Handles Intense Conditions (Part No.AR3924)

Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RC9YC (Part No.344)

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, BKR8EIX (Part No.2668)

NGK – OE Series Laser Platinum Spark Plug: Semi-Surface Discharge Tip Design, BKR6EQUP (Part No.3199)

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