2015 Subaru Legacy Ignition and Tune-Up Products

Below you will find various in-demand Subaru Ignition and Tune-Up Products, components and accessories for your 2015 Legacy. Advance Auto Parts has popular Legacy parts like Ignition Switches, Ignition Sensors, Spark Plugs and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other Legacy model years including 2013, 2014, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and more. Select a category of 2015 Subaru Legacy Ignition and Tune-Up Products below and start saving instantly.

Popular 2015 Subaru Legacy Ignition and Tune-Up Products Categories

Ignition Switch Bulbs

Essential Ignition and Tune-Up Products for 2015 Subaru Legacies

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$23.99

Upgrade your vehicle with ZEVO® LED miniature bulbs for added style, performance, and the many benefits of LEDs. Instantly enhance the interior and exterior lighting applications of your vehicle with a modern bright white light for head-turning style and increased visibility by other motorists. Easy-to-install with a robust design and high-quality components, ZEVO replacement bulbs are backed by a limited warranty to provide exceptional performance through the life of the vehicle. Also available in an array of colors to update your car or truck.

Product Features:

HIGH EFFICIENY: Delivers greater clarity with less power consumption and longer bulb life when compared to standard incandescent bulbs
RELIABLE: Thermal management to maximize life, matched with robust design that withstands temperature and shock for optimal performance
NON-POLARITY DESIGN: Plug & play easy installation; SYLVANIA ZEVO LED bulbs light on two sides and can be installed either direction
INSTANT ON: Provide full brightness instantly, giving drivers around you more time to react, compared to the slower light-up with Incandescent bulbs
BRIGHT WHITE LIGHT: Ideal for use in Daytime running lights (DRL), back up/reverse, map, dome, trunk, cargo and license plate light bulb replacement
HYPERFLASH: For some vehicles, installing a load equalizer may be required to eliminate hyper flash or dashboard error messages
EASY DIY INSTALLATION: A direct replacement for the factory bulbs in your vehicle, no modification required
SMART MAINTENANCE: Always replace bulbs in pairs to ensure equal brightness and color.
SAFETY: High-quality SYLVANIA bulbs are designed to perform to all relevant safety standards set for the lighting application.
TRUSTED BRAND: SYLVANIA is a trusted OEM automotive lighting manufacturer, with over 100 years of superior optical engineering experience

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$10.99

Champion Iridium spark plug is engineered for drivers who demand peak performance and durability. Featuring a fine-wire iridium center electrode and a platinum-enhanced ground electrode, this premium spark plug ensures sharper spark focus and greater ignitability, delivering maximum engine efficiency. The V-trimmed ground electrode design promotes consistent performance, while the Heat-Active alloy allows the electrodes to quickly reach and maintain optimal operating temperatures under all engine loads. Built with a flat seat type and resistor technology, it ensures reliable operation and compatibility with a wide range of vehicles. Designed for performance-grade applications, this spark plug offers exceptional longevity and stable performance, making it the ultimate choice for those seeking to enhance their engine’s power and reliability.

Product Features:

Champion Iridium – Maximum Performance. Premium Spark Plug
Iridium center electrode delivers maximum life
Fine-wire center electrode and V-trimmed for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Maintains stable operating temperature under all engine loads
Heat-Active alloy allows electrodes to reach optimal temperature quickly

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$26.99

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 dur

Product Features:

ACTUAL OE or EQUIVALENT HIGH IGNITABILITY DESIGN: PSPE tip and 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
PSPE DESIGN: Projected 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 PSPE iridium alloy plugs

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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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$8.49

The Champion Iridium Spark Plug (RC10WYPB4) is engineered for drivers who demand peak performance and durability. Featuring a fine-wire iridium center electrode and an iridium-platinum ground electrode, this premium spark plug ensures maximum ignitability and a sharper spark focus for enhanced engine efficiency. The V-trimmed ground electrode design promotes precise spark delivery, while the Heat-Active alloy enables the electrodes to quickly reach and maintain optimal operating temperatures under all engine loads. Built with a flat seat type and resistor technology, it provides stable performance and reduces interference. Designed for longevity, the iridium center electrode offers exceptional wear resistance, making it ideal for high-performance applications. Whether you’re looking to boost your vehicle’s power or maintain consistent performance, this spark plug delivers unmatched reliability and value.

Product Features:

Champion Iridium – Maximum Performance. Premium Spark Plug
Iridium center electrode delivers maximum life
Fine-wire center electrode and V-trimmed for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Maintains stable operating temperature under all engine loads
Heat-Active alloy allows electrodes to reach optimal temperature quickly

from

$10.99

ACDelco Professional Double Platinum Spark Plugs are premium aftermarket plugs, and are a high quality replacement for many vehicles on the road today. 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.

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 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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$23.99

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 applica

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 fine wire platinum alloy plugs

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$111.99

Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.

Product Features:

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
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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$92.99

Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$104.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$141.99

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
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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$96.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$109.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$99.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$34.99

Product Features:

SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
EPDM inner insulation stops power-robbing voltage leaks.
With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
Excellent interference suppression and consistent performance
Easy lock terminals for more convenient installation.
Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
Broad coverage available for most vehicles on the road today
Include grease pack to ensure easy installation and removal

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$7.99

Carquest Premium spark plug boots are engineered to restore ignition boot reliability and performance. They are designed to meet or exceed original equipment (O.E.) specifications for fit, form and function. Our spark plug boots offer excellent heat resistance as well as maximum protection against spark loss. Carquest Premium spark plug boots are built with a durable silicone compound for resistance to high heat and abrasion, resulting in a longer-lasting ignition repair.

Product Features:

Product Features:

OE design provides an exact fit for your application
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 spark plug boot
Design for direct compatibility
Multipack provides one time replace all COP for better deal

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$41.99

Product Features:

SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
EPDM inner insulation stops power-robbing voltage leaks.
With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
Excellent interference suppression and consistent performance
Easy lock terminals for more convenient installation.
Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
Broad coverage available for most vehicles on the road today
Include grease pack to ensure easy installation and removal

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$41.99

Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$158.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$104.99

Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$107.99

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$169.99

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$95.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$103.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

from

$56.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

from

$105.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$96.99

Delphi’s ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We offer a wide range of sensors, including ABS, camshaft, crankshaft, knock, EGT, MAP, temperature, throttle position, and vehicle speed sensors for a variety of vehicle applications. All of our sensors are tested and calibrated to OE standards, ensuring accurate readings, which helps to reduce comebacks.

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 two-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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$82.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

Upgrade your 2015 Subaru Legacy with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2015 Subaru Legacy, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Subaru or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your Legacy functioning at its best. At Advance Auto Parts, we offer a wide selection of 37 Ignition and Tune-Up Products for the 2015 Subaru Legacy, designed to meet your needs without breaking the bank. From Ignition Switch replacements to Ignition Sensors upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

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 2015 Subaru Legacy at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $2.99 to $123.99, with an average price of $36.02. Our 37 Ignition and Tune-Up Products in stock come from 9 trusted brands, so you’re sure to find the right part for your 2015 Subaru Legacy 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 2015 Subaru Legacy, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like NGK, DENSO, Autolite, and more. NGK Ignition and Tune-Up Products start at just $14.99 and boast an impressive 4.8 stars average rating from customers. DENSO and Autolite also bring quality to the table, with Ignition and Tune-Up Products available starting at $3.99, and at an average 4.6 stars rating. With 1,610 customer reviews and counting, our 2015 Subaru Legacy 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 Batteries and Chargers, Oil and Lubricants and more to make sure your 2015 Subaru Legacy is always ready to roll. We’re committed to providing you with everything you need to keep your Legacy in top shape, all in one place. Start shopping confidently below for your 2015 Subaru Legacy!

Best-Selling Ignition Switches for 2015 Subaru Legacies

Enhance the driving experience in your Subaru with 1 quality Ignition Switch components, starting at $23.99.

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$23.99

HIGH EFFICIENY: Delivers greater clarity with less power consumption and longer bulb life when compared to standard incandescent bulbs
RELIABLE: Thermal management to maximize life, matched with robust design that withstands temperature and shock for optimal performance
NON-POLARITY DESIGN: Plug & play easy installation; SYLVANIA ZEVO LED bulbs light on two sides and can be installed either direction
INSTANT ON: Provide full brightness instantly, giving drivers around you more time to react, compared to the slower light-up with Incandescent bulbs
BRIGHT WHITE LIGHT: Ideal for use in Daytime running lights (DRL), back up/reverse, map, dome, trunk, cargo and license plate light bulb replacement
HYPERFLASH: For some vehicles, installing a load equalizer may be required to eliminate hyper flash or dashboard error messages
EASY DIY INSTALLATION: A direct replacement for the factory bulbs in your vehicle, no modification required
SMART MAINTENANCE: Always replace bulbs in pairs to ensure equal brightness and color.
SAFETY: High-quality SYLVANIA bulbs are designed to perform to all relevant safety standards set for the lighting application.
TRUSTED BRAND: SYLVANIA is a trusted OEM automotive lighting manufacturer, with over 100 years of superior optical engineering experience

Most Popular 2015 Subaru Legacy Ignition Sensors

Customize your Subaru with 3 Ignition Sensors products like Knock Sensors, all priced under $107.99.

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$105.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

from

$107.99

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$63.99

Check engine light on and vehicle running rough? Could be a failed knock sensor. This ignition knock sensor kit combines both necessary sensors and the wiring harness that joins them for a complete repair in one package.

Product Features:

Complete solution – this knock sensor kit includes two knock sensors and the wiring harness that connects them
Plug-and-play installation – matches original wiring harness, requiring no cutting or splicing
Quality assured – benchmarked against original components for performance and quality
Excellent value – original equipment quality at significant cost savings

Top Picks for 2015 Subaru Legacy Spark Plugs

Upgrade Subaru Legacies with top-quality Spark Plugs parts, including 28 OEM and aftermarket selections for your 2015 model.

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from

$21.49

Engineered for unmatched performance, this Iridium Long-Life Spark Plug is crafted with DENSO’s patented Iridium Alloy, featuring a fine wire center electrode for superior ignition efficiency. Its Platinum Needle Tip Ground Electrode ensures higher spark energy while minimizing heat quenching, making it ideal for high-performance ignition systems. Built to endure extreme temperatures exceeding 4,000 Deg F, this spark plug is designed to last up to three times longer than conventional plugs, delivering sustained spark performance for over 100,000 miles. The 360-degree laser welding process guarantees a robust bond and structural integrity, ensuring reliability under demanding conditions. With a flat seat type and OE-level precision, this spark plug meets the highest standards for durability, emissions, and performance, making it a long-lasting and cost-effective solution for your vehicle’s ignition system.

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
Platinum Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
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 (SIP)

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$26.99

ACTUAL OE or EQUIVALENT HIGH IGNITABILITY DESIGN: PSPE tip and 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
PSPE DESIGN: Projected 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 PSPE iridium alloy plugs

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$12.99

Experience the perfect blend of durability and performance with this Iridium TT Spark Plug. Engineered with a 0.4mm Iridium Center Electrode, the world’s smallest diameter, it maximizes firing potential for unmatched ignition efficiency. The 0.7mm Needle Tip Ground Electrode enhances spark energy while minimizing heat quenching, ensuring consistent performance. Built with DENSO’s patented Iridium-Rhodium alloy formula, this spark plug boasts the highest concentration of iridium for superior durability, even under extreme conditions exceeding 4000 Deg F. The 360-degree laser welding process guarantees a robust bond and structural integrity, making it a reliable choice for long-term use. Designed to deliver the durability of an OE-style plug while enhancing power and torque, this spark plug is a high-performance upgrade for your vehicle. With its flat seat type and advanced materials, it ensures optimal compatibility and efficiency, making it a valuable addition to any engine.

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 and Torque of high performance.
Withstands temperatures greater than 4000 degree Fahrenheit
Iridium TT

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$3.99

Autolite Copper spark plugs are designed to deliver reliable performance, ensuring quick starts and the power your vehicle demands. Featuring a copper core center electrode, these plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrodes provide extended life and durability. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, offering superior strength. With a corrosion-resistant nickel-plated shell, these spark plugs are built to withstand the test of time. Engineered for optimal fuel efficiency, they help you save on gas while delivering smooth acceleration for an improved driving experience. Meeting or exceeding Original Equipment Service (OES) design Standards, Autolite Copper spark plugs are a trusted choice backed by over a century of engineering expertise and the sale of over 11 billion plugs. Designed with a flat seat type and mid-projection standard electrode, these spark plugs are the industry standard for dependable performance.

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.
Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you get the most out of every gallon of gas.
Smooth Acceleration: Experience seamless and smooth acceleration with Autolite Copper Core spark plugs, enhancing your driving experience.
OES Design Compliance: These spark plugs are crafted to meet or exceed Original Equipment Service (OES) design requirements, ensuring high-quality performance.
Industry Standard: Autolite Copper Core spark plugs are recognized as the industry standard, backed by over 100 years of engineering expertise and the sale of over 11 billion plugs.

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$14.99

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 PROJECTED SQUARE PLATINUM ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with a unique cut-back PSPE ground electrode
RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
PSPE DESIGN: Projected 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: Modern vehicles using OE PSPE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
High Ignitability Design: Ensures a more complete fuel burn, resulting in quicker throttle response, smoother idle, and better cold starts.
Specialized OEM Tip Designs: Features patented DFE and PSPE tip designs for optimal performance in modern vehicles.
Industry-Leading Durability: Ruthenium center electrode provides exceptional durability, making it a reliable choice for long-term use.

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$8.99

The Double Platinum Power Spark Plug is engineered for drivers seeking enhanced performance and durability. Featuring a fine-wire platinum center electrode and a platinum pad ground electrode, this premium spark plug ensures greater wear resistance and sharper spark focus for reliable ignition. Its Heat-Active alloy optimizes electrode temperature under all engine loads, delivering consistent performance and improved ignitability. The V-trimmed ground electrode further enhances spark precision, while the flat seat design ensures a secure fit. Designed as a standard replacement, this spark plug is equipped with a resistor to minimize electrical interference. Built to maintain stable operating temperatures and withstand demanding conditions, it offers long-lasting performance and exceptional value for your vehicle.

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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$11.99

The Iridium TT Spark Plug combines the durability of an OE-style plug with the unmatched power and torque of high-performance engineering. Featuring a 0.4mm Iridium Center Electrode – the world’s smallest diameter – it maximizes firing potential, while the 0.7mm Needle Tip Ground Electrode promotes higher spark energy and reduces heat quenching. Built with DENSO’s patented Iridium-Rhodium alloy formula, this spark plug boasts the highest concentration of Iridium for superior durability, complemented by a 360-degree laser welding process for exceptional structural strength. With the ability to withstand temperatures exceeding 4000 degrees Fahrenheit, it delivers reliable performance under extreme conditions. Its advanced Twin-Tip Technology enhances fuel economy, allowing you to drive around the Earth over four times with lower emissions. Constructed with durable materials, including an Iridium Center Electrode Tip and a Flat Seat Type, this spark plug ensures robust and efficient operation, making it a smart choice for drivers seeking endurance and peak 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 and Torque of high performance.
Withstands temperatures greater than 4000 degree Fahrenheit
Iridium TT
Enhanced Fuel Economy: Drive around the Earth over 4 times with lower emissions and better fuel economy, thanks to the advanced Twin-Tip Technology.
Durable Materials: Constructed with an Iridium Center Electrode Tip and a Flat Seat Type, ensuring robust and reliable performance.

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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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$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, better acceleration, and improved fuel efficiency. The platinum firing tip resists gap erosion, extending service life, while the high alumina ceramic insulator enhances thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, and the nickel-plated shell offers exceptional corrosion resistance for long-lasting durability. Designed with a mid-projection standard center electrode and nickel ground electrode tip, these spark plugs deliver reliable performance under demanding conditions. Engineered in the USA with over a century of expertise and backed by the sale of over 11 billion plugs, Autolite Platinum spark plugs are a trusted choice for drivers seeking enhanced engine efficiency and durability.

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.
Engineered in the USA: Backed by over 100 years of engineering expertise and over 11 billion plugs sold.

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$10.99

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.
Engineered in the USA: Designed with over 100 years of Autolite engineering experience for superior quality and performance.
Proven Track Record: Part of a legacy with over 11 billion spark plugs sold, ensuring trusted performance and reliability.

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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 maintaining peak engine 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 flat seat type to ensure consistent ignition and reliable performance in demanding conditions.

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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 c

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

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$6.99

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

Product Features:

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 meet the demanding requirements of modern engines, ensuring consistent and reliable performance.

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$8.49

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.68 is a 14mm, 1.000 reach plug with a gasket seat. It fits a wide variety of late model applications, especially Hemi applications. E3.68 is widely stocked in automotive retail stores. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

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.
Wide Compatibility: E3.68 spark plugs are 14mm with a 1.000 reach and a gasket seat, fitting a wide variety of late model applications, especially Hemi engines.
Enhanced Heat Transfer: The three legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer and create more turbulence in the cylinder for better combustion.
Widely Available: E3.68 spark plugs are widely stocked in automotive retail stores, making them easily accessible for consumers.

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$12.29

The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering unmatched spark precision for maximum combustion and performance. Engineered with a patented 360-degree laser welding assembly process, it ensures durability and reliability even under extreme conditions. The U-groove and taper-cut ground electrode design optimizes flame propagation, while its ability to withstand temperatures exceeding 4000 Deg F guarantees long-lasting performance. Burnished nickel plating enhances resistance to high temperatures and corrosion, making it ideal for a wide range of applications, including classic and collector cars. This spark plug requires 5,000 fewer volts to fire compared to conventional plugs, ensuring superior performance, enhanced horsepower, and improved fuel efficiency. Whether you’re seeking faster starts, fewer misfires under heavy loads, or better overall engine efficiency, this Iridium Power Spark Plug is designed to deliver exceptional results.

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
Superior Performance: This spark plug requires 5,000 less volts to fire compared to conventional spark plugs, providing maximum performance even under extreme conditions.
Enhanced Horsepower and Efficiency: Experience more horsepower, faster and easier starts, fewer misfires under heavy loads, and better fuel efficiency with the DENSO Iridium Power spark plug.

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$5.99

The Platinum TT Spark Plug features a cutting-edge twin-tip design with a platinum center electrode, ensuring superior conductivity for efficient and consistent ignition. Its titanium-enhanced ground strap adds exceptional durability, making it a reliable choice for long-lasting performance. Engineered to optimize flame propagation, this spark plug promotes more complete combustion, improving engine efficiency and power output. The flat seat type ensures a secure fit, while the advanced materials enhance ignition reliability, making it ideal for automotive enthusiasts seeking enhanced performance and durability.

Product Features:

Platinum Twin-Tip Design: The Denso Platinum TT Spark Plug features a twin-tip design with a high-quality platinum center electrode, ensuring excellent conductivity and enhanced ignition performance.
Titanium-Enhanced Ground Strap: Equipped with a titanium-enhanced ground strap, this spark plug offers superior durability and longevity, making it a reliable choice for your vehicle’s ignition system.
Superior Conductivity: The platinum center electrode tip provides excellent conductivity, ensuring efficient and consistent ignition for improved engine performance.
Enhanced Ignition System: Designed to enhance your vehicle’s ignition system, the Denso Platinum TT Spark Plug delivers superior performance and reliability, making it an ideal choice for automotive enthusiasts.
Optimized Flame Propagation: Engineered to promote more complete combustion, this spark plug enhances engine efficiency and power output for a smoother and more powerful driving experience.

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$15.99

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

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$10.99

Autolite Iridium Ultra Laser Fine wire Spark Plugs are one of our brand’s most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world.

Product Features:

Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
Nickel-plated shell to resist corrosion.
High-alumina ceramic insulator for increased strength.
Laser welded 0.5mm Iridium finewire center electrode.
Proprietary platinum sidewire technology.
Superior Durability: Autolite Iridium Ultra Laser Fine wire Spark Plugs are designed to last longer, providing extended service life compared to standard spark plugs.
OE Fit and Function: Autolite Spark Plugs are the best alternative to original equipment (OE) spark plugs, offering perfect fit, form, and function for all foreign and domestic makes and models.
High-Quality Construction: As a leading supplier of spark plugs globally, Autolite ensures the highest quality ignition products for both the automotive aftermarket and original equipment manufacturers.
Value Pricing: Despite their advanced technology and superior performance, Autolite Iridium Ultra Laser Fine wire Spark Plugs are available at a value price, making them an economical choice for vehicle maintenance.

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$10.99

Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
Nickel-plated shell to resist corrosion.
High-alumina ceramic insulator for increased strength.
Laser welded 0.5mm Iridium finewire center electrode.
Proprietary platinum sidewire technology.

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$7.99

The U-Groove Spark Plug features a patented U-groove ground electrode design that enhances ignitability, allowing for leaner fuel mixtures and improved engine efficiency. Built with a nickel center electrode tip and a flat seat type, this spark plug ensures reliable performance and compatibility with a wide range of vehicles, including classic and collector cars. Precision machine-rolled threads minimize the risk of seizing or cross-threading in aluminum heads, making installation smooth and secure. Designed to last twice as long as conventional plugs, it delivers over 30,000 miles of dependable operation. Each plug is 100% pre-fired to guarantee consistent performance, making it an excellent choice for maintaining OE-level performance in your engine.

Product Features:

Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
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

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$15.99

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
Specialized OEM Tip Designs: Features DFE and PSPE tip designs for superior ignitability.
Industry-Leading Durability: Ruthenium center electrode ensures exceptional durability.

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$26.99

Engineered for unmatched performance, this Iridium Long-Life Spark Plug is crafted with DENSO’s patented Iridium Alloy and a fine wire center electrode, delivering exceptional ignition efficiency and durability. Its Platinum Needle Tip Ground Electrode ensures higher spark energy while minimizing heat quenching, making it ideal for high-performance ignition systems. Built to endure extreme temperatures exceeding 4,000 Deg F, this spark plug is designed to last up to three times longer than conventional plugs, maintaining sustained spark performance for over 100,000 miles. The 360-degree laser welding process guarantees a robust bond and structural integrity, ensuring reliable operation under demanding conditions. With a flat seat type and adherence to strict OE standards for performance, durability, and emissions, this spark plug offers a perfect fit and long-lasting value for your vehicle.

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
Platinum Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
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 (SIP)

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$6.99

NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.

Product Features:

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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$23.99

ACTUAL OE or EQUIVALENT HIGH IGNITABILITY DESIGN: PSPE tip and 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
PSPE DESIGN: Projected 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 PSPE iridium alloy plugs

In-Demand Ignition Coils and Boots for 2015 Subaru Legacies

Select from 5 premium Ignition Coils and Boots parts for your 2015 Subaru Legacy, with prices ranging from $7.99 to $123.99.

show more show less

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$7.99

Product Features:

OE design provides an exact fit for your application
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 spark plug boot
Design for direct compatibility
Multipack provides one time replace all COP for better deal

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$98.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$98.99

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
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

from

$96.99

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$123.99

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
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

Top-Rated Ignition and Tune-Up Products Brands For Your 2015 Subaru Legacy

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2015 Subaru Legacies. Below you’ll find some of our best rated Ignition and Tune-Up Products from NGK, DENSO, and Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 2015 Legacy start at just $3.99 and are rated as high as 4.8 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular NGK 2015 Subaru Legacy Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2015 Subaru Legacy, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. NGK ticks all of those boxes. We offer a wide selection of NGK Ignition and Tune-Up Products, specifically designed for the 2015 Subaru Legacy. With over 3 NGK 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 $14.99, with an average price of just $19.99. Plus, with over 102 customer reviews and an average rating of 4.8 stars, you can trust that our NGK 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.

from $26.99

(43)

Laser Iridium Spark Plug (SILZKAR7B11): High Ignitability & Durability

“Great plugs. Easy ordering online.”

from $14.99

(1)

Ruthenium HX Spark Plug (LFR6BHX): High Ignitability & Durability

“I took the risk on this new Ruthenium spark plug technology, and so far it seems to be paying off. I’m replacing the stock NGK Laser Iridiums that cam”

from $17.99

(58)

Iridium IX Spark Plug (LFR6AIX-11): Extreme Ignitability & Durability

“NGK Iridium Zap Nuts are all I run in all of my vehicles”

Popular DENSO 2015 Subaru Legacy Ignition and Tune-Up Products

DENSO auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2015 Subaru Legacy owner should feel confident when installing genuine DENSO parts in their vehicle. To ensure the best fit and performance for your 2015 Legacy, Advance Auto Parts carries a full inventory of 3 DENSO Ignition and Tune-Up Products. Plus you will be keeping your Subaru in peak condition while saving money because prices on these DENSO Ignition and Tune-Up Products range from $11.99 to $21.49, plus, with more than 109 customer reviews and an impressive 4.6 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

from $12.99

(16)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IKH20TT

“Vehicle”

from $21.49

(76)

Iridium Long-Life Spark Plug: Super Ignition, OE Performance, FK20HR11

“It work perfect”

from $11.99

(17)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IXEH22TT

“None”

FAQs for 2015 Subaru Legacy Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 2015 Subaru Legacies?

Out of 37 Ignition and Tune-Up Products that fit 2015 Subaru Legacies, the following parts are the top sellers:

Iridium IX Spark Plug (LKAR7BIX-11S): Extreme Ignitability & Durability (12102020) – $15.99
Double Platinum Spark Plug: Enhanced Durability & Performance (20650247) – $6.99
Iridium IX Spark Plug (LFR6AIX-11): Extreme Ignitability & Durability (20651124) – $17.99

What’s the price range for 2015 Subaru Legacy Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 2015 Subaru Legacy start at $2.99 and go up to $123.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 2015 Subaru Legacy?

The average price for Ignition and Tune-Up Products for the 2015 Subaru Legacy is $36.02. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Ignition and Tune-Up Products for other Subaru Legacy model years?

Yes, we currently carry Ignition and Tune-Up Products for 34 model years of Subaru Legacies between 1990 and 2025. Ignition and Tune-Up Products are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2014, and 2013.

What are the cheapest Ignition and Tune-Up Products for my 2015 Subaru Legacy?

The cheapest 2015 Subaru Legacy Ignition and Tune-Up Products we carry in stock are:

Copper Plus Spark Plug (REC10YC4): Dependable Performance & Durability (11406504) – $2.99
Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (11015588) – $3.99
Platinum Spark Plug: Enhanced Durability & Improved Performance (11015495) – $4.99
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition (11010043) – $5.99
Double Platinum Spark Plug: Enhanced Durability & Performance (20650247) – $6.99

What are the top-rated Ignition and Tune-Up Products that fit the 2015 Subaru Legacy?

Out of 1,610 reviews by customers, our 2015 Subaru Legacy Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 2015 Subaru Legacy and their top-rated products:

Ignition Switches
- 194 ZEVO: White LED Mini Bulb, Super Bright, 2 Pack (11920742) – $23.99
Spark Plugs
- 194 ZEVO: White LED Mini Bulb, Super Bright, 2 Pack (11920742) – $23.99

What types of Ignition and Tune-Up Products do you sell for my 2015 Subaru Legacy?

As of 11/2/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2015 Subaru Legacy:

Can I get help with 2015 Subaru Legacy Ignition and Tune-Up Product orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Subaru Ignition and Tune-Up Products and more.

What is your return policy for Subaru Legacy Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new Subaru Legacy Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2015 Subaru Legacy Ignition and Tune-Up Products

Sylvania – 194 ZEVO: White LED Mini Bulb, Super Bright, 2 Pack (Part No.194LED.BP2)

Champion – Iridium Spark Plug (RC10WMPB4): Maximum Performance & Longevity (Part No.9002)

NGK – Laser Iridium Spark Plug (SILZKAR7B11): High Ignitability & Durability (Part No.93482)

ACDelco – Double Platinum Spark Plug: Long-Lasting Performance & Durability (Part No.41-801)

Champion – Iridium Spark Plug (RC10WYPB4): Maximum Performance & Longevity (Part No.9001)

ACDelco – Double Platinum Spark Plug: Long-Lasting Performance & Durability (Part No.41-800)

NGK – Laser Platinum Spark Plug (PFR6G-11): Superior Ignitability & Longevity (Part No.5555)

Delphi – Ignition Coil: Meets or Exceeds Original Equipment Design, 1 Piece (Part No.GN10467)

Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBC1799)

Carquest Premium – Ignition Coil (Part No.EBA1159)

Delphi – Ignition Coil (Part No.GN10484)

Carquest Premium – Ignition Coil (Part No.EBA1129)

Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBE1036)

Carquest Premium – Ignition Coil (Part No.EBC1097)

Carquest Premium – Spark Plug Wire Set: 4 Wires, Increased performance, Designed for direct fit (Part No.35-4267)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7085)

Carquest Premium – Spark Plug Wire Set: 4 Wires, Increased performance, Designed for direct fit (Part No.35-4247)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBC3697)

Carquest Premium – Knock Sensor (Part No.SBC3975)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA4303)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.EKA1047)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA5405)

Carquest Premium – Knock Sensor (Part No.SBC3762)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBC3742)

Carquest Premium – Knock Sensor (Part No.SBC3761)

Carquest Premium – Knock Sensor (Part No.EKC1038)

Delphi – Knock Sensor (Part No.AS10092)

Carquest Premium – Knock Sensor (Part No.SBC3818)

Sylvania – 194 ZEVO: White LED Mini Bulb, Super Bright, 2 Pack (Part No.194LED.BP2)

Carquest Premium – Knock Sensor (Part No.EKC1038)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.EKA1047)

Dorman – Engine Knock Sensor And Harness Kit (Part No.962-701)

DENSO – Iridium Long-Life Spark Plug: Super Ignition, OE Performance, FK20HR11 (Part No.3426)

NGK – Laser Iridium Spark Plug (SILZKAR7B11): High Ignitability & Durability (Part No.93482)

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IKH20TT (Part No.4704)

Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.5325)

NGK – Ruthenium HX Spark Plug (LFR6BHX): High Ignitability & Durability (Part No.93420)

Champion – Double Platinum Power Spark Plug (REC10PYPB4): Enhanced Ignitability & Durability (Part No.7975)

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IXEH22TT (Part No.4712)

Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5325)

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP5325)

Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5683)

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP5325)

NGK – Iridium IX Spark Plug (LFR6AIX-11): Extreme Ignitability & Durability (Part No.6619)

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP5683)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.68)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IKH20 (Part No.5344)

DENSO – Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition (Part No.4506)

NGK – Iridium IX Spark Plug (LKAR7BIX-11S): Extreme Ignitability & Durability (Part No.93501)

Autolite Iridium – Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision (Part No.AI5683)

Autolite Iridium – Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision (Part No.AI5325)

DENSO – U-Groove Spark Plug: OE Performance, K20HR-U11 (Part No.3381)

NGK – Ruthenium HX Spark Plug (LKAR7AHX-S): High Ignitability & Durability (Part No.92274)

DENSO – Iridium Long-Life Spark Plug: Super Ignition, OE Performance, FXE22HR11 (Part No.3442)

NGK – G-Power Spark Plug (LKAR7BGP-S): Enhanced Durability & Efficiency (Part No.92649)

NGK – Laser Iridium Spark Plug (SILFR6C11): High Ignitability & Durability (Part No.7505)

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7085)

Carquest Premium – Ignition Coil (Part No.EBA1112)

Delphi – Ignition Coil (Part No.GN10687)

Carquest Premium – Ignition Coil (Part No.EBA1129)

Delphi – Ignition Coil (Part No.GN10666)