2003 Subaru WRX Performance Ignition Systems

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    • E3® Premium Automotive Spark Plug
      (0 reviews)
      # 87740540
      Subaru WRX 2003, Premium Automotive Spark Plug by E3®. With Gasket Seat. Spark Plug Reach: 0.750". Hex Size: 5/8". Thread Size: 14mm. 1 Piece. QOHC. If you need a replacement for your damaged spark plug, this is the part you should...
      Advanced DiamondFire electrode designProduces a faster burn
      $5.95
    • ZEX® Hyperformance™ Spark Plug
      (1 reviews)
      # 13907654
      Subaru WRX 2003, Hyperformance™ Spark Plug by ZEX®. 14mm Thread; 3/4 in. Reach; Gasket Seat Design; For Engines Using Nitrous/Turbos/Blowers.
      Igniter Core. Pure Copper And High-Quality NickelClean Fire. Spark Energy Cleans Center Electrode
      $5.67
    • Karlyn STI® Direct Ignition Coil
      (0 reviews)
      # 13584520
      Subaru WRX 2003, Direct Ignition Coil by Karlyn STI®. The ignition coil is one of the most important part in the ignition system. Ignition Coil aimed to provide the needed high voltage and ignition energy for generating the high...
      Place directly on the spark plugHigh temperature resistant
      $31.36
    • PerTronix® Second Strike Silver Ignition System
      (0 reviews)
      # 80869984
      Subaru WRX 2003, Second Strike Silver Ignition System by PerTronix®. Capacitive/Inductive discharge Ignition Box Output, Digital Circuitry, None Timing Retard, Rev Limiter. Without Coil, Data Acquisition. Voltage: 18 V / 200-800 V...
      $290.96
    • PerTronix® Digital Rev Limiter
      (0 reviews)
      # 80869985
      Subaru WRX 2003, Digital Rev Limiter by PerTronix®. Adjustable, Knob Adjustment Style, No Compatible with Multiple Coil Ignitions. Without Ignition Box Required. Polarity: 12 Volt negative ground. Flame-Thrower digital rev limiters...
      $133.23
    • ACDelco® Professional™ Conventional Spark Plug
      (0 reviews)
      # 73489209
      Subaru WRX 2003, Professional™ Conventional Spark Plug by ACDelco®. Gap 0.030. With coverage for most older vehicles on the road today and robust long-life design, ACDelco Professional Conventional Spark Plugs are an economical...
      Has a copper-core center electrode that helps provide improved heat transfer to the tip, giving you the reliability you’re looking for while improving its resistance to low-speed carbon fouling.Precisely engineered and manufactured to provide everyday reliability and efficient performance.
      $2.74
    • ACDelco® Professional™ Double Platinum Spark Plug
      (0 reviews)
      # 73518190
      Subaru WRX 2003, Professional™ Double Platinum Spark Plug by ACDelco®. Gap 0.030, Gap 0.044. An ideal plug for vehicles requiring platinum performance or older vehicles calling for conventional plugs, ACDelco’s Professional...
      Dual platinum tip for improved resistance to spark erosion and corrosive combustion chamber environment.A platinum center electrode and a platinum pad lower the ignition voltage demand.
      $8.71
    • ACDelco® Professional™ Rapidfire™ Spark Plug
      (0 reviews)
      # 73518191
      Subaru WRX 2003, Professional™ Rapidfire™ Spark Plug by ACDelco®. Gap 0.030, Gap 0.044. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit...
      Ribless insulator that improves the plug-to-boot seal.Tapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage.
      $6.03
    • Denso® Spark Plug
      (0 reviews)
      # 21061298
      Subaru WRX 2003, Spark Plug by Denso®, 1 Piece. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste your time...
      OE quality parts from top original equipment and aftermarket manufacturerFast shipping; 1-2 day delivery time regardless of where you’re located
      $2.26 - $13.05
    • NGK® G-Power™ Spark Plug
      (0 reviews)
      # 22214420
      Subaru WRX 2003, G-Power Spark Plug by NGK®. 5K Ohm, Copper Core, Electrod Material: Platinum. Hex Size: 5/8". Overal Height: ISO. Heat Range: 6. Seat Type: Gasket. Reach: 19mm. Thread Size: 14. Shape: Trapezoid. Electrod Type:...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions compared to a traditional plug
      $4.11
    • NGK® Iridium IX™ Spark Plug
      (0 reviews)
      # 22214821
      Subaru WRX 2003, Iridium IX Spark Plug by NGK®. 5K Ohm, Copper Core, Electrod Material: Iridium. Hex Size: 5/8". Overal Height: ISO. Heat Range: 6. Seat Type: Gasket. Reach: 19mm. Thread Size: 14. Shape: Taper Cut. Electrod Type:...
      Designed for outstanding acceleration, high fuel efficiency, and durabilityEnsure a consistently stable spark
      $8.83
    • NGK® Laser Platinum™ Spark Plug
      (0 reviews)
      # 22274701
      Subaru WRX 2003, Laser Platinum Spark Plug OEM/OES by NGK®. 5K Ohm, Copper Core, Electrod Material: Platinum. Hex Size: 5/8". Overal Height: ISO. Heat Range: 6. Seat Type: Gasket. Reach: 19mm. Thread Size: 14. Shape: Standard....
      Provide faster starts and quicker acceleration than a traditional plugEnsure better fuel economy and lower emissions compared to an original plug
      $14.07
    • Champion® Double Platinum Spark Plug
      (0 reviews)
      # 22235319
      Subaru WRX 2003, Double Platinum Spark Plug by Champion®, 1 Piece. With platinum fine wire welded onto the nickel alloy center electrode and a platinum pad welded to the ground electrode, these products provide long-lasting service...
      Designed to provide dependable and long-lasting performancePlatinum center and ground electrodes ensure longer life
      $7.46
    • Champion® Iridium Spark Plug
      (0 reviews)
      # 22235320
      Subaru WRX 2003, Iridium Spark Plug by Champion®, 1 Piece. Built using more than 30 years' experience in manufacturing iridium spark plugs, these Champion products offer maximum performance. With a fine-wire iridium center...
      Designed to provide dependable performance and long-lasting service lifeIridium center electrode and "laser-locked" platinum ground electrode ensure maximum life
      $8.18
    • Denso® Primary Ignition Wire
      (0 reviews)
      # 85535121
      Subaru WRX 2003, Primary Ignition Wire by Denso®. Complete Coil On Plug Boot Set – quantity 4. The 7 and 8mm ignition wires are SAE J2031 Class E rated, the highest quality wire used in the industry. These wires can withstand...
      Carbon impregnated fiberglass core for superior support conductivityFiberglass braid for maximum strength
      $58.24
    • Beck Arnley® Direct Ignition Coil
      (0 reviews)
      # 36226007
      Subaru WRX 2003, Direct Ignition Coil by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the...
      OE quality products from top original equipmentTop quality materials
      $63.43
    • Spectra Premium® Ignition Coil
      (0 reviews)
      # 81108996
      Subaru WRX 2003, Ignition Coil by Spectra Premium®. Spectra Premium ignition coils are designed and produced under a strict TS16949 quality control process.
      All ignition coils are durability tested at 100 cycles of thermal shock (-50 to 300° F), to ensure reliability from extreme vibration24 hours salt spray test ensures sensors provide high corrosion resistance
      $30.61 - $80.09
    • Standard® Intermotor™ Ignition Coil
      (0 reviews)
      # 45115633
      Subaru WRX 2003, Intermotor™ Ignition Coil by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the highest...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $60.59
    • Denso® Direct Ignition Coil Boot Kit, 4 Boots
      (0 reviews)
      # 85802623
      Subaru WRX 2003, Direct Ignition Coil Boot Kit by Denso®. 4 Boots. O.E. Replacement Part. A leader in direct ignition technology, Denso developed the auto industry's first compact stick-type ignition coil. The space-saving design,...
      Improved coil efficiency reduces the need to generate high voltageDriving circuit is integrated into top of coil
      $58.24
    • Standard® Direct Ignition Coil Boot
      (0 reviews)
      # 99033064
      Subaru WRX 2003, Direct Ignition Coil Boot by Standard®. Single Pack. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and the...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $10.62
    • Standard® Intermotor™ Direct Ignition Coil Boot
      (0 reviews)
      # 97164480
      Subaru WRX 2003, Intermotor™ Direct Ignition Coil Boot by Standard®. Single Pack. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $10.62
    • Standard® Intermotor™ Ignition Knock Detonation Sensor
      (0 reviews)
      # 63130094
      Subaru WRX 2003, Intermotor™ Ignition Knock Detonation Sensor by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $81.35
    • Bosch® OE Fine Wire Platinum Spark Plug
      (0 reviews)
      # 35769400
      Subaru WRX 2003, OE Fine Wire Platinum Spark Plug by Bosch®. Pack of 1. Gap: Preset. These spark plugs are engineered to ensure reliable ignition and uncompromising performance. The OE fine wire platinum design delivers optimal fit...
      OE specific design360-degree continuous laser welded platinum tip for durability and long life
      $4.55
    • BTP® 50,000V External Ignition Coil
      (0 reviews)
      # 66967891
      Universal 50,000V External Ignition Coil by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is...
      Designed to make your ignition system operate at its peakMade from superior materials
      $62.01
    • Haltech® ECU Ignition Coil
      (0 reviews)
      # 81416477
      Universal ECU Ignition Coil by Haltech®. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $50.00 - $81.00
    • Haltech® High Output CDI Coil
      (0 reviews)
      # 81416491
      Universal High Output CDI Coil by Haltech®. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $24.92 - $55.00
    • BTP® Wire Looms
      (0 reviews)
      # 66968024
      Universal Wire Looms by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made from durable...
      Designed to make your ignition system operate at its peakMade from superior materials
      $7.00 - $56.61
    • BTP® Wire Separators
      (0 reviews)
      # 66968035
      Universal Wire Separators by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made from...
      Designed to make your ignition system operate at its peakMade from superior materials
      $2.88 - $6.13
    • BTP® Chrome Steel Coil Cover Kit (6060)
      (0 reviews)
      # mpn753352390
      Universal Chrome Steel Coil Cover Kit by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is...
      Designed to make your ignition system operate at its peakMade from superior materials
      $7.00
    • BTP® Coil Bracket
      (0 reviews)
      # 66967826
      Universal Coil Bracket by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made from durable...
      Designed to make your ignition system operate at its peakMade from superior materials
      $4.88 - $5.75
    • BTP® HEI Advance Curve Kit (6058)
      (0 reviews)
      # mpn753352392
      Universal HEI Advance Curve Kit by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made from...
      Designed to make your ignition system operate at its peakMade from superior materials
      $3.50
    • BTP® HEI Distributor Module
      (0 reviews)
      # 66967923
      Universal HEI Distributor Module by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made...
      Designed to make your ignition system operate at its peakMade from superior materials
      $15.70 - $17.30
    • APEXi® Auto Timer (405-A021)
      (0 reviews)
      # mpn470412430
      Universal Auto Timer by APEXi®. The Apex Auto Timer allows the vehicle to idle for a preset amount of time after the ignition key has been removed. This prevents hot oil in the engine from bcokingb (solidifying) in the lines or...
      $138.55
    • ARC® Replacement Ignition and Fuel Switch (2130)
      (0 reviews)
      # mpn358953845
      Universal Replacement Ignition and Fuel Switch by ARC®. 1 Piece. SPST (On) (On) & SPST (Off) (On) Red Lighted 20 Amp. Auto-Rod carries a wide range of state-of-the-art controls and car wiring solutions for the street rod and race...
      $49.60
    • Painless Performance® Ignition Switch with Keys (80153)
      (0 reviews)
      # mpn359118034
      Universal Ignition Switch with Keys by Painless Performance®, 1 Piece. Includes Key Lock Cylinder. Switch made from Aluminum. Dash mounted ignition switch with two keys.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $25.99
    • Haltech® Elite 2500 Fully Terminated Harness Kit
      (0 reviews)
      # 81416481
      Elite 2500 Fully Terminated Harness Kit by Haltech®. The future of Engine Management is here! The new Haltech Elite Series ECUs take the art of engine management to a brand new level. With a brand new, waterproof case,...
      $46.00 - $2,232.00
    • Powerbuilt® Distributor Clamp Wrench Set (640580)
      (0 reviews)
      # mpn2340103
      Universal Distributor Clamp Wrench Set by Powerbuilt®. Fits 1/2” & 9/16” distributor nuts. Chrome plated carbon steel construction. Designed utilizing the latest technology, this product by Titan features premium quality and...
      Made with precision and quality in mindDesigned to meet your specific needs
      $9.74
    • Delphi® Ignition Coil
      (0 reviews)
      # 52389913
      Subaru WRX 2003, Ignition Coil by Delphi®. 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,...
      Designed and endurance tested to resist the common stresses that cause failureEfficient coil design that ensures the power in the coil has a streamlined path to the spark plug
      $65.79
    • Genuine® Direct Ignition Coil
      (0 reviews)
      # 8910205
      Subaru WRX 2003, Direct Ignition Coil by Genuine®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste your...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $137.77
    • Beck Arnley® Coil Boot
      (0 reviews)
      # 66789983
      Subaru WRX 2003, Coil Boot by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s,...
      OE quality products from top original equipmentTop quality materials
      $12.59
    • Prenco® Direct Ignition Coil Boot
      (0 reviews)
      # 7933400
      Subaru WRX 2003, Direct Ignition Coil Boot by Prenco®. Note: Spring and Boot. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair,...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $18.03
    • NGK® Coil on Plug Boot
      (0 reviews)
      # 100097146
      Subaru WRX 2003, Direct Ignition Coil Boot by NGK®. 4 Per Vehicle. 4 COP Boots Required. No Wires Required. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $9.74


    Guides & Articles

    • Performance Ignition Systems
      The Benefits of a Performance Ignition Distributor
      Since their inception at the start of the 20th century, motor vehicles with gasoline burning engines have needed a precise way to deliver an electrical spark to each of the engine's cylinders. (Note that diesel engines do not rely on an electrical spark to ignite the fuel-air mixture.) For much of the past 100 years, the spark has been delivered by the ignition distributor. The distributor is always mechanically linked or timed to the engine's rotation so that the spark is sent at the exact moment it is needed.
    • Performance Engine Parts
      Performing a Basic Engine Tune Up
      This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that you are tuning up your engine because it has reached the mileage or time point to do so, and that you are NOT performing a tune up to cure an engine performance defect. We make this distinction because not all running/performance issues will be solved via a simple tune up.
    • Ignition Parts
      Understanding The Different Types Of Spark Plugs
      Since the dawn of the automobile, spark plugs have been an integral part of gasoline engines because they conduct the electrical energy from a vehicle’s ignition system needed to finalize the combustion process. After the gas/air mixture has been fully compressed inside the cylinder head, spark plugs serve a miniature bolt of lightning to create an explosion which pushes a piston downward.

    Popular Products

    2003 Subaru WRX Performance Ignition Systems Reviews

    Average rating:  5  5 - 5 reviews
    4.8 of 5
    2 Terminal Heavy Duty Ignition Switches
    My previous switch lasted a year or so but quit working so I replaced it with Longacre Weatherproof Switch. Took a nice off-road ride today, about 120 minutes. Connections is good and wires are not hot. I recommend it to everybody.
    RPosted by Rev.Michael (Salem, SD) /
    2011 Jeep Wrangler
    Was this review helpful for you? Yes
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