2004 Subaru WRX Performance Ignition Systems

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    • Bosch® OE Fine Wire Platinum Spark Plug
      (0 reviews)
      # 35776381
      Subaru WRX 2004, 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
      $4.40
    • E3® Spark Plug
      (2 reviews)
      # 12196591
      Subaru WRX 2004, Spark Plug by E3®. With Gasket Seat. Thread Size: 14 mm. Hex Size: 5/8". For a more efficient and complete burn, go with the super sturdy plugs by E3. The advanced DiamondFire plug features a diamond-shaped...
      Advanced DiamondFire electrode designProduces a faster burn
      $5.95
    • ZEX™ Hyperformance™ Spark Plug
      (1 reviews)
      # 13907652
      Subaru WRX 2004, 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® Spark Plug Wire Set
      (0 reviews)
      # 13588801
      Subaru WRX STI 2004, Spark Plug Wire Set by Karlyn STI®. The purpose of good wire insulation is to protect the cable from voltage leaks. The single most important factor for rating insulation performance is the type of material...
      Spiral CoreStainless Steel Magnetic Conductive Winding
      $29.80 - $31.55
    • Karlyn STI® Direct Ignition Coil
      (0 reviews)
      # 13588804
      Subaru WRX 2004, 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 - $34.81
    • Haltech® Platinum Sport 2000 ECU Kit
      (0 reviews)
      # 81420858
      Subaru WRX 2004, Platinum Sport 2000 ECU Kit by Haltech®.
      $499.00 - $2,177.00
    • HKS® F-Con V Pro Harness
      (0 reviews)
      # 70194017
      Subaru WRX With GDA Chassis 2004, F-Con V Pro Harness by HKS®. Type: FP5-7. Designed utilizing the latest technology, this product by HKS features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $474.01
    • HKS® Turbo Timer Harness
      (0 reviews)
      # 70194016
      Subaru WRX / WRX STI 2004, Turbo Timer Harness by HKS®. Type: FT-3. HKS Turbo Timer Harness makes it easy and safe to install the HKS Turbo Timer. Take out the key switch wiring connector and connect the HKS Turbo Timer Harness for...
      Keeps the engine running after the key is turned off for a few minutes allowing the turbocharger to coolConnector with a lock to prevent from detaching, where applicable
      $15.75
    • AVO® Turbo Timer
      (0 reviews)
      # 61628552
      Subaru WRX / WRX STI 2004, Turbo Timer by AVO®.
      $138.05
    • ACDelco® Professional™ Conventional Spark Plug
      (0 reviews)
      # 73489209
      Subaru WRX / WRX STI 2004, 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...
      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™ Platinum Spark Plug
      (0 reviews)
      # 73488069
      Subaru WRX / WRX STI 2.0L 2004, Professional™ Platinum Spark Plug by ACDelco®. 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.
      $9.16
    • ACDelco® Professional™ Rapidfire™ Spark Plug
      (0 reviews)
      # 73507422
      Subaru WRX / WRX STI 2.0L 2004, Professional™ Rapidfire™ Spark Plug by ACDelco®. 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
    • Bosch® OE Specialty Spark Plug
      (0 reviews)
      # 36021125
      Subaru WRX STI 2004, OE Specialty Spark Plug by Bosch®. Gap: Preset. Replace your worn out spark plugs with Bosch spark plugs and experience miles of worry-free driving. OE Specialty Spark Plugs ensure safe and reliable...
      Designed to meet or exceed OE specificationsMatch the fit, form, and function of the OE design
      $8.54
    • Denso® Spark Plug
      (0 reviews)
      # 21061323
      Subaru WRX 2004, 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 - $12.97
    • NGK® Spark Plug
      (0 reviews)
      # 22274711
      Subaru WRX 2004, Spark Plug by NGK®, 1 Piece. With a solid copper core, triple-gasket sealing, corrosion resistant plating, cold-rolled threads, and corrugated ribs, these products provide a powerful spark for reliable performance,...
      Designed for consistent performanceMeet OE quality, fit, and function
      $2.63 - $13.91
    • Champion® Copper Plus Spark Plug
      (0 reviews)
      # 22247809
      Subaru WRX STI 2004, Copper Plus Spark Plug by Champion®, 1 Piece. Thanks to the superior conductivity and performance from their copper core and the superior durability provided by nickel alloy center and ground electrodes, these...
      Designed for dependable performance and superior durabilityCopper core center electrode allows for an increase in conductivity and accurate control of heat range optimizing plug performance and longevity
      $2.49
    • Champion® Double Platinum Spark Plug
      (1 reviews)
      # 22235319
      Subaru WRX 2004, 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
      $7.28
    • Champion® Iridium Spark Plug
      (0 reviews)
      # 22273810
      Subaru WRX 2004, Iridium Spark Plug by Champion®, 1 Piece. Hex Size: 0.625". Thread Size: 0.551". Seat Type: Gasket. Center Electrode Material: Iridium Firing Tip. Ground Electrode Material: Platinum Pad Surface. Resistor Type:...
      Designed to provide dependable performance and long-lasting service lifeIridium center electrode and "laser-locked" platinum ground electrode ensure maximum life
      $8.08 - $8.10
    • Beck Arnley® Direct Ignition Coil
      (0 reviews)
      # 36253721
      Subaru WRX 2004, 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
      $62.25 - $66.11
    • Standard® Intermotor™ Ignition Coil
      (0 reviews)
      # 45264022
      Subaru WRX 2004, 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
      $71.31 - $73.58
    • Denso® Direct Ignition Coil Boot Kit, 4 Boots
      (0 reviews)
      # 85825102
      Subaru WRX 2004, 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
      $45.53 - $57.15
    • Genuine® Knock Sensor
      (0 reviews)
      # 8781801
      Subaru WRX / WRX STI 2004, Knock Sensor 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
      $136.30
    • Standard® Intermotor™ Ignition Knock Detonation Sensor
      (0 reviews)
      # 63153033
      Subaru WRX 2004, 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
      $80.52 - $81.24
    • Standard® Intermotor™ Ignition Starter Switch
      (0 reviews)
      # 63130093
      Subaru WRX / WRX STI 2004, Intermotor™ Ignition Starter Switch 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
      $37.54
    • Denso® Primary Ignition Wire
      (0 reviews)
      # 85542777
      Subaru WRX 2004, Primary Ignition Wire by Denso®. Coil On Plug Boot Set. Complete COP Boot Set - 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
      $45.53 - $57.15
    • Crane Cams® Spark Plug Wire Set (255-0081)
      (0 reviews)
      # mpn358959671
      Universal Spark Plug Wire Set by Crane Cams®. The most important function of a spark plug wire is to transfer the maximum amount of energy to the plugs, and ultra low resistance, 25 OHM, FireWire does this in spades. What's more,...
      $71.22
    • Holley® Ignition Coil (556-104)
      (0 reviews)
      # mpn620678762
      Ignition Coil by Holley®.
      $120.95
    • 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®.
      $50.00 - $81.00
    • Haltech® High Output CDI Coil
      (0 reviews)
      # 81416491
      Universal High Output CDI Coil by Haltech®.
      $27.14 - $64.90
    • Crane Cams® LX92 E-Core Ignition Coil (730-0892)
      (0 reviews)
      # mpn358959855
      Universal LX92 E-Core Ignition Coil by Crane Cams®, 1 Piece. E-Core. Square. Epoxy. Black. These Crane LX92 coils are recommended for maximum performance with Crane HI-6 systems. They can also be used with Mallory Hyfire, MSD 7,...
      $96.90
    • Crane Cams® PS91 Performance Ignition Coil (730-0091)
      (0 reviews)
      # mpn358959849
      Universal PS91 Performance Ignition Coil by Crane Cams®, 1 Piece. Includes Mounting Bracket. These PS91 performance ignition coils feature Crane's special E-core design, which loses less voltage, so more spark gets to your plugs....
      $89.08
    • Crane Cams® Engine Components
      (0 reviews)
      # 78761844
      Universal Engine Components by Crane Cams®.
      $11.69 - $139.35
    • Crane Cams® PS92 Performance Ignition Coil (730-0192)
      (0 reviews)
      # mpn358959852
      Universal PS92 Performance Ignition Coil by Crane Cams®, 1 Piece. These PS92 performance ignition coils feature Crane's special E-core design, which loses less voltage, so more spark gets to your plugs. The coils also have...
      $73.34
    • Holley® 4 Cylinder DIS Crank Trigger Kits (556-100)
      (0 reviews)
      # mpn620678766
      4 Cylinder DIS Crank Trigger Kits by Holley®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.
      $360.95
    • Holley® 6 Cylinder DIS Crank Trigger Kits (556-105)
      (0 reviews)
      # mpn620678761
      6 Cylinder DIS Crank Trigger Kits by Holley®. Holley’s Street Avenger series carburetors have been taken to the next level. Street Avenger carburetors are known to bolt on right out of the box, so what could be better than a...
      Features a tumble polished finish - can also be hand polishedOptimized street calibration that works-out-of-the-box
      $455.95
    • Holley® 8 Cylinder DIS Crank Trigger Kits (556-101)
      (0 reviews)
      # mpn620678765
      8 Cylinder DIS Crank Trigger Kits by Holley®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.
      $598.95
    • Haltech® Dual Power Select CDI Kit
      (0 reviews)
      # 81416474
      Universal Dual Power Select CDI Kit by Haltech®. Parametr: 115Mj/150Mj.
      $1,001.82 - $1,366.44
    • Haltech® ECU Device Emulator 8
      (0 reviews)
      # 81416475
      Universal ECU Device Emulator 8 by Haltech®. Channel: 8 Channels. Haltech Device Emulator 8, Quick Start Guide Optional Accessories: 1m Harness (HT040004), Plug and Pin Set (HT030007). The Haltech Device Emulator 8 was designed for...
      $115.00 - $231.00
    • Haltech® ECU Digital Reluctor Adaptor
      (0 reviews)
      # 81416476
      Universal ECU Digital Reluctor Adaptor by Haltech®. Size: 0.6m/2ft. Converts Sine wave VR sensor output to Digital signal.
      $53.00 - $231.00
    • Haltech® M&W Pro-14 Capacitor Ignition CDI System
      (0 reviews)
      # 81416503
      Universal M&W Pro-14 Capacitor Ignition CDI System by Haltech®.
      $873.20 - $1,007.72
    • Haltech® M&W Pro-16 Capacitor Ignition CDI System
      (0 reviews)
      # 81416504
      Universal M&W Pro-16 Capacitor Ignition CDI System by Haltech®.
      $1,052.56 - $1,321.60
    • Haltech® M&W Pro-18 Capacitor Ignition CDI System
      (0 reviews)
      # 81416505
      Universal M&W Pro-18 Capacitor Ignition CDI System by Haltech®.
      $1,231.92 - $1,288.56
    • Haltech® M&W Pro-Drag Capacitor Ignition CDI System
      (0 reviews)
      # 81416506
      Universal M&W Pro-Drag Capacitor Ignition CDI System by Haltech®.
      $862.58 - $1,445.50
    • Haltech® Platinum Series I/O Expander Box
      (0 reviews)
      # 81416511
      Universal Platinum Series I/O Expander Box by Haltech®.
      $107.00 - $463.00
    • Haltech® Platinum Sport 1000 ECU Kit
      (0 reviews)
      # 81416512
      Universal Platinum Sport 1000 ECU Kit by Haltech®.
      $359.90 - $1,736.96
    • Haltech® Platinum Sport 2000 ECU Kit
      (0 reviews)
      # 81416513
      Universal Platinum Sport 2000 ECU Kit by Haltech®. With 14 channels capable of controlling injection and ignition duties, the Platinum Sport 2000 can support most modern engines (including 3 rotor engines) with multi-coil or...
      $359.90 - $2,185.36
    • Haltech® Platinum Sprint 500 Kit
      (0 reviews)
      # 81416516
      Universal Platinum Sprint 500 Kit by Haltech®.
      $300.90 - $1,007.72
    • Haltech® Platinum Sprint RE Kit
      (0 reviews)
      # 81416517
      Universal Platinum Sprint RE Kit by Haltech®.
      $300.90 - $1,007.72
    • Haltech® Pro-10 All Triggers (HT020250)
      (0 reviews)
      # mpn470672891
      Universal Pro-10 All Triggers by Haltech®.
      $469.64
    • Haltech® Pro-12 CDI Hall with ECU Trigger (HT020251)
      (0 reviews)
      # mpn470672892
      Universal Pro-12 CDI Hall with ECU Trigger by Haltech®.
      $638.38
    • Crane Cams® Ignition Kit
      (0 reviews)
      # 78761863
      Universal Ignition Kit by Crane Cams®.
      $222.91 - $413.07
    • Crane Cams® XR3000 Points-To-Electronic Ignition Conversion Kit (3000-0231)
      (0 reviews)
      # mpn358959688
      Universal XR3000 Points-To-Electronic Ignition Conversion Kit by Crane Cams®. These XR3000 ignitions convert your points to an electronic ignition. They feature an all-new status LED light for easy diagnostics and 150 percent...
      $132.94
    • 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...
      Manufactured from premium materialsDesigned to strict quality standards
      $142.30
    • Crane Cams® Timing Retard Controller (6000-6425)
      (0 reviews)
      # mpn358959771
      Universal Timing Retard Controller by Crane Cams®, 1 Piece. These timing retard controls from Crane are an ideal way to add zero to 20 degrees of timing retard in three modes - continuous, demand, and boost proportional - to HI-6,...
      $132.33
    • 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
      $4.91 - $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
      $1.98 - $4.27
    • 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
      $4.81
    • 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
      $3.51 - $3.92
    • 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
      $2.39




    Guides & Articles

    • Performance Parts
      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 Parts
      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.
    • Performance Parts
      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

    2004 Subaru WRX Performance Ignition Systems Reviews

    Average rating:  5  5 - 8 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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