Autolite® AP3923 - Platinum Spark Plug

2005 Subaru WRX
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Subaru WRX 2.0L 2005, Platinum Spark Plug (AP3923) by Autolite®, 1 Piece, Gap: 0.03. Manufactured with a center wire platinum firing tip, these platinum spark plugs reduce gap erosion for fewer misfires, while ensuring easier starts, quicker acceleration, and improved fuel economy compared to standard plugs.

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Fitment Notes: You need 4 spark plugs for your vehicle. Please specify quantity in the cart.

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Features:

  • Designed for excellent performance and superior durability
  • Ensure high temperature, pressure, and corrosion resistance for long-lasting service life
  • Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy
  • High nickel alloy side electrode maintains precise gap
  • Full platinum tip assures virtually no gap erosion
  • Covered by a 4-year limited warranty

The spark plug is the last step in the ignition circuit. It takes a voltage surge from the coil and creates a high voltage spark that ignites the compressed air fuel mixture within each cylinder. If everything operates properly, the engine runs efficiently providing maximum fuel economy and the lowest exhaust emissions. Spark plugs are available in different materials, heat ranges, reach, thread diameter, and seat type, with features to suit engine requirements. Always use the spark plug that is specified for your engine. If the wrong plug is used, it could come into contact with a piston or valve within the engine and break causing serious damage to the engine.

With these spark plugs by Autolite, you are guaranteed that they will not only fit perfectly but meet all the requirements of your engine as Autolite uses what is called a "rating engine" to match up OE plugs. Autolite engineers carefully measure OE spark plugs and then match the physical qualities with several Autolite plugs. Then they run the OE plug in their rating engine, which provides data that indicates the heat range of the OE plug. They use this data to precisely match every Autolite spark plug to both the heat range and dimensions of the OE product. Engineered, designed, and manufactured with professional care, these spark plugs meet all OE standards and specifications.

With their center wire platinum firing tip, these spark plugs ensure high temperature and corrosion resistance while providing reliable long-lasting service life as well as reduced gap erosion and fewer misfires. They are built with a necked-down center electrode that fires quicker and cleaner with less voltage for easier starts, quicker acceleration, and improved fuel economy compared to original plugs. These spark plugs by Autolite also feature a high nickel alloy side electrode that maintains precise gap for excellent performance throughout their service life.

3.18
Brand: Autolite       Part Number: AP3923       UPC: 009100258137 This part is compatible with 1125 vehicle(s)
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An innovation leader since 1936, Autolite creates the highest quality ignition products for a wide variety of engines. Established in 1911, the company started manufacturing buggy lamps and became a thriving automotive parts manufacturer by the 1930's. Still the first Autolite spark plug saw the world in 1936 and had instant success on the market. Today, the company is known as the manufacturer of America's best-selling spark plug and offers a number of spark plug series such as Autolite XP Xtreme Performance, Autolite Platinum, Autolite Revolution HT, Autolite Double Platinum, etc.

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