These NGK Iridium Spark Plugs (BKR8EIX) are a perfect fit for Subaru WRX models from 2002 to 2005. Sold in a set of 4, they offer amazing features. The fine iridium tip guarantees high durability and a steady spark. With trivalent metal plating, they have great anti - corrosion and anti - seizing properties. You'll enjoy excellent acceleration, high fuel efficiency, and long - lasting performance up to 50k miles. They come with a 60 - day manufacturer warranty. The spark plug has a 14mm thread diameter, 1.25mm thread pitch, a flat seat type, and a 19mm reach. Its wrench diameter is 5/8' (16mm), with a solid terminal type and a 0.8mm gap. The center electrode is made of iridium tip and copper core, while the ground electrode is nickel with a taper - cut shape. It has a 5k Ohm resistor and a manufacturer heat range of 8. Torque specs are 18 - 25.3 lb. ft for cast iron and 18 - 21.6 lb. ft for aluminum. Compared to platinum, NGK Iridium offers more durability, better anti - oxidation, and improved ignition. One - step colder plugs are good for heavily modified cars. These plugs will make your Turbo Subaru run smoother and more efficiently. Note that iridium plugs can use larger gap settings with less voltage, but regapping them can damage the iridium tip. Import Image Racing is an authorized NGK dealer, ensuring authentic products and manufacturer warranty.
Using these NGK Iridium Spark Plugs is easy. First, make sure your car is turned off and cooled down. Remove the old spark plugs carefully. Then, install the new ones using the appropriate wrench size (5/8' or 16mm). Tighten them according to the torque specs: 18 - 25.3 lb. ft for cast - iron engines and 18 - 21.6 lb. ft for aluminum engines. It's important to note that these iridium plugs can use larger gap settings with less voltage. But don't try to regap them unless you're really sure what you're doing, as a slide - type plug gapper can damage the fragile iridium tip. For maintenance, keep an eye on your car's performance. If you notice a drop in acceleration or fuel efficiency, it might be time to check the spark plugs. These plugs are designed to last up to 50k miles, but you can always rely on the 60 - day manufacturer warranty if you face any issues.
