These NGK Laser Iridium spark plugs are a top - notch choice for your Subaru. They're designed to fit 2015 - 2021 Subaru WRX and 2014 - 2018 Subaru Forester models. Sold in a set of 4, these spark plugs come with multiple great features. The corrugated ribs stop flashover, while the pure alumina silicate ceramic insulator offers excellent strength and heat transfer. The copper core helps remove heat effectively, and triple seals prevent leakage. They can last up to 100k miles and come with a 60 - day manufacturer warranty. You can save big compared to buying from competitors or local auto parts stores. The spark plug has a 12mm thread diameter, 1.25mm thread pitch, flat seat type, 26.5mm reach, 14mm wrench diameter, solid terminal type, and a 0.6mm gap. The center electrode has an iridium tip and a copper core, and the ground electrode is made of nickel with a taper - cut shape. It also has a 5k Ohm resistor and a manufacturer heat range of 8. Torque specs vary for cast iron and aluminum. Always check the gap before installation. NGK Laser Iridium spark plugs offer the best mix of performance and long - lasting use. Import Image Racing is an authorized NGK dealer, ensuring you get authentic products covered by the manufacturer warranty.
Using these NGK Laser Iridium spark plugs is easy. First, make sure your engine is cool. Remove the old spark plugs one by one using a proper spark plug wrench. Before installing the new ones, always check the gap as recommended. When tightening, follow the torque specs - 10.8 - 18 lb. ft. for cast iron engines and 10.8 - 14.5 lb. ft. for aluminum engines. As for maintenance, these spark plugs are built to last up to 100k miles. But it's a good idea to check them regularly for any signs of wear or damage. If you notice any issues like rough idling or poor engine performance, it might be time to take a closer look at the spark plugs. Also, remember that Import Image Racing is an authorized dealer, so if you have any problems, you're covered by the 60 - day manufacturer warranty.
