Fitment: This ignition coil fits 2011 - 2021 Subaru STI and 2011 - 2014 Subaru WRX models. Features: Mishimoto's high - quality replacement ignition coils are a great upgrade. They enhance engine startup and idle, and bring back your Subaru's performance. These coils meet or exceed OEM performance standards. It's sold as a single unit. It refreshes the ignition system, providing a strong spark for both stock and modified vehicles. The durable rubber boot protects against moisture, oil, and debris. The high - quality phenolic resin outer shell ensures long - lasting use in high - temperature conditions. The pre - lubricated boots with dielectric grease offer excellent corrosion resistance. And it comes with a Mishimoto Lifetime Warranty.

Using this Mishimoto ignition coil is simple. First, make sure your vehicle's engine is off and cool. Locate the old ignition coil and carefully remove it. Then, install the new Mishimoto ignition coil in its place. Ensure it's properly seated. As for maintenance, there's not much you need to do. Just check the coil periodically for any signs of damage, like cracks in the outer shell or wear on the rubber boot. If you notice any issues, reach out to Mishimoto support. When handling the coil, be gentle to avoid damaging the delicate parts. And always follow standard safety procedures when working on your vehicle's engine.