NGK Iridium Racing Spark Plugs -Competition Spec - Heat Range 9 - EJ20 Model_Impreza 2014+ when necessary

when necessary

ensuring the highest quality possible

The plenum volume and runner length combination has been optimized for brutal low and mid range torque while increasing top end power aggressively

along with the small idler bearing

NGK Iridium Racing Spark Plugs -Competition Spec - Heat Range 9 - EJ20 Model_Impreza 2014+ when necessary4 x NGK Iridium Racing Spark Plugs for heavily modified Impreza's used on track. NGK are the World leaders in spark plug technology. With over 80 years of automotive expertise, they are driven by extreme dedication to performance and quality. From OEM to aftermarket, they push the boundaries of innovation to give you the very best for your Subaru. At RCM it's the only spark plug product we'll use on either standard or modified Subaru's maximising the