NGK Iridium Racing Spark Plugs for Heavily Modified Impreza's - Heat Range 8 - EJ20 Exhausts_Exhaust Centre Sections Please see the "Download Fitting

Please see the "Download Fitting Instructions" link below for some Tech Tips to help avoid installation issues

(x1) IAG's Stage 3 Closed Deck Converted Case Halves (Using brand new EJ25 Case / Stock Bore 99

Enlarged ID chamfers on bearing edges where required to accomodate large fillet radius on performance crankshafts

the result is a true ½ inch finished outer insert thickness and true ¾ inch finished inner insert thickness

NGK Iridium Racing Spark Plugs for Heavily Modified Impreza's - Heat Range 8 - EJ20 Exhausts_Exhaust Centre Sections Please see the "Download FittingNGK 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 engine response and power potential of your engine. This set of spark plugs is