FixVault

Section 35 (Engine Ignition System (WRX)): General Description: Specification

WARNING: This page is about a different car, the 2013 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
Item Specifications
Ignition coil Type FK0368
Ignition system Independent ignition coil
Manufacturer Diamond Electric
Spark plug Manufacturer and type NGK: SILFR6A
Thread size (diameter, pitch, length) mm 14, 1.25, 26.5
Spark plug gap mm (in) Standard 0.7 - 0.8 (0.028 - 0.031)
Electrode Iridium