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Home >> Subaru >> 2017 >> Impreza Base, 4D Sedan, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Ignition System >> Ignition (H4DO) >> General Description >> Specification
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Ignition (H4DO): General Description: Specification

Item Specifications
Ignition coil Manufacturer and type Hitachi: EIC-3330
Ignition system Independent ignition coil
Spark plug Manufacturer and type NGK: DILKAR7B8
Thread size (diameter, pitch, length) mm 12, 1.25, 26.5
Spark plug gap mm (in) Standard 0.8 (0.031)
Electrode Center electrode: Iridium
Ground electrode: Platinum