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Subaru
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2025
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Impreza Base
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Repair and Diagnosis
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Engine Performance
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Engine Ignition System
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General Description
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Specification
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Spark Plug
Spark Plug
Type
DILKAR7Q8 (NGK)
Thread size (diameter, pitch, length)
mm
12.0, 1.25, 26.5
Spark plug gap
mm (in)
Standard
0.7 - 0.8 (0.028 - 0.031)
Electrode
Center electrode
Iridium
Ground electrode
Platinum