LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2004 >> Forester XS, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition (H4SO) >> Spark Plug >> Removal >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Spark Plug: Removal: Notes

CAUTION: All spark plugs installed on an engine, must be of the same heat range. 
SPARK PLUG HEAT RANGE

Spark plug
CHAMPION: RC10YC4
NGK: BKR5E-11 (Alternate)
NGK: BKR6E-11 (Alternate)