Subaru Impreza Manuals 2010 Impreza Owner's Manual | Page 339

Maintenance and service & Recommended spark plugs Spark plugs Non-turbo models: FR5AP-11 (NGK) Turbo models: SILFR6A (NGK) 6. If the air cleaner case has been removed, insert the three projections on the air cleaner case into the slits on the air cleaner case cover. 7. Install in the reverse order of removal. 11-19 It may be difficult to replace the spark plugs. It is recommended that you have the spark plugs replaced by your SUBARU dealer. The spark plugs should be replaced according to the maintenance schedule in the “Warranty and Maintenance Booklet”. CAUTION . When disconnecting the spark plug cables, always grasp the spark plug cap, not the cables. . Make sure the cables are replaced in the correct order.