Subaru 2006 Impreza WRX - Manual (Page 296)

Maintenance and service
11-17
5. To install the air cleaner case cover, in-
sert the three projections on the air clean-
er case into the slits on the air cleaner
case cover and then snap the two clamps
on the air cleaner case cover.
Spark plugs
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 ac-
cording to the maintenance schedule in
the “Warranty and Maintenance Booklet”.
Recommended spark plugs
Non-turbo models:
FR5AP-11 (NGK)
Turbo models:
ILFR6B (NGK)
B00364
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.
B00027