Subaru 2008 Impreza Owner's Manual page 309

! Turbo models
1. Use a screwdriver to undo the clips on
the air intake duct, then remove the air
intake duct.
2. Unplug the connector that is attached
to the top of the air cleaner case.
3. Unsnap the two clips holding the air
cleaner case cover.
4. Open the air cleaner case cover and
remove the air cleaner element.
5. Clean the inside of the air cleaner
Maintenance and service
cover and case with a damp cloth and
install a new air cleaner element.
6. To install the air cleaner case cover,
insert the three projections on the air
cleaner case cover into the slits on the
air cleaner case and then snap the two
clips on the air cleaner case cover.
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