2005 Subaru Impreza Owner's Manual - Page 405
2005 Subaru Impreza Manual
Page 405 highlights
Maintenance and service Air cleaner element The air cleaner element functions as a filter screen. When the element is perforated or removed, engine wear will be excessive and engine life shortened. The air cleaner element is a viscous type. It is unnecessary to clean or wash the element. Non-turbo models Do not operate the engine with the air cleaner element removed. The air cleaner element not only filters intake air but also stops flames if the engine backfires. If the air cleaner element is not installed when the engine backfires, you could be burned. UGB092BA 1. Unsnap the two clamps holding the air cleaner case cover. Replacing the air cleaner element Replace the air cleaner element according to the maintenance schedule in the "Warranty and Maintenance Booklet". Under extremely dusty conditions, replace it more frequently. It is recommended that you always use genuine SUBARU parts. 11-24
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