Toyota 17801-21020 Air Cleaner Filter Element Sub-Assembly

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The air filter is located inside a housing at the center of the engine compartment. To remove the air filter, release the spring clips that keep the two halves of the air cleaner housing together, then lift the cover up and remove the air filter element. The top of the air filter housing is retained by clips that can be removed without tools. On 2009 and earlier models, lift the air filter assembly out of the housing, then remove the air filter element. Removing the air filter on a 2010 and later model may require disconnecting the wiring from the MAF sensor, then disconnecting the outlet hose to completely remove the air filter upper cover. Inspect the outer surface of the filter element. If it is dirty, replace it. If it is only moderately dusty, it can be reused by blowing it clean from the back to the front surface with compressed air. Because it is a pleated paper type filter, it cannot be washed or oiled. If it cannot be cleaned satisfactorily with compressed air, discard and replace it. While the cover is off, be careful not to drop anything down into the housing. Wipe out the inside of the air cleaner housing. Place the new filter into its frame, making sure it seats properly. Installation of the cover is the reverse of removal.