The Nissan Quest Air Filter is engineered to filter out dirt and foreign particles from the air before it gets into the engine. Located in the intake system, the Air Filter uses a pleated fibrous medium to trap contaminant particles down to 5 microns while still allowing the high airflow an engine requires. For every gallon of gasoline burned, an engine needs about 10,000 gallons of air. Many fuel-injected vehicles, notably the Nissan Quest, use a flat panel Air Filter fitted inside an air box that connects to the throttle body through a sealed duct, so all incoming air passes through the filtering element. Airflow may become restricted and hence reduce power and fuel economy due to surface loading of dust, leaves, sand, and other particulate matter. The Nissan Quest Air Filter is designed to be replaced at regular intervals for added engine protection. Opening the air box comes first, followed by the removal of the old Air Filter. Loose debris is cleared away, and a new one is placed and properly seated. This restores the Nissan Quest engine to breathe freely again.
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