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The AEM 21-821DS is a cold air intake kit for the 2009–2020 Nissan 370Z. It replaces the stock airbox with a black plastic intake tube and a reusable DryFlow dry filter, so you clean and reuse the filter instead of replacing it. AEM's dry filter avoids the oiled-filter maintenance that can foul mass airflow sensors, which is the main practical edge over many rival intakes. It suits 370Z owners after a modest power and sound gain; gains are real but small, and a tune is needed to get the most from it.
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Lowest price we've seen: $374.42 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
Owners of the 370Z report a clearer intake sound and slightly sharper throttle, with the dry filter seen as easier to live with than oiled rivals. Most say the power gain is small and worth it mainly for sound and simplicity.
The AEM Induction Cold Air Intake System, part number AEM-21-821DS, is an air induction kit made for the Nissan Z, model years 2009 to 2020. It is supplied as a complete kit.
The system uses a Dryflow filter, which is a reusable dry filter. The intake is made of plastic in a black finish.
