GReddy Airnx Small Blue Replacement Filter Element Our new multi-layer synthetic, deep pleated, dry filter element provides improved filtration, with long service intervals. It also provides high flow, but without sensor contamination. Orginal replacement elements for the Airinx AY-Type filters are also avaible. Air filters are essential when it comes to your vehicles performance and protection. Shop from our list of air filters from brands like K&N, AEM, Injen, Spectre, Air Raid, aFe, and many more! Replacing your OEM air filter with a drop in airfilter is a great way to increase airflow without replacing your entire air intake system. Replacing your air filter is cheap, fast, and easy. Another benefit of replacing your OEM filter with a drop in.