GReddy "Airinx" Universal Air Filter Specifications Made in Japan, the "Airinx" universal filter is identical to those included in GReddy turbo kits, or GReddy direct intakes. Over time your OEM ail filter can become dirty, greasy and worn out, reducing your engines performance. To improve filtration and you engines suction, GReddy propose a high quality filter, available in black they are both efficient and discreet. Please verify the air filter size is compatible with your vehicle. Product features Polyurethane made monolithic high performance dry filter. Three-layer structure of steel net and high performance fiber filter realizes high rigidity and intake performance Filter top, filter base, pipe opening made of polyurethane. Due to the integral molding structure with the filter, it is excellent in flexibility, durability and impact resistance. By adopting the sub filter [inverted top] on the filter top, it secures a wide filter surface area and increases the suction efficiency. You can dress up the engine room with the aluminum engraved design on the aluminum top cover and the included aluminum emblem. When using this product, the air-fuel ratio may become thinner due to the improvement of suction efficiency and individual differences of the vehicle. Always check the air-fuel ratio at a special shop. Also, when using it in conjunction with other tuning parts, please check the air-fuel ratio as well as above. Specifications Available Sizes S Size – 50/60/70/80mm M Size – 70/80/100mm Models CODE Product 12500601 GReddy AIRINX S for GENERAL 50/60mm 12500602 GReddy AIRINX S for GENERAL 70mm 12500603 GReddy  AIRINX S for GENERAL 80mm 12500631 GReddy AIRINX M for GENERAL 70mm 12500632 GReddy AIRINX M for GENERAL 80mm 12500633 GReddy AIRINX M for GENERAL 100mm *Image may differ from final product.