Certain 57-series intakes are designed to function with the factory air box, and feature a panel filter paired with a custom roto-molded intake tube. Roto-molded HDPE intake tube paired with oversized oiled cotton air filter.
KN 63-5506 Performance Round Aircharger Intake System for Mitsubishi Lancer 2.0L
KN 63-3115 Round Performance Air Intake System for 17-20 Blazer/Acadia/XT5
KN 63-3517 Round 63 Series Panel Aircharger Intake System for Honda Civic 2.0L
KN 69-4520TP Round Cold-Air Intake System Typhoon Kit for 10-11 Camaro 3.6L V6
KN 69-4526TS Round Cold-Air Intake System Typhoon Kit for 13-14 Impala 3.6L V6
Spectre 880136 High Performance Round Air Filter - 14" X 3", 1330CFM 800HP