Performance Air Intake for Cavalier / Sunfire 1998-2002 With 2.3L 2.4L EnginesOptimize Airflow for your Cavalier and Sunfire Quad 4 Engine Who Its For: Designed specifically for Chevrolet and Pontiac owners running the high revving Quad 4 engine in the J Body and N Body chassis. The Problem: The Quad 4 engine is a DOHC powerhouse for its era, but the factory air box is a maze of baffled plastic and restrictive paper filters. This stock setup was designed for maximum noise suppression rather than performance, which often leads