The exhaust manifolds found in the 1995-2002 Chevy Cavalier and Pontiac Sunfire were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-1 off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner. Tubing has been optimized for the 2.2L engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.
Made of High Quality Stainless Steel with Computerized Mandrel-Bends for Strength and Durability i.e. Maximizing Smoothest High Exhaust Air Flow Rate 4-1 High Performance JDM Racing Spec. Design, Produces the Most Top End Power Offers the Best Flow Characteristics for the Engine at High Engine Speeds Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq. Inlet/ Outlet:1.5"(OD) / 2.25"(OD) / 16 Gauge Wall Piping / TIG Welded CNC Machine Flange / Metal Gasket IncludedThis product is compatible with: 95-02 Pontiac Sunfire 95-02 Chevrolet Cavalier Fits Models with 2.2L L4 Engine Only