Honda Civic EX 1.7L D17A2 (2001-05)
The exhaust manifold found on the 2001-2005 Honda Civic D17 SOHC VTEC 4 Cylinder Engine 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 1.7L engine. 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 steel covered with metallic ceramic coating.with 4-1 direct bolt-on design
TIG welded CNC machine flange
O2 sensor bung insertion / Metal gasket included / Inlet: 1.5" / Outlet: 2.25"
Increase high flow air, instantly gain 10 to 15 Hp. / Tq
Application: Please check part finder on top of the page (Professional Installer is Highly Recommended) (No Instruction Included)