This exhaust manifold for the 2001-2005 Honda Civic D17 SOHC Non-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.
The 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.
Made of high quality T-304 stainless steel material
TIG welded CNC machine flange
O2 sensor bung insertion; Metal gasket included
4-1 Racing design
Increase high flow air, instantly gain 10 to 15 Hp. / Tq.
Professional Installation is Highly Recommended
No Instruction Included
1 x Header Exhaust System
Hardware as Shown in the Picture above
2001-2005 CIVIC DX/LX D17 1.7L EM2(Except 2002 Honda Civic LX Coupe 2-Door 1.7L)