Stainless Steal Manifold Header for Honda Civic EX (2001-2005) 1.7L SOHC EngineUpgrade your '01 '05 Civic EX with a performance header designed for the D17A2 1. 7L enginegain horsepower, improve throttle response, and enjoy a sportier exhaust note. Wake Up Your D17A2: Real Gains, Real Performance The seventh gen Civic EX earned its reputation as a dependable daily driver with excellent fuel economy and Honda's signature build quality. With the D17A2 1. 7L engine under the hood, these cars delivered a solid 127 horsepowerenough