The Skunk2 Pro Series intake manifold for 2006–2010 Honda Civic Si (K20Z3) engines is a cast-aluminum, direct-fit replacement that increases plenum volume and runner size for improved mid-range and top-end power. It accepts a 72mm throttle body opening, is inlet-matchable to 76mm, and includes a thermal-insulated intake manifold gasket for a bolt-on installation without drilling or modification.
Skunk2 Pro Series 06-10 Honda Civic Si (K20Z3) Intake Manifold (Race Only)