The Skunk2 cold-air intake coupler for 2012–2013 Honda Civic Si enables installation of Skunk2's Civic Si cold-air intake when using a Pro Series or RBC intake manifold. Made from fiber-reinforced silicone, the coupler is intended to join the intake to RBC/Skunk2 manifolds and simplify fitment. It serves as a purpose-built adapter for the listed Civic Si model years and manifold types noted.
Skunk2 12-13 Honda Civic Si Throttle Body Intake Coupler for Pro Series /RBC Manifold