This is the Q-18 Tuned Pipe Exhaust System for use on the SuperTigre .18 Inboard Marine Engine (SUPG0718). FEATURES: Aluminum construction Silver in color INCLUDES: One Q-18 Tuned Pipe (available separately, SUPG6003) One Header Silicon Coupler Two Zip Ties One Header One Gasket Two Washers Two 3x30mm Cap Head Screws One Exhaust Tube REQUIRES: Installation on the engine cnh 5/8/09 ir/jxs