OS Max #871 Muffler for 10 & 15FP, 15LA, 12-15 CZ and CV series engine is constructed of aluminum. Adjustable exhaust outlet on rear of muffler. Pressure fitting (installed). This product includes one complete #871 muffler w/pre-installed pressure nipple. Four 2.5mm x 24mm screws, for mounting muffler to engine.
Phillips screwdriver for installation