Amazon.com : Briggs & Stratton 392989 Muffler For 9-16 HP Single Cylinder Engines : Lawn Mower Mufflers : Patio, Lawn & Garden
Amazon.com: Briggs & Stratton 498984S Super Lo-Tone Muffler For 8 and 11 HP Horizontal Engines and 18 HP Opposed Twin Horizontal Engines : Patio, Lawn & Garden