Brand New factory sealed Briggs and Stratton OEM ADAPTER-MUFFLER. Current 2011 Briggs and Stratton part, Subject to availability from Briggs and Stratton. If not in stock you will be notified within 1 business day.. Check your Owners/Parts manual for correct application and fit. This is the current part description provided by the Original Equipment Manufacturer (OEM). To confirm your parts fit or description, Email us with your Make, Model and Serial Numbers.