Includes (1) MTD 951-11943A Muffler Compatible models include MTD 13AX915T004 (2011), 13AX771S004 (2011), 13AX771S004 (2012), 13AX771T004 (2011), 13AX795T004 (2013), 13AX935T004 (2014), 13AX795S004 (2011), 13AX795S004 (2012), 13AX795S004 (2013), 13AX795S004 (2014), 13AX915T004 (2013), 13AX915T004 (2012), 13AM77LS058 Transmatic, YT4220 (13AX93KS897)(2014), YT4220 (13AX91KS897)(2013), 13AV91GS897 (V91GS)(2011), YT542KH (13AV91GS897)(2012), YT542K (13AV90GS897)(2012), YT4218 (13AV90KS897)(2014), 13AV90GS897 (V90GS)(2011), 13AX79ST099 MTD Genuine Parts are made for MTD’s family of brands including Troy-Bilt, Yard Man, Arnold, Remington, Yard Machines, Columbia, Murray, Robomow, and more. MTD brands, products, and parts are backed by a strong network of MTD sales, service, and support. Founded in Cleveland, Ohio in 1932, MTD Products Inc is a leader in the design and manufacture of outdoor power equipment such as lawnmowers and snow blowers.