Qiankun Replacement Muffler Assembly for Stihl 029 039 Ms290 Ms310 Ms390 Chainsaw Quality Aftermarket parts, Non-original and Brand New Fit for chainsaw models 029 MS290 039 MS390 MS310 Replace Number: 11271400601 1127-140-0601 Include: 1x MUFFLER 1x COVER 2x GASKETS 3x SCREWS 1x BOLTS