4 Inch T304 Straight Stainless Steel Exhaust Muffler Pipe 30" Straight Length Mandrel Exhaust Tube 4" Muffler Replacement Pipe 4'' x 30'' is up for auction in Automotive. The current bid is $2.50, 94% below the $38.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.