Exhaust Muffler for 2004-2007 Buick Rainier 4.2L, 2003-2005 Isuzu Ascender 4.2L, and 2002-2004 Oldsmobile Bravada 4.2LNortheastern Exhaust Direct Fit Exhaust Muffler and Tail Pipe System Kit Upgrade with our 409 Grade Stainless Steel Exhaust Muffler and Tail Pipe for durable, rust resistant performance with clamps included for free. Direct fit for 2004 2007 Buick Rainier 4. 2L, 2003 2005 Isuzu Ascender 4. 2L, and 2002 2004 Oldsmobile Bravada 4. 2L 409 Stainless Steel Tough, Rust Resistant, Reliable