TurboWorks exhaust manifold made of 304SS stainless steel Fits: 2008 2015 MERCEDES-BENZ C63 AMG Base 6.3 L 2012 2014 MERCEDES-BENZ C63 AMG Base SEDAN, 6.3 L 2012 2014 MERCEDES-BENZ C63 AMG Base COUPE, 6.3 L 2012 2012 MERCEDES-BENZ C63 AMG Black Series 6.3 L 2007 2008 MERCEDES-BENZ CLK63 AMG Base 6.3 L 2008 2008 MERCEDES-BENZ CLK63 AMG Black Series 6.3 L 2007 2011 MERCEDES-BENZ CLS63 AMG Base 6.3 L 2007 2009 MERCEDES -BENZ E63 AMG Base 6.3 L 2010 2011 MERCEDES-BENZ E63 AMG Base 6.3L 2009 2012 MERCEDES-BENZ SL63 AMG Base 6.3 L When tuning the engine, the exhaust manifold should be replaced at the very beginning, because the exhaust gases extruded from the cylinder go to the manifold exhaust pipe, which is part of the engine body, is then routed to the first section of the exhaust pipe, then to the muffler, or several silencers in series, and then to the outlet portion of the exhaust pipe. We also have lambda probe adapters that eliminate the catalyst error. Exhaust flange window diameter: 45x60mm Exhaust diameter: 53mm Additional accessories are also available for exhaust manifolds: & nbsp