Exhaust Headers for Mercedes Benz CLS55 AMG (2006-2006) 5.4L Supercharged V8High Flow Exhaust Headers for 2006 2006 Mercedes Benz CLS Class (M113K W219) Replaces restrictive factory exhaust manifolds with wider, mid length pipe architecture: Lowers exhaust gas back pressure and maximizes the scavenging efficiency of the supercharged M113K engine. The Stock CLS Class Exhaust Restriction The OEM cast exhaust manifolds on the M113K V8 are notoriously bottlenecked, prioritizing compact packaging and noise reduction over