Exhaust Headers for Mercedes Benz S55 AMG (2001-2006) 5.4L Supercharged V8High Flow Exhaust Headers for 2001 2006 Mercedes Benz S Class (M113K W220) Designed for competition use, these mid length exhaust headers eliminate OEM restrictions to sharply lower back pressure and increase scavenging efficiency on the M113K V8. The Stock S Class Restriction The M113K Supercharged V8 generates a tremendous volume of exhaust gas, but the factory W220 manifolds are severely compromised by tight packaging constraints and cost effective