Exhaust Headers for Mercedes Benz CL55 AMG (2001-2006) 5.4L Supercharged V8

High-Flow Exhaust Headers for 2001-2006 Mercedes Benz CL-Class (M113K / C215)

What it Does: Replaces the restrictive factory log-style exhaust manifolds with mid-length, high-flow tubing to significantly reduce exhaust gas back pressure and increase supercharger efficiency.

The Stock CL-Class Exhaust Restriction

The factory exhaust manifolds on the M113 and M113K V8 engines utilize a compressed, log-style design engineered for packaging and emissions compliance rather than optimal pulse scavenging. This OEM architecture creates immense exhaust gas back pressure, especially on the 5.4L supercharged variants. Elevated back pressure restricts volumetric efficiency and leads to severe heat soak in the aluminum cylinder heads. This thermal accumulation robs the engine of potential spark advance, ultimately bottlenecking horsepower output and suffocating the aggressive AMG exhaust note.

The Engineering Solution

Transitioning to a mid-length header architecture directly targets these exhaust flow restrictions. By utilizing wider, smoother primary tubes, this system effectively scavenges exhaust pulses, lowering back pressure and allowing the M113K engine to breathe freely. A normally aspirated V8 typically realizes a 7 to 10 percent increase in power, while the supercharged 5.4L can yield up to a 15 percent gain in both horsepower and torque. Installation Note: These header kits include downpipes but are a universal M113/M113K design. Installation requires welding to your existing exhaust system, and builders should expect to address chassis-specific clearance issues during fabrication. For competition use only.

Technical Specifications

Compatibility

• Fits LHD and RHD vehicles
• For Mercedes-Benz SL55 AMG
• For Mercedes-Benz CLS55 AMG
• For Mercedes-Benz E55 AMG
• For Mercedes-Benz C55 AMG
• For Mercedes-Benz SL500 AMG
• For Mercedes-Benz CLS500 AMG
• For Mercedes-Benz E500 AMG
• Chassis Modification Notice: W211 (E-Class) → steering shaft interference common
• Chassis Modification Notice: W220 / C215 (S / CL) → subframe clearance issues
• Chassis Modification Notice: R230 (SL) → tight around transmission tunnel
• Chassis Modification Notice: W203 (C55 AMG) → extremely tight engine bay

The Mercedes Benz Performance Caliber

Maximizing the output of your AMG requires precise calibration and unhindered airflow. Upgrading to high-flow headers unlocks the raw power and distinctive V8 growl that defines the European muscle car experience, ensuring maximum performance for track and competition use.