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

• For 2001-2006 Mercedes-Benz CL55 AMG C215 (2000-2006 non-US)
• Fits both 2001-2002 5.4L Naturally Aspirated (M113) and 2003-2006 5.4L Supercharged (M113K) V8 models
• Fits LHD and RHD vehicles
• Chassis Modification Notice: C215 (CL-Class) → subframe clearance issues may require fabrication during install

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.

Common Questions

Will these exhaust headers fit both naturally aspirated and supercharged 2001-2006 CL55 AMG models?
Yes, this mid-length header kit is built for both the 2001-2002 naturally aspirated 5.4L M113 V8 and the 2003-2006 supercharged 5.4L M113K V8 in the C215 CL55 AMG, and fits both LHD and RHD vehicles.

Will this kit fit a 2000 European-market CL55 AMG?
Yes, this header kit fits the 2000 European-market C215 CL55 AMG equipped with the naturally aspirated 5.4L M113 V8 engine.

What is included with the headers and is welding required?
The kit includes the mid-length headers and downpipes. Because it uses a universal M113/M113K architecture, installation requires welding to your existing exhaust system and addressing C215 subframe clearance during fabrication.

What kind of horsepower and torque gains can I expect?
By replacing the restrictive factory log-style manifolds with wider, smoother primary tubes to lower exhaust back pressure, a naturally aspirated M113 V8 typically gains 7 to 10 percent in power, while the supercharged 5.4L M113K V8 can gain up to 15 percent in both horsepower and torque.

Do these headers fit right-hand drive (RHD) CL55 AMG coupes?
Yes, this mid-length header design fits both left-hand drive (LHD) and right-hand drive (RHD) C215 CL55 AMG models.