Exhaust Headers for Mercedes Benz C55 AMG (2005-2006) 5.4L V8

High-Flow Exhaust Headers for 2005-2006 Mercedes Benz C55 AMG (M113 / W203)

Designed for competition use, these mid-length exhaust headers replace the restrictive factory manifolds on the M113 V8 to significantly reduce exhaust gas back pressure and increase volumetric efficiency.

The Stock C-Class Restriction

The factory W203 exhaust manifolds are cast iron logs designed primarily for mass production cost and emissions compliance over optimal performance. These dense OEM manifolds severely bottleneck exhaust flow exiting the 5.4L M113 engine, creating unwanted back pressure. This localized pressure traps excessive heat inside the tight W203 engine bay and restricts the engine's high-RPM breathing capabilities. Furthermore, the stock piping diameter chokes natural V8 exhaust scavenging, limiting peak horsepower potential and muting the aggressive exhaust note inherent to the AMG pedigree.

The Engineering Solution

These mid-length, high-flow exhaust headers are engineered to maximize exhaust gas velocity and dramatically improve cylinder scavenging. By upgrading to wider primary tubes, this system effectively lowers back pressure, allowing the M113 engine to expel exhaust gases faster and operate more efficiently. The mid-length runner design provides a strategic balance, boosting mid-range torque while supporting top-end horsepower. Naturally aspirated 5.4L V8s like the C55 AMG typically gain 7 to 10 percent in horsepower and torque, while supercharged M113K engines yield up to a 15 percent increase. The kit includes downpipes but requires professional welding to integrate with your existing exhaust network. Installation demands precision due to tight clearances.

Technical Specifications

Compatibility

• 2005-2006 Mercedes-Benz C55 AMG (W203) 5.4L M113 V8
• Fits LHD and RHD vehicles.
• NOTICE: The header kits include downpipes. These headers will have to be welded to your existing exhaust system.

The Mercedes Benz Performance Standard

Optimizing the true acoustic profile of the M113 V8, these headers deliver the aggressive resonance expected from a tuned AMG while greatly improving overall engine thermal management and raw torque delivery.

Common Questions

Will these exhaust headers fit my 2005-2006 Mercedes-Benz C55 AMG?
Yes, these mid-length exhaust headers are built for the 2005-2006 Mercedes-Benz C55 AMG (W203 chassis) equipped with the naturally aspirated 5.4L M113 V8 engine, and they fit both left-hand drive (LHD) and right-hand drive (RHD) vehicles.

Will this kit fit other W203 C-Class models?
This header kit is engineered specifically for the 5.4L M113 V8 engine found in the 2005-2006 C55 AMG.

What is included in the kit?
The kit includes the mid-length high-flow exhaust headers and matching downpipes.

What kind of horsepower and torque gains can I expect?
By replacing the restrictive cast-iron factory log manifolds with wider primary tubes that reduce back pressure and improve cylinder scavenging, naturally aspirated 5.4L M113 V8s like the C55 AMG typically gain 7 to 10 percent in horsepower and torque.

Is welding required for installation?
Yes, professional installation and welding are required to integrate the included downpipes into your existing exhaust system, and precision is needed due to tight clearances in the W203 engine bay.