M156 Long Tube Headers with Midpipes for C63, E63, CLS63 AMG

M156 Long Tube Performance Headers

Unleash the full potential of your naturally aspirated 6.3L AMG with our long tube headers for the M156 engine. Designed to maximize power across the RPM range, these headers deliver exceptional gains in both low-end torque and high-end horsepower.

Dyno-tested to produce up to +39 WHP and +34 lb-ft of torque as a standalone modification, these headers are constructed from T-304 stainless steel for durability and performance. Each kit includes midsection piping and is engineered for competition-grade performance.

⚙️ Key Features

• ✅ Long tube design enhances scavenging and power delivery
• 🚀 +39 WHP / +34 TQ gains on stock M156 6.3L engines
• 🔧 Includes midsection piping (midpipes)
• 🛠️ T-304 stainless steel construction
• 📦 W204 midpipes are direct fit — other chassis require adjustment
• 🌍 Compatible with LHD and RHD vehicles

📦 Fitment Compatibility

⚠️ Weld-in catalytic converters are required with this system for all chassis.

Only W204 midpipes are direct fit. Others may require adjustment or fabrication.

Pair with our Custom ECU Tune for M156 for maximum performance gains and responsiveness.

💎 Why Choose BenzUnited Parts?

• 🔩 Trusted by AMG tuners & performance shops worldwide
• 📦 Fast shipping, expert support, and proven fitment
• 🔍 Focused exclusively on high-performance Mercedes platforms

⚠️ Competition Use Only: This product is not legal for highway use. You must acknowledge this is for off-road or race purposes only before purchase.

Ships in 1–2 business days. Professional installation required.