M156 82mm Throttle Body Upgrade – C63 E63 CLS63

82mm Throttle Body Upgrade – M156 6.2L 63 AMG

Genuine Mercedes-Benz 82 mm electronic throttle body upgrade for the M156 6.2L V8 — increased airflow, sharper throttle response, and a proven foundation for high-performance 63 AMG builds.

This 82 mm OEM Mercedes-Benz throttle body is a well-known upgrade for M156 6.2L AMG engines found in C 63, E 63, CLS 63, S 63, CL 63, and CLK 63 AMG models. When paired with a proper throttle body adapter plate and ECU calibration, it reduces inlet restriction and supports higher horsepower, improved mid-range torque, and noticeably crisper throttle response.

⚙️ Key Features – 82 mm M156 Throttle Body

• OEM Mercedes-Benz unit: Genuine electronic throttle body, not an aftermarket replica.
• 82 mm large-bore inlet: Significant airflow increase over the factory ~74 mm unit.
• Improved power potential: Supports measurable gains in horsepower and torque when tuned.
• Smoother throttle response: Faster airflow transition improves drivability and pedal feel.
• Ideal for built M156 setups: Pairs well with long-tube headers, intake upgrades, and exhaust.
• 90-day warranty: Covers electronic and mechanical operation from date of purchase.

🔧 Required for M156 – Adapter Plate & ECU Tune

To install this 82 mm throttle body on an M156 engine, the following are required:

• Throttle body adapter plate to convert the factory 74 mm bolt pattern to 82 mm. We recommend our dedicated M156 Throttle Body Adapter Plate .
• ECU calibration to fully utilize the increased airflow and maintain proper throttle behavior.

📈 Real-World Benefits on the M156 Platform

• More airflow headroom for high-RPM pulls and track driving.
• Stronger mid-range when combined with intake and exhaust upgrades.
• Improved top-end power on long-tube header, camshaft, and tuned builds.
• Scales with modifications: The more airflow-focused mods you add, the more this upgrade pays off.

✔️ Compatibility – M156 6.2L AMG V8

Fits the following Mercedes-AMG models equipped with the M156 6.2L V8 when used with the correct adapter plate: