M156 82mm Throttle Body Upgrade – Billet Adapter Plate - 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 – more airflow, sharper response, and a solid foundation for high-performance 63 AMG builds.

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

⚙️ Key Features – 82 mm M156 Throttle Body

• OEM Mercedes-Benz unit: Genuine electronic throttle body, not a generic aftermarket part.
• 82 mm large-bore inlet: Substantial airflow increase over the factory ~74 mm throttle body.
• Improved power potential: Supports noticeable gains in peak horsepower and mid-range torque when tuned.
• Smoother, sharper response: Faster airflow transition improves throttle feel and drivability.
• Perfect for built M156: Ideal with long-tube headers, intake upgrades, and high-flow exhaust.
• 90-day warranty: Coverage on electronic and mechanical operation from date of purchase.

🔧 Required for M156 – Adapter Plate & Tune

To run this 82 mm throttle body on an M156 6.2L AMG, you will need:

• 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 take advantage of the additional airflow and maintain correct throttle behavior.

📈 Real-World Benefits on M156

• Increased airflow headroom for high-rpm pulls and track use.
• Better mid-range punch when combined with intake and exhaust upgrades.
• Stronger top-end on long-tube header / cam / tune builds.
• Scales with mods: The more you do (intake, headers, tune), the more this upgrade helps.

✔️ 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: