M156 Throttle Body Adapter Plate – 74mm to 82mm Billet Upgrade for AMG

63 AMG Throttle Body Adapter Plate – M156 6.2L V8

Upgrade your M156’s airflow by converting factory 74 mm throttle bodies to 82 mm high-flow units for increased power and sharper throttle response.

This CNC-machined billet throttle body adapter plate is engineered exclusively for the Mercedes-AMG M156 6.2L V8. By adapting the stock mounting pattern to larger 82 mm throttle bodies, it significantly reduces intake restriction and supports both naturally aspirated and fully-bolted 63 AMG builds. A must-have upgrade for enthusiasts pushing the M156 platform.

⚙️ Key Features – M156 Throttle Body Adapter

• Billet Aluminum Construction: CNC-machined for perfect sealing, durability, and long-term reliability.
• 74 mm → 82 mm Conversion: Expands throttle inlet diameter for dramatically improved airflow.
• Power Gains: With 82 mm throttle bodies and tuning, owners see up to +12 whp / +8 wtq depending on mods and calibration.
• Bolt-On OEM Fitment: Retains factory throttle motor alignment and intake manifold geometry.
• Optimized for Tuned Builds: Best results with long-tube headers, intake upgrades, and ECU tuning.

🔧 2× 82 mm Throttle Bodies Required

This adapter plate does not include throttle bodies. You’ll need a pair of upgraded 82 mm units for the conversion:

📈 Performance Advantages

• Higher top-end airflow for improved peak horsepower on M156 63 AMG engines.
• More responsive mid-range due to reduced intake restriction.
• Smoother throttle behavior with a larger throttle blade surface area.
• Future-proof foundation for NA builds or future forced-induction setups.

✔️ Compatibility – M156 6.2L AMG V8