BenzUnited Parts
M156 Throttle Body Upgrade Kit – Dual 82mm Throttle Bodies, Billet Adapter Plate & Velocity Stacks | C63 E63 CLS63 S63 AMG
M156 Throttle Body Upgrade Kit – Dual 82mm Throttle Bodies, Billet Adapter Plate & Velocity Stacks | C63 E63 CLS63 S63 AMG
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The M156 Throttle Body Upgrade Kit is the complete 82 mm throttle body conversion for the Mercedes-AMG 6.2L V8 in one order: two genuine Mercedes-Benz 82 mm electronic throttle bodies, the CNC-machined billet adapter plate that mounts them in place of the factory 74 mm units, and a pair of velocity stacks with hardware. It fits the 2008–2014 C63 AMG sedan, 2015 C63 AMG coupe, 2007–2010 E63 AMG, 2007–2010 CLS63 AMG and 2008–2010 S63 AMG. The larger bores reduce inlet restriction; an ECU calibration is required to use the extra airflow.
What's in the Kit
- • 82 mm throttle bodies (2) — genuine Mercedes-Benz electronic throttle bodies
- • Billet adapter plate (1) — CNC-machined aluminum, converts the factory 74 mm throttle body bolt pattern to 82 mm
- • Velocity stacks (2) — trumpet-shaped inlets, with mounting hardware
Key Features
- • Throttle bore: 82 mm, up from the factory 74 mm
- • Throttle bodies: genuine Mercedes-Benz electronic units, not aftermarket replicas
- • Adapter plate: CNC-machined billet aluminum; keeps the factory throttle motor alignment and intake manifold geometry
- • Velocity stacks: smooth the airflow into the throttle bodies and reduce turbulence
- • Installation: bolt-on; ECU calibration required
Vehicle Compatibility
| Model | Body Style | Engine | Years | Chassis |
|---|---|---|---|---|
| C63 AMG | Sedan | M156 6.2L V8 | 2008–2014 | W204 |
| C63 AMG | Coupe | M156 6.2L V8 | 2015 | C204 |
| E63 AMG | Sedan | M156 6.2L V8 | 2007–2009 | W211 |
| E63 AMG | Sedan | M156 6.2L V8 | 2010 | W212 |
| CLS63 AMG | 4-Door Coupe | M156 6.2L V8 | 2007–2010 | C219 / W219 |
| S63 AMG | Sedan | M156 6.2L V8 | 2008–2010 | W221 |
Note: US-market models.
Warranty, Returns & Shipping
Warranty: 90-day limited warranty on the throttle bodies; 1-year limited warranty on the velocity stacks and the adapter plate against manufacturing defects.
Returns: 30-day returns from delivery. Change-of-mind returns must be unused, uninstalled and in the original packaging; buyer pays return shipping.
Shipping: Free ground shipping with tracking via UPS, FedEx or USPS. Ships within 2–3 business days.
Frequently Asked Questions
Do I need a tune with the M156 82 mm throttle bodies?
Yes. The 82 mm throttle bodies need an ECU calibration to use the extra airflow and to keep throttle behavior correct. A tune is not included in the kit.
Are the throttle bodies genuine Mercedes-Benz?
Yes. Both are new, genuine Mercedes-Benz electronic throttle bodies, not aftermarket replicas.
Is the install bolt-on?
Yes. The billet adapter plate converts the factory 74 mm throttle body bolt pattern to 82 mm and keeps the factory throttle motor alignment and intake manifold geometry. The velocity stacks mount with the included hardware. After installation, the ECU needs to be calibrated.
Can I buy the pieces separately?
Yes. The throttle bodies, the adapter plate and the velocity stacks are each sold on their own, and all three are listed under Pairs well with on this page.
