2011 Mercedes S-Class AMG W221 Front Engine Assembly

Description

The 2011 Mercedes-Benz S-Class AMG W221 engine assembly represents the pinnacle of German engineering, combining high performance with refined luxury. This complete front engine unit has been carefully imported, compression-tested, and inspected to meet strict quality standards, ensuring it delivers exceptional reliability and smooth performance for your Mercedes S AMG.

Engine Specifications

• Make / Model: Mercedes-Benz S-Class AMG (W221)

• Year: 2011

• Engine Code: (Varies by AMG model – M156 6.2L V8, M157 5.5L Bi-Turbo V8, or M275 6.0L V12 Bi-Turbo; confirm with VIN)

• Displacement: 5.5L – 6.2L depending on trim

• Fuel System: Direct Fuel Injection / EFI

• Mileage: ~50,000–70,000 miles (low mileage import)

• Condition: Compression-tested, verified running engine

Applications & Compatibility

This front engine assembly fits the Mercedes-Benz W221 AMG models, including:

• S63 AMG (6.2L V8 M156 / 5.5L BiTurbo M157)

• S65 AMG (6.0L V12 BiTurbo M275)

• S550/S600 AMG-line (specific trims with ECU compatibility)

We strongly recommend verifying compatibility by matching your vehicle’s VIN and engine code before purchase.

Included Components

This engine assembly typically includes:

• Long block (engine block, pistons, crankshaft, heads)

• Intake manifold

• Fuel injectors & rail

• Alternator (if available)

• Wiring harness (as pictured)

• Sensors & coils (if included in unit)

Transmission, ECU, starter, and accessories may not be included unless otherwise noted.

Performance & Reliability Highlights

1. AMG Power – Hand-built performance engines designed for maximum horsepower and torque.

2. Smooth Luxury Drive – Engineered for both city cruising and autobahn speeds.

3. High-End Engineering – Forged components, advanced fuel injection, and AMG tuning.

4. Durability – Low-mileage import engines inspected to meet strict standards.

5. OEM Fitment – Direct replacement for 2011 W221 AMG models with proper ECU pairing.

Quality Testing

All imported AMG engines undergo rigorous inspection:

• Compression & leak-down tested

• Verified oil and coolant integrity

• Inspected for cracks or damage

• Run-tested before removal

• Visual inspection of timing components and internals

Installation Recommendations

To ensure long service life, we recommend replacing the following during installation:

• Engine gaskets & seals

• Spark plugs & coils

• Water pump & thermostat

• Engine mounts (if worn)

• Fluids (oil, coolant, ATF if transmission paired)

Professional installation by a Mercedes-certified technician or AMG specialist is strongly recommended.

Warranty & Support

• Warranty: 6-month limited warranty on internal components

• Support: Technical advice for installation and compatibility

• Shipping: Secure palletized freight available worldwide

Conclusion

This 2011 Mercedes-Benz AMG W221 front engine assembly is the perfect OEM replacement for your luxury performance sedan. Whether restoring your AMG to peak performance or replacing a damaged motor, this low-mileage, compression-tested engine delivers the power, refinement, and reliability Mercedes-Benz is known for. Backed by warranty and quality testing, it’s a trusted choice for any AMG enthusiast or repair project.