fits model: 550i, X5, Gt. make: Bmw. year: 2008–2014.

( Manufacturer Part Number: 756627703 ), ( Part Type: Motor Engine Cylinder Head ), ( Oe/oem Part Number: 08 09 10 11 12 13 14 2008 2009 2010 2011 2012 2013 2014 ), ( Manufacturer Warranty: 30 Day )
The **BMW 756627703** is a high-performance, precision-engineered cylinder head assembly designed exclusively for the **F07 generation 550i GT X5 (2008 2014)**, featuring the iconic **4.4-liter TwinPower Turbo V8 engine**. This component represents the pinnacle of BMW s engineering prowess, combining advanced materials, aerodynamics, and high-revving performance to deliver an exhilarating driving experience. Crafted from lightweight yet durable **aluminum alloy**, the cylinder head is meticulously machined to ensure optimal thermal efficiency, minimizing heat retention while maximizing power output. Its **four-valve-per-cylinder architecture** allows for superior airflow, enabling the engine to breathe freely under heavy loads, whether cruising at highway speeds or unleashing its 400 horsepower and 425 lb-ft of torque during spirited acceleration. The head incorporates **dual overhead camshafts (DOHC)** per bank, synchronized by a robust timing chain system, ensuring precise valve actuation and minimizing friction for enhanced reliability. The **intake and exhaust ports** are contoured to optimize combustion efficiency, while the **integrated turbocharger wastegates** and **intercooler piping** are engineered to maintain consistent boost pressure, even under aggressive driving conditions. This cylinder head is also compatible with BMW s **Valvetronic variable valve lift system**, which dynamically adjusts valve lift to improve fuel economy and reduce emissions without compromising performance. Whether restored to stock specifications or modified for enhanced airflow, the **756627703** remains a critical component in maintaining the 550i GT X5 s legendary blend of luxury, power, and precision. For enthusiasts seeking to preserve or upgrade their vehicle s performance, this part ensures seamless integration with the engine bay s intricate network of hoses, sensors, and cooling systems, making it an essential replacement for those restoring or maintaining the integrity of this high-performance BMW.
### **Pros and Cons of Buying a BMW F07 550i xDrive (2008-2014) with a 4.4L V8 Engine (Cylinder Head Right Side)**
#### **Pros**
1. **Performance and Power**
The 4.4L V8 engine in the F07 550i xDrive produces **407 horsepower and 406 lb-ft of torque**, delivering strong acceleration and a smooth, high-revving V8 sound. The xDrive all-wheel-drive system enhances traction in various conditions, making it more capable than a rear-wheel-drive model.
2. **Luxury and Comfort**
The F07 is a premium sedan with high-quality materials, a spacious cabin, and advanced features for its time, including **adaptive cruise control, lane departure warning, and a premium sound system**. The ride is comfortable, with good isolation from road noise.
3. **Reliability of the 4.4L V8 (When Maintained Properly)**
The N63 engine (used in the 550i) is a robust unit when kept up with **regular oil changes (synthetic, high-quality), valve cover gaskets, and cooling system maintenance**. Many examples last well over 200,000 miles with proper care.
4. **Resale Value and Prestige**
BMW sedans, especially the 5 Series, hold their value better than many competitors. The 550i xDrive remains a desirable model, appealing to buyers who value luxury and performance.
5. **All-Wheel Drive Advantage**
The xDrive system provides better handling in snow, rain, and off-road conditions compared to a rear-wheel-drive 550i, making it a more versatile choice for those who need extra grip.
6. **Aftermarket and Modification Potential**
The 4.4L V8 has a strong aftermarket support, with options for **tuning, exhaust upgrades, and suspension modifications** to enhance performance and aesthetics.
7. **Spacious Interior and Practicality**
The F07 offers a **large cabin with ample legroom, a comfortable driver s seat, and a high-quality infotainment system** (though the iDrive can be clunky compared to newer models).
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#### **Cons**
1. **High Maintenance Costs**
BMWs, especially luxury models, are **expensive to maintain**. Common issues include:- **Valvetronic motor failure** (can cost $1,000 to replace).
- **Cooling system failures** (water pump, thermostat, hoses often requiring frequent replacements).
- **Electrical gremlins** (sensor failures, iDrive glitches, infotainment crashes).
- **Transmission issues** (some F07 550i xDrive models have reported **8-speed automatic transmission problems**, requiring costly rebuilds).
2. **Engine-Specific Weaknesses**
- The **N63 V8 is prone to oil consumption** if not maintained properly (check oil levels frequently).
- **Carbon buildup on intake valves** (common in high-mileage V8s) can reduce performance unless a **valve cleaning service** is performed.
- **Head gasket failures** (though rare, they can be catastrophic if ignored).
3. **Fuel Economy**
The 4.4L V8 is **not fuel-efficient**, averaging **14-16 MPG in the city and 20-22 MPG on the highway**. High fuel costs can add up over time.
4. **Depreciation and Age**
The F07 is **nearing 15 years old**, meaning:- **Parts may become harder to find** as BMW phases out older models.
- **Recalled components** (e.g., brake master cylinders, airbag modules) may require professional attention.
- **Safety ratings** are outdated compared to modern vehicles.
5. **Rust and Body Issues**
Older BMWs (especially in snowy or humid climates) can develop **rust in wheel wells, undercarriage, and rocker panels**. A thorough inspection is crucial.
6. **Comfort vs. Sportiness Trade-Off**
While the F07 is comfortable, it is **not as sporty as the F10 5 Series**. The suspension is softer, and the steering feels less precise compared to newer BMWs.
7. **Infotainment and Tech Limitations**
The **iDrive system is outdated by today s standards**, lacking modern features like **Apple CarPlay, Android Auto, or wireless connectivity**. The screen resolution is also lower than in newer models.
8. **Potential for Hidden Problems**
- **Exhaust manifold leaks** (common in the N63).
- **Turbocharger issues** (if the engine was modified or overworked).
- **Suspension wear** (control arms, bushings, shocks may need replacement).
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### **Conclusion**
The **BMW F07 550i xDrive (2008-2014) with a 4.4L V8** is a **strong choice for buyers who prioritize luxury, power, and all-wheel-drive capability** but only if they are prepared for **higher maintenance costs and potential reliability concerns**. It remains a **great daily driver for those who enjoy a smooth, high-performance sedan** and can afford the upkeep.
**Best for:**- Buyers who want a **premium, comfortable, and capable luxury sedan**.
- Those who **enjoy the V8 sound and driving dynamics**.
- People who **can budget for maintenance** (oil changes, cooling system, electrical checks).
**Not ideal for:**- **Budget-conscious buyers** (high repair costs outweigh savings).
- Those who **prioritize fuel efficiency** (the V8 is thirsty).
- Buyers who **want modern tech** (infotainment, safety features).
- People who **don t want to deal with potential engine or transmission issues**.
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### **Recommendation**
If you find a **well-maintained F07 550i xDrive with a clean service history**, it can be an **excellent purchase** especially if you:**Get a pre-purchase inspection (PPI) from a BMW specialist** (focus on engine, transmission, cooling system, and electrical components).
**Verify oil consumption history** (low oil levels can indicate serious issues).
**Check for recalls and service bulletins** (BMW may have addressed some common problems).
**Budget for future maintenance** (expect **$1,000 $3,000/year** in upkeep).
**Alternative Considerations:**- If **reliability is a concern**, consider a **later-model F10 550i xDrive (2010 )** it has some refinements over the F07.
- If **fuel economy is a priority**, a **535i (3.0L twin-turbo inline-6)** is more efficient but less powerful.
- If **you want a newer BMW**, a **used F10 or F11 (2017 ) 5 Series** offers better tech and safety features.
**Final Verdict:**The **F07 550i xDrive is a fantastic luxury sedan for the right buyer** one who values **performance, comfort, and is willing to invest in its upkeep**. However, **it is not a "set-and-forget" car**, and buyers must be **proactive about maintenance** to avoid costly failures. If you re prepared for that, it remains one of the best **premium sedans** of its era.
LOT # 080222. Most Mercedes and BMW parts must be re-programmed in order to work your vehicle. 2011 BMW 550I AWD 4.4L TURBO AT. Also, most part numbers must match in order to fit your vehicle.
MILEAGE: 72,372. COLOR EXTERIOR: B03 DAMAST-ROT.