BMW 7573938 Right Passenger Engine Cylinder Head 4.4L N63

( Manufacturer Part Number: 7573938 ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: 7573938 /7 573 938 / 7-573-938, 7566279 / 7 566 279 / 7-566-279 )

Review BMW 4.4l N63 Right Passenger Side Engine Cylinder Head Oem fits X5 X6 550 750 2009–2014

The **BMW 7573938 (09-14 550i/750i X5/X6) 4.4L N63 Right Passenger Engine Cylinder Head** is a meticulously engineered component designed for the high-performance twin-turbocharged inline-six (N63) powertrain found in BMW s flagship luxury SUVs and sedans from the 2009 to 2014 model years. This cylinder head, manufactured to BMW s exacting specifications, is a critical element of the N63 engine s advanced architecture, featuring a robust **aluminum alloy construction** with precision-machined combustion chambers and high-pressure direct fuel injection ports. The right-side head, specifically, houses the **intake valves** for cylinders 1, 3, and 5, while the exhaust valves for cylinders 2, 4, and 6 are managed by the left-side counterpart, ensuring balanced airflow and thermal management. Equipped with **sodium-filled exhaust valves** and **titanium intake valves**, this head is optimized for durability and performance, capable of withstanding the extreme pressures generated by the twin-turbocharged setup. The **integrated oil spray nozzles** within the combustion chambers further enhance thermal efficiency by cooling the valves and pistons, reducing the risk of pre-ignition and extending component lifespan. Designed to work in tandem with the **N63 s twin-scroll turbochargers**, this cylinder head ensures precise fuel-air mixture delivery, contributing to the engine s **550 horsepower (550i) or 617 horsepower (750i)** output while maintaining reliability under heavy loads. Whether used in a **restoration project, performance upgrade, or replacement for a failed head**, this part adheres to BMW s **OEM tolerances and machining standards**, ensuring seamless integration with the engine s supporting systems, including the **high-pressure fuel pump, turbochargers, and exhaust manifold**. Its compatibility extends across the **F10 550i/750i, F15 X5 (550i/750i), and F16 X6 (550i/750i)** platforms, making it a versatile choice for enthusiasts seeking to maintain or enhance the performance of their N63-powered BMW. Built to endure the demands of both daily driving and spirited acceleration, this cylinder head exemplifies BMW s commitment to blending luxury with cutting-edge engineering.

### **Pros and Cons of Buying a BMW N63 (4.4L) Engine with a Right-Passenger-Side Cylinder Head Issue (2009 2014 7 Series, 550i/750i, X5/X6)**

#### **Pros**

1. **Power and Performance**

The N63 4.4L twin-turbo V8 is one of BMW s most capable engines, producing **400 500 hp** (depending on tuning) with strong low-end torque. It handles well on twisty roads and offers a premium driving experience, especially in the 7 Series and X6.

2. **Proven Reliability (When Maintained Properly)**

The N63 is a robust engine when serviced correctly. Many units last **200,000 miles** with proper oil changes, turbo maintenance, and cooling system upkeep. The 2009 2014 models (pre-2015 updates) are less refined but still capable.

3. **Aftermarket Support and Tuning Potential**

The N63 has a **thriving aftermarket**, with options for **stage 1 3 tuning**, cold air intakes, exhaust upgrades, and even **nitrous kits**. This makes it a great choice for enthusiasts who want to push performance.

4. **Luxury and Comfort**

The 7 Series and X6 are **flagship BMWs**, offering **premium interiors, advanced tech (for the era), and a smooth ride**. The V8 sound and power delivery make long drives enjoyable.

5. **Resale Value (Compared to Some Competitors)**

While not as high as a 3 Series or M models, the 7 Series and X6 still hold value better than many luxury SUVs or sedans in this class.

6. **Potential for Restoration**

If the engine is otherwise sound, a **right-side cylinder head rebuild** can be a cost-effective way to restore performance. Many mechanics specialize in N63 work, making repairs more accessible.

---

#### **Cons**

1. **Common Issues with the Right-Passenger Cylinder Head**

- The **right-side cylinder head** (facing the passenger side) is notorious for **warping, cracking, or leaking coolant** due to **thermal stress and poor cooling**. This can lead to **loss of compression, misfires, or catastrophic failure**.

- **Coolant leaks** (often near the head gasket or cylinder head bolts)

- **Misfires, rough idle, or loss of power**

- **Overheating** (due to reduced cooling efficiency)

- **Oil dilution** (if coolant enters the oil system)

- **Repair cost**: A **rebuilt or replaced right-side cylinder head** can range from **$3,000 $6,000 **, depending on labor and parts.

2. **Turbocharger and Oil System Problems**

- The **turbochargers** (especially the **first-gen N63**) are prone to **oil starvation, bearing failure, and wastegate leaks**, leading to **blue smoke, loss of power, or complete turbo failure**.

- **Oil leaks** from **valve cover gaskets, oil filter housing, or rear main seal** are common and can lead to **low oil pressure or engine damage**.

- **Solution**: Regular **turbo inspections, oil changes (every 5K 7K miles), and upgrades (e.g., **oil catch cans, reinforced turbos**) are necessary.

3. **Cooling System Failures**

- **Faulty thermostats**

- **Leaking radiator hoses**

- **Weak water pump** (common failure point)

- **Inadequate cooling capacity** (especially in stop-and-go traffic)

- **Solution**: Upgrading to a **high-flow radiator, electric water pump, and reinforced cooling system** is often required.

4. **Transmission Issues (Especially in Early Models)**

- The **ZF 8HP automatic (in 7 Series) and 8AT (in X5/X6)** can be **fussy with shifting**, especially if not properly maintained.

- **Slipping gears**

- **Delayed engagement**

- **Fluid degradation** (must be changed every **60K 80K miles**)

- **Solution**: **Transmission fluid flush and proper servicing** are critical.

5. **Electrical and Software Quirks**

- Early N63 models (2009 2012) had **software glitches** affecting **turbo control, fueling, and emissions**.

- **iDrive lag** and **infotainment issues** are common in older 7 Series models.

- **Solution**: **ECU tuning (e.g., **MHD, JB4**) can improve reliability and performance.

6. **High Maintenance Costs**

- The N63 is **not a set-and-forget engine**. Regular **turbo inspections, oil changes, cooling system checks, and potential cylinder head work** add up.

- **Labor costs** in BMW specialty shops can be **expensive**, especially for cylinder head repairs.

7. **Depreciation and Market Demand**

- While the N63 is a **fan favorite**, it s **not as desirable as newer BMW engines** (e.g., B58, S58) or **M models**.

- **Buyers often prefer newer, more reliable BMWs**, meaning resale value may not recover fully after major repairs.

---

### **Ending Conclusion**

The **engine is otherwise healthy** (no major turbo, rod bearing, or block damage).

You are **prepared for the potential cylinder head repair** ( $3K $6K).

You **plan to maintain it properly** (oil changes, cooling system upgrades, turbo monitoring).

You **enjoy tuning and working on a project car**.

However, if you **prioritize reliability over performance** or **don t want to deal with high maintenance costs**, this engine may not be the best choice. The **N63 is a fantastic performer when cared for, but it demands attention** especially in the **right-side cylinder head area**.

---

### **Recommendation**

- **Get a full pre-purchase inspection** from a **BMW N63 specialist** (not just a generic mechanic).

- **Cylinder head warping/cracks** (ultrasonic testing recommended).

- **Turbo condition** (look for oil leaks, wastegate leaks, or blue smoke).

- **Cooling system integrity** (radiator, hoses, water pump, thermostat).

- **Transmission fluid condition** (should be fresh, not burnt).

- **Right-side cylinder head rebuild/replacement** ( $3K $6K).

- **Turbo upgrades** (if needed, e.g., **Garrett GTX3080R or HKS turbos**).

- **Cooling system refresh** (radiator, hoses, electric water pump).

- **Consider a lower-mileage example** (under **80K miles**) if possible, as major wear-in issues are less likely.

- **Be transparent about the cylinder head issue** buyers will appreciate honesty.

- **Get a quote for repairs** and **factor that into the asking price**.

- **Highlight the car s strengths** (V8 sound, luxury, tuning potential) to attract the right buyer.

- A **used N63 with a known-good cylinder head** (check forums like **BMW N63 Club**).

- A **newer BMW with a B58/B68 engine** (more reliable, better tech).

- A **used M550i (with N63 but often better built)** or **M760i (if budget allows)**.

The **N63 is a fantastic engine for the right buyer** someone who **enjoys working on their car, tuning, and maintaining a high-performance luxury vehicle**. However, the **right-side cylinder head issue is a significant drawback** that must be addressed. If you re **willing to invest in repairs and maintenance**, this can be a **great project**. If you **prefer a more hands-off experience**, look elsewhere.

Would you like help finding specific resources (mechanics, forums, or tuning shops) for N63 support?

Details:

DONOR VEHICLE: 2012 BMW 550i Engine: 4.4L V8 N63 Automatic Transmission Exterior Color: Black Interior. 09-14 BMW 550 750 X5 X6 4.4L N63 RIGHT PASSENGER SIDE ENGINE CYLINDER HEAD OEM.

part #: 7573938 prices

• $174.99-$395.95

specifications cylinderheapar:

• for models: X5, X6, 550, 750
• for makes: Bmw
• for years: 2009-2014
• mpn: 7573938
• type: Cylinder Head
• manufacturer warranty: 1 Month
• oe/oem part number: 7573938 /7 573 938 / 7-573-938, 7566279 / 7 566 279 / 7-566-279

shipping cylinderheapar:

• type: Fixed
• service: Standard
• class: Standard
• transit: 4-7 Days
• cost: $65.00

returns cylinderheapar:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller cylinderheapar:

• rating: 99.6%
• # reviews: 2108
• city: Wylie, Texas

general cylinderheapar:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

offer cylinderheapar:

• started: May 29, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1

payments cylinderheapar:

• wallet: Paypal
• credit card: Discover
• other

Bmw 7573938 Is Similar To:

• 11121268720 Bmw E21 M10 Cylinder (23.7% similar) Brand new, factory supplied E21 bare head no valves, cam or other fittings. Intake and exhaust studs are in good shape, some corrosion on a couple of. Fits 320 and should fit late cylinder head. Includes seats and guides. Because of the shelf wear I am listing it well below comparable retail...(May 22nd, 2017)
• 11121270360 Bmw Cylinder Head Cover (31.4% similar) ...(February 25th, 2019)
• 11121278702 Bmw Engine Motor Cylinder Head Top End (36.8% similar) Item as described and fast shipping. Great item, fast shipping, well recommended...(October 25th, 2018)
• Rebuilt Engine 1600-2 Head Bmw 1968 (29.8% similar) Since then never put it back. Due to age ,no warranty, no return, sold final...(April 22nd, 2015)
• 236.280 Elring For Bmw Cylinder Head Gasket Set (28.6% similar) With our engine parts you can schedule the repair when it convenient for. Development work at always focuses on the entire engine system. Cylinder-head gaskets chg have a crucial role to play in the advancement of engine technology, particularly with respect high-performance diesel engines and ...(September 1st, 2018)
• 30-027787-20 Goetze For Bmw Driver Side Cylinder Head Gasket (38.4% similar) Location: for 5-8 cylinders. Bead-on-stopper gaskets provide more uniform pressure distribution, reducing in bore distortion and sealing land space requirements over traditional bead next to stopper designs...(October 12th, 2018)
• 54681 Victor Reinz For Bmw Composite Cylinder Head Gasket 027067796301 (29.5% similar) Oem composite cylinder head gasket by victor rein. Increasing torque and performance with decreasing consumption emissions. As a leader in technology, an original equipment manufacturer transfers all of his expertise, experience and quality into the replacement parts business. Do recognize name on ...(August 16th, 2018)
• 601b Fits Bmw Cylinder Head Nut Set Microcar New (28.4% similar) New cylinder head nut set for bmw 600 and 700 automobiles...(September 15th, 2018)
• 781c Bmw Isetta Cylinder Head Nut Set (35.8% similar) ...(September 28th, 2018)
• Hs4839w Victor Reinz For Bmw Cylinder Head Gasket Set 725975438237 (25% similar) Do recognize name on box. How know re getting best price. Won't those concerns with replacement. With a broad product palette, victor rein supplies cylinder head gaskets for all conventional passenger car and commercial vehicle engines. The development goals in engine construction determine ...(August 18th, 2018)
• Hs54731a Victor Reinz For Bmw Cylinder Head Gasket Set 027067840721 (24.8% similar) As a leader in technology, an original equipment manufacturer transfers all of his expertise, experience and quality into the replacement parts business. It carries everything from gaskets and seals to repair oil leaks, engine control system sensors make that dash light go out, parts like camshafts ...(August 19th, 2018)