BMW 7591617 Engine Cylinder Head N52

( Manufacturer Part Number: 7591617 ), ( Type: Cylinder Head ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: 11127591617, 7591617 ), ( Material: Aluminum ), ( Vintage Part: No ), ( Country Of Origin: Germany )

Review BMW Oem N52 Engine Cylinder Head fits E82 E88 E90 E91 E92 E93 E60 X3 X5 Z4

The **BMW N52 engine cylinder head (part number 7591617)** is a critical component of the highly regarded inline-six powerplant found in a wide range of BMW models spanning the **E82, E88, E90, E91, E92, E93, and E60 platforms**, as well as the **X3 (E83), X5 (E53), and Z4 (E89)**. Engineered with precision and designed to deliver exceptional performance, durability, and efficiency, this cylinder head is a key element in the N52 s reputation for smooth operation and high-revving capability. The N52, BMW s first naturally aspirated inline-six engine to feature direct fuel injection, was introduced in 2004 and quickly became a favorite among enthusiasts for its balanced power delivery, responsive throttle, and adaptability to both street and track applications. The cylinder head itself is forged from high-grade aluminum alloy, ensuring optimal heat dissipation while maintaining structural integrity under high-stress conditions. Its design incorporates **four valves per cylinder (two intake and two exhaust)** arranged in a pent-roof configuration, which maximizes airflow efficiency and combustion efficiency, contributing to the engine s strong torque output and linear power curve. The head features **hydraulic valve lifters**, eliminating the need for regular valve adjustment, while the **intake and exhaust ports** are meticulously machined to optimize airflow dynamics, reducing pumping losses and improving overall efficiency. The N52 s cylinder head also incorporates **individual throttle bodies (ITBs)** in some applications, allowing for precise control over each cylinder s air intake, which enhances throttle response and contributes to the engine s signature smoothness. For models equipped with **Valvetronic** (variable intake valve lift), the head includes a sophisticated system that adjusts valve lift dynamically, further refining power delivery and fuel economy. The **exhaust camshaft** is often paired with a **variable valve timing system (VANOS)**, which fine-tunes valve timing for optimal performance across the engine s operating range, whether cruising at highway speeds or spirited driving. While the N52 is renowned for its reliability, the cylinder head like all high-performance components benefits from proper maintenance, including regular cooling system checks, valve cover gasket replacements, and timely inspections for signs of wear or carbon buildup. Whether used in stock form, modified for increased horsepower, or restored to like-new condition, this cylinder head remains a cornerstone of BMW s N52 engine family, embodying a blend of cutting-edge engineering and timeless driving dynamics. Its compatibility with a broad spectrum of BMW models ensures that it remains a sought-after part for both restoration projects and performance upgrades, catering to both purists and tuners alike.

### **Pros and Cons of Buying a BMW N52 Engine Cylinder Head (E82/E88/E90/E91/E92/E93/E60 X3/X5/Z4)**

The **N52** engine, introduced in 2004, was BMW s first inline-six with direct fuel injection and variable valve timing (Valvetronic). It powered a wide range of models, including the **E82/E88 Z4, E90/E91/E92/E93 3 Series, E60 5 Series, and X3/X5 (E83/E85)**. While it was a reliable engine for its time, its cylinder heads have specific strengths and weaknesses worth considering before purchasing.

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### **Pros of the N52 Cylinder Head**

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

- The N52 is a robust engine when kept up with regular maintenance, including oil changes (BMW recommends **5,000-mile intervals** for synthetic oil) and valve adjustments (every **60,000 100,000 miles**).

- Many units with **under 100,000 miles** run smoothly if the owner followed service schedules.

- The **N52B30 (3.0L)** and **N52B35 (3.5L)** variants are particularly durable, especially in **Z4 (E89/E85) and 5 Series (E60)** applications.

2. **Good Power-to-Weight Ratio**

- The **N52B30 (258 300 hp)** and **N52B35 (306 325 hp)** variants deliver strong performance, especially in **Z4 (SDrive30i/50i) and 535i** models.

- The **N52D30 (turbocharged 3.0L diesel, 204 231 hp)** is also a solid choice for fuel efficiency and torque.

3. **Direct Injection & Valvetronic Advantages**

- **Direct fuel injection** improves efficiency and power delivery compared to port injection.

- **Valvetronic** (variable intake valve lift) reduces pumping losses, improving fuel economy.

- The **double-VANOS (variable camshaft timing)** system helps optimize performance across the RPM range.

4. **Aftermarket Support & Modification Potential**

- The N52 has a **strong aftermarket presence**, with widely available parts for upgrades (e.g., **intake manifolds, exhaust, ECU tuning**).

- **Stage 1 3 tuning** is common, with power gains up to **400 hp** on the **N52B30** and **500 hp** on the **N52B35** with proper cooling and support.

- **Forced induction (turbo/supercharger)** is possible but requires careful engineering to avoid reliability issues.

5. **Common in Popular BMW Models**

- Found in **Z4 (E89/E85), 3 Series (E90/E91), 5 Series (E60), X3 (E83), and X5 (E85)**, making parts and labor more accessible.

- **Z4 (E89) and 535i (E60)** are particularly sought-after due to their balance of performance and practicality.

6. **Lower Cost Than Some Alternatives**

- Compared to **N63 (V8) or S54 (N54 s predecessor)**, the N52 is **cheaper to maintain and repair** in many cases.

- **Cylinder head replacement** is less expensive than some modern BMW engines, though labor costs can add up.

---

### **Cons of the N52 Cylinder Head**

1. **Valvetronic & Valve Train Issues**

- **Valvetronic (variable intake valve lift) can fail**, causing **rough idle, misfires, or complete loss of power**. Symptoms include **hesitation, check engine lights (P0010, P0011, P0012, P0013)**.

- **Valve springs and retainers** can wear out, leading to **valve float or valve train noise** (common around **100,000 150,000 miles**).

- **Valve adjustment** is **critical** skipping it leads to **valve-to-piston contact**, which can destroy the engine.

2. **Oil Consumption & Leaks**

- The **N52 is notorious for burning oil**, especially in **high-mileage examples**. Some units consume **1 quart per 1,000 miles** or more.

- **Valvetronic actuator leaks** (oil seeping into the intake manifold) are a common issue, requiring **replacement of the Valvetronic housing**.

- **PCV system failures** can cause **oil leaks and carbon buildup** in the intake.

3. **Carbon Buildup & Intake Restriction**

- **Direct injection** leads to **carbon deposits** on intake valves, restricting airflow and causing **rough idle, stalling, or loss of power**.

- **Intake manifold leaks** (especially around the **Valvetronic housing gasket**) are frequent, requiring **replacement of the intake manifold or gaskets**.

4. **Water Pump & Thermostat Failures**

- The **N52 s water pump** (integrated into the timing chain cover) often fails around **80,000 120,000 miles**, leading to **overheating**.

- **Thermostat failures** can cause **coolant temperature fluctuations**, stressing the engine.

5. **Timing Chain & Tensioner Wear**

- The **timing chain** is **not a wear item** in most cases, but **tensioners and guides** can wear, leading to **chain slapping or misalignment**.

- **Symptoms include rattling noises** (especially when cold) and **check engine lights (P0016, P0017)**.

6. **Head Gasket & Coolant Leaks**

- **Head gasket failures** (especially on **N52D30 diesel**) can cause **coolant mixing with oil**, leading to **white smoke, overheating, and catastrophic engine damage**.

- **Coolant leaks** from the **thermostat housing or water pump** are common and should be addressed promptly.

7. **Electrical & Sensor Issues**

- **Mass airflow sensor (MAF) failures** cause **rough idle, stalling, and poor acceleration**.

- **Knock sensors (P0001, P0002)** can fail, leading to **ECU misfires and power loss**.

- **Injector failures** (especially in **N52B30**) can cause **misfires and poor performance**.

8. **Turbocharger Problems (N52D30 Diesel)**

- The **N52D30 (turbo diesel)** has **turbocharger failures**, often due to **low oil pressure or poor maintenance**.

- **Wastegate leaks** and **turbo bearing wear** can lead to **loss of boost and engine damage**.

9. **High Maintenance Costs Over Time**

- While initially affordable, **N52 engines require frequent attention** (oil changes, valve adjustments, Valvetronic repairs, carbon cleaning).

- **Labor costs** for BMWs are high, and **specialty tools** (e.g., **valve spring compressor, Valvetronic tool**) are needed for some repairs.

10. **Depreciation & Parts Availability**

- **Newer BMW engines (N54, B58, S55)** are more modern and reliable, making **N52 parts less common** over time.

- **Discontinued models (E82/E88 Z4, E60 5 Series)** may have **limited aftermarket support** compared to newer platforms.

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### **Common Symptoms of N52 Cylinder Head Problems**

- **Rough idle or stalling** (Valvetronic, MAF, or carbon buildup)

- **Check engine lights** (P0010 P0013, P0016 P0017, P0100 P0104)

- **Oil consumption** (burning oil, blue smoke from exhaust)

- **Valvetronic actuator leaks** (oil dripping from intake manifold)

- **Knocking or rattling noises** (timing chain, valve train wear)

- **Overheating** (water pump, thermostat, head gasket failure)

- **Loss of power or hesitation** (carbon buildup, injectors, sensors)

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### **Conclusion & Recommendation**

**Enthusiasts who enjoy mechanical projects** and don t mind **regular maintenance**.

**Budget-conscious buyers** looking for a **powerful, mod-friendly BMW** without V8 complexity.

**Z4 (E89/E85) and 535i (E60) owners** who prioritize **driving dynamics** over long

Details:

1 SERIES N52 E82 / E88. Multiple quantity items may vary slightly depending on stock hand, but will always be the same quality or better than pictured. Fully tested in great working condition. OEM Genuine BMW N52 engine cylinder head.

Part fitment will vary due to several different factors: The vehicles build date month year. 3 SERIES N52 E90 / E91 E92 E93. Electric/Manual, Leather/Vinyl, Sport/Standard etc. Sedan, Convertible, Wagon or Coupe.

Manual or Automatic transmission Engine size. 2008 2013 BMW 128i Convertible E88 N52.

part #: 7591617 prices

• $449.99-$1411.00

specifications cylinderheapar:

• for models: E82, E88, E90, E91, E92, E93, E60, X3, X5, Z4
• for makes: Bmw
• mpn: 7591617
• type: Cylinder Head
• manufacturer warranty: 1 Month
• oe/oem part number: 11127591617, 7591617
• material: Aluminum
• vintage part: No
• country of origin: Germany

shipping cylinderheapar:

• type: Fixed
• service: FedEx Ground Economy
• transit: 2-5 Days
• cost: $200.00
• carrier: FedEx
• class: Economy

offer cylinderheapar:

• availability: In Stock
• best offers: True
• quantity: 1
• started: February 25, 2026
• options: Ship-to-home
• sold: 0

general cylinderheapar:

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

seller cylinderheapar:

• rating: 99.8%
• # reviews: 13567
• city: Athol, Idaho

returns cylinderheapar:

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

payments cylinderheapar:

• credit card: Mastercard
• wallet: Apple-pay
• other

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