BMW 110505 Harmonic Balancer Crankshaft Crank Pulley 3.0L

( Manufacturer Part Number: 110505 ), ( Part Type: Balancer Crankshaft Crank ), ( Manufacturer Warranty: 1 Month ), ( Oe/oem Part Number: 7573654, 7573654-05, 757365405, 7573654 05 ), ( Material: Cast Iron, Steel ), ( Vintage Part: No ), ( Finish: Matte ), ( Country Of Origin: Germany )

Review BMW 3.0l Harmonic Balancer Crankshaft Crank Pulley Oem fits X3 F25 AWD 2011–2017

The **BMW 110505 (2011 2017 F25 X3 3.0L AWD) Harmonic Balancer, Crankshaft Pulley, and Crankshaft Front Cover Gasket Set** is a precision-engineered component designed to maintain the structural integrity and smooth operation of the N55 inline-six engine, one of BMW s most advanced and performance-oriented powerplants of its era. This high-performance assembly combines a **heavy-duty harmonic balancer** with a **crankshaft pulley** and a **crankshaft front cover gasket**, ensuring optimal vibration damping, reliable power transfer, and long-term durability critical for both daily driving and spirited acceleration. The harmonic balancer, a critical stress-relief component, absorbs engine vibrations generated by the rotating crankshaft, preventing excessive wear on the engine mounts, drivetrain, and suspension while minimizing noise and harshness. Crafted from high-grade steel and reinforced with a robust rubber insert, it is engineered to withstand the torque demands of the 3.0L twin-turbocharged inline-six, which produces up to **300 horsepower and 300 lb-ft of torque** in its standard form, or even higher in performance-tuned variants. The accompanying **crankshaft pulley** serves as the direct interface between the harmonic balancer and the engine s accessory drive system, ensuring precise alignment and smooth operation of the serpentine belt and associated components, such as the alternator, power steering pump, and air conditioning compressor. Meanwhile, the **crankshaft front cover gasket** provides an airtight seal between the engine block and the harmonic balancer housing, preventing oil leaks and maintaining proper internal pressure essential for preventing contamination and ensuring optimal lubrication. This gasket set is designed to fit seamlessly with the **F25 X3 s N55 engine bay**, offering a complete solution for those seeking to restore or upgrade their vehicle s front-end drivetrain components after wear, damage, or routine maintenance. Whether addressing a leaking harmonic balancer, replacing a worn pulley, or performing a front-end service, this **OEM-quality or high-replica aftermarket assembly** delivers the reliability and performance expected from BMW s high-performance lineup, ensuring a smooth, vibration-free driving experience while protecting the engine s longevity.

### **Pros and Cons of Buying a 2011 2017 BMW X3 F25 (3.0L AWD) with a Harmonic Balancer, Crankshaft, or Crank Pulley Issue**

#### **Pros**

1. **Strong Engine and Performance**

The 3.0L inline-six (N57) in the F25 X3 is a capable engine, producing around 300 335 horsepower depending on the model year. It offers a smooth power delivery, especially in AWD configurations, making it suitable for both city driving and light off-road use.

2. **AWD Capability**

The AWD system provides better traction in slippery conditions, snow, or off-road scenarios, which can be a significant advantage depending on your climate or driving needs.

3. **BMW s Reputation for Driving Dynamics**

The X3 F25 is known for its well-balanced handling, responsive steering, and comfortable ride, making it a practical luxury SUV. The suspension tuning is generally well-executed for its class.

4. **Reliability of the N57 Engine (Compared to Others)**

While the N57 has its issues, it is generally more reliable than BMW s earlier twin-turbo inline-four engines (e.g., N52, N54) in terms of longevity and common failure points. Many owners report that with proper maintenance, it can last well beyond 150,000 miles.

5. **Aftermarket Support and Modifications**

The N57 platform has a strong aftermarket presence, with tuners like **MHD, JB4, and HP Tuners** offering software upgrades to improve performance and fuel efficiency. Additionally, parts like intake manifolds, exhaust systems, and suspension upgrades are widely available.

6. **Potential for Cost-Effective Repairs**

If the harmonic balancer, crankshaft, or crank pulley issue is isolated and not part of a larger engine failure (e.g., rod bearing wear, oil pump failure), the repair cost may be manageable, especially if the engine itself is in good condition. A harmonic balancer replacement typically costs **$500 $1,200**, while a crankshaft or pulley issue (if not severe) can sometimes be addressed with a pulley replacement or minor machining.

7. **Luxury and Comfort Features**

The X3 F25 comes with BMW s signature luxury amenities, including high-quality materials, heated/ventilated seats, advanced infotainment (if upgraded), and available features like adaptive cruise control and parking sensors.

8. **Resale Value (Compared to Competitors)**

While not as high as newer BMWs, the F25 still holds its value better than many competitors in the luxury SUV segment, especially when well-maintained.

---

#### **Cons**

1. **Harmonic Balancer, Crankshaft, or Crank Pulley Issues**

- **Harmonic Balancer:** The N57 s harmonic balancer is notorious for failing, often between **80,000 120,000 miles**. A failed balancer can cause **vibration, rattling, or even engine damage** if it shatters. Replacement is necessary but can be labor-intensive due to engine removal in some cases.

- **Crankshaft or Crank Pulley Problems:** While less common than the balancer, the crankshaft itself can develop **microscopic cracks or wear** over time, leading to oil leaks or even catastrophic failure if a bearing fails. The crank pulley (which drives the harmonic balancer) can also wear out, causing noise or imbalance.

- **Diagnosis Difficulty:** These issues can be hard to diagnose without a **comprehensive engine inspection**, including checking for **rod bearing wear, oil pump failure, or oil leaks** that contribute to the problem.

2. **High Maintenance Costs**

BMWs, especially luxury models, require **premium fuel, synthetic oil changes (every 5,000 7,500 miles), and expensive parts**. The N57 engine, while robust, has **turbochargers, intercoolers, and fuel injectors** that can fail and require costly replacements.

3. **Turbocharger and Cooling System Reliability**

- The N57 s **turbochargers** (especially the wastegates) can fail, leading to **loss of power, excessive smoke, or even engine damage** if the turbo seizes.

- The **intercooler and charge pipes** are prone to **leaks and cracks**, requiring frequent inspections.

- The **cooling system** (water pump, thermostat, hoses) is critical failures here can lead to **overheating and severe engine damage**.

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

- The **6-speed ZF automatic transmission** in the F25 has had **shift quality complaints** and occasional **failure modes**, particularly in high-mileage examples.

- Some owners report **rough shifting, delayed engagement, or complete transmission failure**, which can be expensive to repair (transmission replacement often costs **$4,000 $6,000**).

5. **Electrical and Infotainment Problems**

- Early F25 models (2011 2013) had **infotainment glitches**, including **iDrive lag, touchscreen failures, and Bluetooth issues**.

- **Electrical gremlins** (e.g., faulty sensors, wiring harness problems) are common in BMWs and can be frustrating to diagnose.

6. **Rust and Body Issues**

- The X3 F25 is prone to **rust in the wheel wells, rocker panels, and undercarriage**, especially in snowy or salted regions. A thorough inspection of these areas is **mandatory**.

- Some models have **poorly sealed seams**, leading to water intrusion and interior mold issues.

7. **Depreciation and Reliability Concerns**

- While the N57 is more reliable than earlier BMW engines, it is **not bulletproof**. Many owners report **expensive repairs** (e.g., turbocharger, oil pump, water pump) as the car ages.

- The **resale value drops sharply** after 100,000 miles, making it a less attractive long-term investment compared to more reliable luxury SUVs (e.g., Lexus RX, Audi Q5).

8. **Potential for Hidden Engine Damage**

- If the harmonic balancer or crank pulley has failed, there is a risk of **rod bearing wear, oil pump failure, or even a blown head gasket**. A **full engine inspection** (including compression test, oil analysis, and visual inspection of bearings) is **essential** before purchasing.

---

### **Ending Conclusion**

Buying a **2011 2017 BMW X3 F25 (3.0L AWD) with harmonic balancer, crankshaft, or crank pulley concerns** is a **high-risk, high-reward** decision. The car offers **strong performance, AWD capability, and luxury features**, but it comes with **significant mechanical risks**, particularly if the engine issues are not properly addressed.

- **If the car has had the harmonic balancer replaced recently** and the engine shows **no signs of wear** (clean oil, no leaks, smooth operation), it could be a **good value** for someone who plans to **keep it for a few years and perform maintenance proactively**.

- **If the issue is unresolved or the engine has been neglected**, the risk of **expensive repairs (or even a complete engine failure)** is too high to justify the purchase.

- **If you are buying used**, prioritize a **vehicle with a full service history, recent harmonic balancer replacement, and a pre-purchase inspection (PPI) by a BMW specialist**.

### **Recommendation**

- The seller provides **proof of harmonic balancer replacement** (preferably within the last 50,000 miles).

- The car has **no oil leaks, smooth power delivery, and passes a compression test**.

- You are **prepared to budget $2,000 $5,000 for potential repairs** (transmission, turbo, cooling system, etc.).

- You want **long-term reliability** look at a **Lexus RX 350, Audi Q5 3.0 TDI, or Porsche Cayenne (with proper maintenance)**.

- You prefer **lower maintenance costs** a **used Toyota Land Cruiser, Subaru Ascent, or Mazda CX-9** may be more practical.

- You are **not mechanically inclined** BMWs require **skilled attention**, and DIY repairs are often **not cost-effective**.

- **Get a pre-purchase inspection (PPI) from a BMW specialist** this should include **engine compression test, oil analysis, and inspection of the harmonic balancer, crankshaft, and pulley**.

- **Budget for the harmonic balancer replacement** (if not done) and **inspect for related issues** (oil leaks, turbo condition, cooling system).

- **Consider a short-term lease or rental** to test-drive the car before committing to a purchase.

- **Be prepared for higher maintenance costs** BMWs are **not cheap to own**, especially with the N57 engine.

**Final

Details:

2011 2017 BMW X3 3.0L AWD F25 HARMONIC BALANCER CRANKSHAFT CRANK PULLEY OEM condition: Good. Shipping: Free.

part #: 110505 price

• $67.76

specifications cranshafengin:

• for models: X3, F25, Awd
• for makes: Bmw
• for years: 2011-2017
• mpn: 110505
• part type: Balancer Crankshaft Crank
• manufacturer warranty: 1 Month
• oe/oem part number: 7573654, 7573654-05, 757365405, 7573654 05
• material: Cast Iron, Steel
• vintage part: No
• finish: Matte
• country of origin: Germany

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: Used

offer cranshafengin:

• availability: In Stock
• quantity: 1
• best offers: True
• options: Ship-to-home
• started: March 5, 2026
• sold: 0

payments cranshafengin:

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

seller cranshafengin:

• rating: 100.0%
• # reviews: 1379
• city: Philadelphia, Pennsylvania

shipping cranshafengin:

• carrier: UPS
• transit: 4-7 Days
• service: UPS Ground
• cost: $0.00
• class: Standard
• type: Calculated

returns cranshafengin:

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

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