BMW 206507 Automatic Transmission Torque Converter 4.4L 133K 5078

( Manufacturer Part Number: 206507 ), ( Part Type: Torque Transmission Converter ), ( Manufacturer Warranty: 1 Month ), ( Vintage Part: No ), ( Country Of Origin: Germany )

Review BMW Oem 4.4l Automatic Transmission Torque Converter 133k fits 745LI 2002–2006

The **BMW 206507 02-06 745Li 4.4L Automatic Transmission Torque Converter (Part Number 5078)** is a high-performance, factory-specification component designed exclusively for BMW s iconic **745Li** models produced between **2002 and 2006**. Engineered to match the precision and reliability of BMW s legendary **V8 4.4L Twin Turbo** powertrain, this torque converter is a critical link between the engine and the **ZF 5HP19 automatic transmission**, ensuring seamless power transfer while maintaining optimal efficiency and responsiveness. Crafted from durable materials, including high-grade steel and specialized friction linings, this torque converter is built to withstand the intense torque output of the **745Li s** powerful engine, delivering smooth shifts, reduced slippage, and enhanced acceleration without compromising durability. Whether restoring a classic luxury sedan or upgrading an existing transmission, this OEM-replacement part guarantees a perfect fit, identical to the original equipment specification, ensuring compatibility with the vehicle s hydraulic and electronic systems. Its robust construction and precision engineering make it an essential component for maintaining the performance and longevity of the **745Li s** legendary driving dynamics, providing enthusiasts and mechanics with a reliable solution for both performance restoration and everyday reliability.

### **Pros and Cons of Buying a BMW 745Li (2002-2006, 4.4L V8, Automatic with Torque Converter, Mileage 50,780)**

1. **Strong Engine and Performance** The 4.4L V8 (N62) is a robust powerplant capable of producing around **300-320 horsepower** and **300 lb-ft of torque**, delivering a smooth and engaging driving experience. The engine is known for its longevity when properly maintained.

2. **Luxury and Comfort** As a 7 Series, this model offers premium interior materials, excellent sound insulation, and a refined ride quality. The spacious cabin, heated/ventilated seats, and advanced climate control make it ideal for long-distance travel.

3. **Reliability (with Proper Maintenance)** The 4.4L V8 is less prone to catastrophic failure compared to earlier BMW engines (e.g., the M52/M54). However, it does require **regular oil changes (every 5,000-7,500 miles)** and attention to cooling system health to prevent long-term issues.

4. **Automatic Transmission (ZF 5HP24)** The **5-speed automatic with a torque converter** is smooth and durable if maintained. Unlike some older BMW automatics, this one does not suffer from severe fluid-related failures as commonly seen in the 5-speed ZF units in other models.

5. **Resale Value and Prestige** BMW 7 Series models hold their value well, and owning one carries prestige. The 745Li is particularly desirable among enthusiasts for its balance of power and luxury.

6. **Aftermarket Support** The 4.4L V8 has a strong aftermarket presence, with readily available parts for upgrades (e.g., exhaust, intake, suspension) and tuning options.

7. **Safety and Technology** Later models (2004-2006) feature **DSC (Dynamic Stability Control), adaptive cruise control, and advanced driver aids**, making it safer than earlier generations.

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- **Cooling system failures** (water pump, thermostat, hoses) The 4.4L V8 is sensitive to overheating.

- **Electrical gremlins** (glove box lights, infotainment glitches, sensor failures).

- **Suspension wear** (struts, bushings, and control arms degrade over time).

- **Transmission fluid changes** (though less critical than in some other BMW automatics, it should still be done every **60,000 miles**).

2. **Potential Cooling System Issues** The **oil cooler and water pump** are common failure points. If neglected, this can lead to **engine damage** from overheating.

- **Infotainment system crashes** (iDrive glitches).

- **Sensor malfunctions** (speed sensor, oxygen sensors).

- **Lighting issues** (headlights, interior lights flickering).

4. **Fuel Economy** The 4.4L V8 is **not fuel-efficient**, averaging around **15-18 MPG highway**. With rising fuel costs, this can be a significant drawback.

5. **Depreciation** While the 7 Series retains value, it does not appreciate like some high-demand classics. The **2002-2006 models are not as sought-after as later facelifts (2006 E65/E66)**.

- **Delayed shifts** (if fluid is old or contaminated).

- **Torque converter wear** (if fluid was never changed).

- **Solenoid failures** (less common but possible).

7. **Rust Concerns (If Not Maintained)** Older BMWs can develop **rust in wheel wells, undercarriage, and rocker panels**, especially in snowy or salted regions.

---

### **Key Considerations Before Purchase**

- **Oil changes** were done on time (synthetic oil recommended).

- **Cooling system** (water pump, hoses, thermostat) was serviced.

- **Transmission fluid** was changed (if not, expect to do it immediately).

- **Brake system** (pads, rotors, calipers) is in good condition.

- **Suspension** (struts, bushings, ball joints) has no excessive wear.

- **Engine compression** (to rule out internal damage).

- **Cooling system integrity** (leaks, pump health).

- **Transmission fluid condition** (burnt smell, dark color).

- **Electrical system** (no random failures).

- **Suspension and steering** (no excessive play).

3. **Budget for Upkeep** Expect **$1,500 $3,000/year** in maintenance (oil changes, cooling system, minor repairs). Major issues (e.g., engine rebuild, transmission replacement) can cost **$5,000 $10,000 **.

4. **Test Drive Focus Areas**

- **Acceleration & shifting** (smooth power delivery, no hesitation).

- **Braking** (no grinding or pulsation).

- **Steering & handling** (no excessive play or vibration).

- **Electrical components** (lights, infotainment, climate control).

5. **Alternative Options**

- If maintenance costs are a concern, consider a **used 740i (3.0L twin-turbo)** or a **later 745Li (2006 E65/E66)** with updated electronics.

- If you want a **more reliable luxury sedan**, a **Mercedes-Benz E55 AMG or Lexus LS 430** may be worth evaluating.

---

### **Final Conclusion & Recommendation**

The **2002-2006 BMW 745Li (4.4L V8, automatic)** is a **powerful, luxurious, and enjoyable** luxury sedan when **properly maintained**. It offers **strong performance, a refined ride, and a commanding presence**, making it ideal for those who prioritize **driving pleasure and prestige** over ultra-low maintenance costs.

However, it comes with **significant drawbacks**, particularly **high ownership costs, potential electrical and cooling system issues, and fuel inefficiency**. Buyers must be **prepared for regular servicing and potential repairs**, especially if the vehicle lacks a **complete service history**.

- You have **budgeted for ongoing maintenance** ($2,000 $4,000/year).

- You ve **verified the service history** (oil changes, cooling system, transmission fluid).

- You **pass a thorough pre-purchase inspection** (no major hidden issues).

- You **plan to keep it for at least 5 7 years** (long-term ownership justifies the investment).

- You **enjoy BMWs and are okay with their quirks** (electrical gremlins, higher repair costs).

- You **cannot afford unexpected repairs** (e.g., cooling system failure, transmission issues).

- You **prioritize fuel efficiency** (this is not a practical daily driver for long commutes).

- You **find a well-documented alternative** (e.g., a later 745Li, a Mercedes E55, or a Lexus LS).

- You **cannot commit to regular maintenance** (this car rewards diligent owners).

The **745Li is a fantastic choice for an enthusiast who wants a **luxurious, powerful BMW** and is willing to **invest in its upkeep**. However, it is **not a set-and-forget vehicle** it demands **attention and budgeting** to avoid costly failures. If you meet these conditions, it will **deliver years of driving satisfaction**. If not, consider a **more modern or lower-maintenance luxury alternative**.

Details:

About Item: Better to see something once than hear about it a thousand times. 6-Speed Automatic Transmission AT ; Rear Wheel Drive RWD. This item came From: 2004 BMW 745Li, Sedan 4-Dr. Mileage: 133,250 miles.

part #: 206507 prices

• $40.50-$80.10

specifications torquconv:

• for models: 745li
• for makes: Bmw
• for years: 2002-2006
• mpn: 206507
• part type: Torque Transmission Converter
• manufacturer warranty: 1 Month
• vintage part: No
• country of origin: Germany

seller torquconv:

• rating: 99.4%
• # reviews: 2972
• city: Euclid, Ohio

general torquconv:

• condition: Used
• Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters

payments torquconv:

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

returns torquconv:

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

offer torquconv:

• started: February 4, 2026
• quantity: 1
• best offers: True
• sold: 0
• availability: In Stock
• options: Ship-to-home

shipping torquconv:

• cost: $159.00
• class: Freight
• type: Fixed
• service: Flat Rate Freight

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