BMW 25-0700-003-649 Auto Automatic Transmission Torque Converter

( Part Type: Torque Transmission Converter ), ( Ipn: 09-15 ), ( Manufacturer Warranty: 3 Months ), ( Output Shaft Diameter: Oem ), ( Vintage Part: No ), ( Country Of Origin: Germany ), ( UPC: 250700003649 )

Review BMW Auto Automatic Transmission Torque Converter Oem fits 740I 740LI 750I 750LI 2009–2015

The **BMW 09-15 740i/740li/750i/750li Automatic Transmission Torque Converter (Part Number: 25-0700-003-649)** is a high-performance, precision-engineered component designed exclusively for BMW s N63 and N74 twin-turbocharged inline-six engines, which power the iconic 7 Series models from the 2009 to 2015 model years. This torque converter is a critical link in the automatic transmission system, responsible for transferring engine torque to the transmission fluid, enabling seamless power delivery while optimizing efficiency and drivetrain performance. Crafted from durable, high-grade materials, including reinforced steel and specialized elastomers, this torque converter is built to withstand the intense heat, pressure, and torque demands of BMW s high-output turbocharged engines, which can generate upwards of 400 to 600 horsepower depending on the model and tuning level.

What sets this torque converter apart is its meticulous engineering tailored to BMW s **ZF 8HP automatic transmission**, ensuring flawless integration with the valve body, pump assembly, and stator, all of which work in harmony to provide smooth, responsive shifts and optimal torque multiplication. The design incorporates a **multi-disc clutch pack** with precision-machined friction surfaces, allowing for progressive engagement and disengagement of the engine s power, which is essential for maintaining both performance and longevity in high-stress driving conditions. Additionally, the torque converter features a **stator lockup mechanism**, which, when activated, eliminates slippage between the converter and the transmission, enhancing fuel efficiency and reducing heat buildup during steady-state driving.

For enthusiasts and mechanics seeking a direct-fit replacement or an upgrade for their 740i, 750i, or their luxury counterparts the 740li and 750li this torque converter is a standout choice due to its **OEM-level quality and compatibility**. It is engineered to match the exact specifications of BMW s original equipment, including the correct fluid flow dynamics and torque capacity, ensuring that the transmission operates with the same level of precision and reliability as the factory unit. Whether used in a stock application, a mild tune, or a high-performance setup, this torque converter delivers consistent performance, reducing the risk of slippage, overheating, or premature wear on the transmission components.

Beyond its technical superiority, this part is also a testament to BMW s commitment to engineering excellence, offering a seamless blend of luxury and performance. It is designed to complement the refined driving experience of the 7 Series, where effortless acceleration and buttery-smooth shifts are paramount. For those restoring or upgrading their vehicle, this torque converter is not just a functional replacement but a critical component that contributes to the overall driving dynamics, ensuring that every gear change feels as polished and deliberate as the rest of the vehicle s operation. Whether installed in a daily driver or a high-performance project, the **BMW 25-0700-003-649** torque converter is a reliable, high-quality solution that upholds the brand s reputation for engineering precision.

### **Pros and Cons of Buying a BMW 7 Series (2009 2015) with Automatic Transmission (740i, 740Li, 750i, 750Li, 09-15, Part Number 25-0700-003-649)**

#### **Overview**

The BMW 7 Series (E65/E66, 2009 2015) is a luxury sedan known for its refined interior, powerful performance, and strong resale value. The **25-0700-003-649** refers to the **N63 V8 engine s torque converter** (used in the **740i/740Li with the 4.4L V8** and **750i/750Li with the 4.8L V8**). This part is critical for smooth automatic transmission operation, and its condition can significantly impact drivability.

---

### **Pros of Owning a 2009 2015 BMW 7 Series (with Automatic Transmission)**

1. **Premium Luxury Experience**

- One of the most luxurious and well-equipped sedans in its class, with high-quality materials, advanced infotainment (iDrive 5 or 6), and premium sound systems.

- Spacious cabin with excellent seating comfort, especially for long drives.

2. **Strong Performance (V8 Models)**

- The **750i/750Li (4.8L V8)** produces **400 431 hp** (depending on model year) and **420 lb-ft of torque**, delivering smooth, linear power.

- The **740i/740Li (4.4L V8)** offers **335 369 hp** and **369 lb-ft of torque**, providing a balance of power and efficiency.

- Quick acceleration (0-60 mph in **4.8 5.5 seconds** for V8 models) and a top speed of **155 mph** (electronically limited).

3. **Reliability & Durability (Compared to Competitors)**

- The **N63 V8 engine** (used in 740i/750i) is robust, especially when maintained properly. With **regular oil changes (BMW Longlife-04 or equivalent)** and timely servicing, it can easily exceed **200,000 250,000 miles**.

- The **ZF 8HP automatic transmission** (paired with the torque converter) is durable if well-maintained. Many last **150,000 miles** without major issues.

- BMW s **N62 inline-6 (in 740d/750d models)** is also reliable but less powerful than the V8.

4. **High Resale Value**

- BMW 7 Series holds its value better than many luxury sedans, especially well-maintained examples.

- The **2012 2015 models** (facetel redesign) are particularly sought after.

5. **Advanced Safety & Technology**

- Standard features include **stability control, multiple airbags, lane departure warning, and adaptive cruise control** (in later models).

- **iDrive 6 (2012 )** offers a more intuitive infotainment system with better connectivity (Bluetooth, USB, optional navigation).

6. **Comfort & Ride Quality**

- **Air suspension (optional)** provides a smooth, adaptive ride.

- Quiet cabin with excellent sound insulation.

- Heated/ventilated seats (available in higher trims) enhance comfort.

7. **Aftermarket & Customization Options**

- Strong aftermarket support for performance upgrades (exhaust, suspension, tuning).

- BMW s **M Performance** and **M Sport** packages add sportiness without sacrificing luxury.

8. **Classic BMW Driving Dynamics**

- Precise steering, engaging handling (especially in **M Sport or Dynamic trims**), and a **smooth, engaging transmission shift** when well-maintained.

---

### **Cons of Owning a 2009 2015 BMW 7 Series (with Automatic Transmission)**

1. **High Maintenance Costs**

- BMWs are **notoriously expensive to maintain**, especially compared to German rivals like Mercedes or Audi.

- **Oil changes** should be done every **10,000 15,000 miles** (BMW Longlife-04 or equivalent) to prevent sludge buildup in the **N63 V8**.

- **Transmission fluid** (ZF 8HP) should be changed every **60,000 100,000 miles** to prevent wear on the **torque converter (25-0700-003-649)** and clutch packs.

- **Brake pads, rotors, and calipers** wear out faster than in most luxury cars due to aggressive braking systems.

2. **Common Engine & Transmission Issues**

- **Oil consumption** is a known issue some models burn **1 quart per 1,000 2,000 miles** if not maintained properly.

- **Carbon buildup** in intake valves (common in turbocharged engines) can reduce performance if not addressed.

- **Timing chain stretch** (less common than in older BMWs but still a risk if maintenance is neglected).

- The **ZF 8HP automatic** is generally reliable but can develop **slippage, rough shifts, or delayed engagement** if fluid is old or the converter is worn.

- **Torque converter failure** (common symptom: **hard shifting, overheating, or transmission slipping**) can be expensive to repair (**$1,500 $3,000 **).

- **Solenoid failures** in the transmission can cause erratic shifting.

3. **Electrical & Infotainment Glitches**

- **iDrive system** (especially **iDrive 5 in pre-2012 models**) can be **slow, unresponsive, or prone to freezing**.

- **Bluetooth connectivity issues**, **screen flickering**, and **software bugs** are common.

- **Window regulators, door locks, and power seats** may fail over time.

4. **Fuel Economy is Poor for a Luxury Sedan**

- **740i (4.4L V8):** 16 18 MPG city / 22 25 MPG highway.

- **750i (4.8L V8):** 14 16 MPG city / 20 22 MPG highway.

- **Diesel models (740d/750d)** are more efficient ( 20 25 MPG combined) but have their own reliability concerns (DPF, turbo issues).

5. **Depreciation & Insurance Costs**

- While the **7 Series holds value well**, it still depreciates faster than some premium brands.

- **Insurance premiums** are higher due to **high repair costs and theft risk** (BMWs are often targeted).

6. **Noise & Vibration Issues**

- Some models develop **wind noise** at highway speeds.

- **Road noise** can be intrusive in less expensive trims.

- **Engine mounts** may wear out, leading to **excessive vibration** (especially noticeable at idle).

7. **Resale Market Competition**

- **Mercedes S-Class, Audi A8, and Lexus LS** are strong competitors, sometimes offering better value.

- **Used luxury sedans** (especially **2012 models**) can be expensive to buy, reducing profit if sold later.

8. **Recall & Warranty Concerns**

- Some **2009 2012 models** had **recalls for transmission issues, airbag defects, and electrical faults**.

- **Extended warranties** (if available) can be costly but may be worth it for peace of mind.

---

### **Key Considerations Before Buying (Especially for the Torque Converter & Transmission)**

1. **Check Transmission & Torque Converter Health**

- **Hard or delayed shifts** (especially in cold starts).

- **Transmission slipping or jerking** under acceleration.

- **Overheating** (check transmission fluid color should be **pink/red**, not dark or burnt).

- **Whining or grinding noises** during engagement.

- **Transmission fluid flush** ( $200 $400) can extend life.

- **Torque converter replacement** ( $1,500 $3,000 installed) is needed if failing.

- **Transmission rebuild** ( $3,000 $5,000) may be required if the converter is part of a larger issue

Details:

As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. Shipping prices for ground apply only to the continental states of USA. This part may fit one or all of the described vehicles. All of the parts are tested either before or after removal from vehicle.

Please match part number to ensure fitment. Fitment and Compatibility.

part #: 250700003649 price

• $649.99

specifications torquconv:

• for models: 740i, 740li, 750i, 750li
• for makes: Bmw
• for years: 2009-2015
• part type: Torque Transmission Converter
• ipn: 09-15
• manufacturer warranty: 3 Months
• output shaft diameter: Oem
• vintage part: No
• country of origin: Germany
• upc: 250700003649

payments torquconv:

• wallet: Paypal
• other
• credit card: Discover

general torquconv:

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

shipping torquconv:

• type: Fixed
• class: Freight
• service: Flat Rate Freight
• cost: $100.00

returns torquconv:

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

seller torquconv:

• # reviews: 1008
• city: Yuba City, California
• rating: 99.9%

offer torquconv:

• sold: 0
• availability: In Stock
• started: February 16, 2026
• quantity: 1
• best offers: True
• options: Ship-to-home

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