BMW 7588755 Torque Converter N63 6HP 93.7K F01 F02

( Manufacturer Part Number: 7588755 ), ( Part Type: Torque Converter ), ( Oe Brand: Sachs, Zf ), ( Full Part Number: 24407588755 ), ( Oe Part Numbers: 4168026716, 4168026710, 4168026681 ), ( Other Numbers: D126 ), ( Other Names: Transmission Torque Converter, 6hp Torque Converter ), ( Interchangeable Part Numbers: 7591994, 7588127 ), ( Interchangeable Full Part Numbers: 24407591994, 24407588127 ), ( Bmw Chassis: F02, F01, E71 ), ( Manufacturer Part Number Revisions: 7588755-01, 7588755-02, 7588755-03, 7588755-04, 7588755-05, 7588755-06, 7588755-07, 7588755-08, 7588755-09, 7588755-10 )

Review BMW Oem Torque Converter N63 6hp F01 F02 fits 750I X6 E71 2008–2012

The **BMW N63 750i / 750Li (F01/F02) and X6 (E71) Torque Converter (Part Number: 7588755, OEM 08-12)** is a high-performance, precision-engineered component designed exclusively for the legendary **N63 twin-turbocharged V8 engine**, delivering unmatched torque response and seamless shifting dynamics. This torque converter is a critical link between the engine s raw power and the **ZF 8HP (93.7 kW) automatic transmission**, ensuring optimal fluid coupling, efficient power transfer, and a refined driving experience across the full spectrum of driving conditions. Built to exacting BMW specifications, the **7588755** incorporates a **stamped aluminum housing** with a **precision-machined turbine and impeller assembly**, engineered to withstand the extreme pressures and temperatures generated by the N63 s aggressive power delivery ranging from **450 to 600 horsepower** in tuned applications. The converter s **hydraulic lock-up clutch mechanism** is calibrated for near-instantaneous engagement, minimizing slippage and maximizing fuel efficiency while maintaining the signature **N63 s linear throttle response** and sport-tuned transmission behavior.

For the **F01 7-Series (2008 2015) and F02 7-Series (2015 2017)**, as well as the **E71 X6 (2008 2015)**, this torque converter is a direct OEM replacement, ensuring compatibility with the **ZF 8HP 93.7kW transmission**, which is renowned for its smooth, progressive shifting and robust durability. The **stator design** is optimized for both **low-end torque multiplication** critical for spirited launches and **high-speed efficiency**, reducing parasitic drag under cruising conditions. The **fluid coupling system** is engineered to handle the N63 s **boost pressures and exhaust backpressure**, preventing premature wear on the transmission s planetary gears and torque converter housing. Additionally, the **sealing system** incorporates **high-temperature elastomers** and **precision-machined gaskets** to prevent fluid leaks, a common issue in aftermarket conversions, ensuring long-term reliability even under aggressive driving scenarios.

Beyond its technical specifications, this torque converter is a **crucial component for maintaining the N63 s legendary performance character**. Whether in a **stock 750i (450 hp)**, a **tuned 750i (500 hp)**, or a **highly modified N63 (600 hp)**, the **7588755** provides the necessary **torque multiplication and lock-up stability** to prevent transmission hunting, jerking, or delayed engagement common pitfalls in aftermarket conversions. The **impeller and turbine blades** are dynamically balanced to minimize vibration, contributing to the **refined ride quality** that BMW drivers expect from their luxury vehicles. For enthusiasts seeking to **restore stock performance** or **enhance a modified N63 setup**, this torque converter is an **essential OEM-grade replacement**, ensuring that the transmission operates at peak efficiency while preserving the **sporty, responsive feel** that defines the N63 s driving experience.

In summary, the **BMW 7588755 Torque Converter (N63, 750i/X6, 08-12)** is more than just a fluid coupling device it is a **precision-crafted component** that bridges the gap between the N63 s brute force and the **ZF 8HP s sophisticated shifting logic**, delivering **superior torque response, durability, and driving enjoyment**. Whether installed in a **restomod project, a high-performance build, or as a direct replacement for a failing OEM unit**, this torque converter ensures that the **N63 s power is harnessed with precision**, allowing drivers to experience the full potential of BMW s most iconic V8 engine.

### **Pros and Cons of Buying a 2008 2012 BMW 758i (N63 750i X6, F01/F02, E71) with a Torque Converter Issue (HP: 93.7k, 6HP93.7k)**

#### **Pros**

1. **Performance and Power**

- The N63 engine (750i) is one of BMW s most powerful V8s of its era, producing **600 horsepower** in the right setup. With proper tuning, it can exceed **700 800 HP**, making it a track or high-speed capable machine.

- The **6HP93.7k torque converter** (a high-performance variant) is designed for high-RPM applications, improving throttle response and reducing lag compared to stock converters.

- The **F01/F02 chassis** (7 Series) offers a refined, luxury-oriented driving experience with excellent handling for its size, especially in the **X6 (F02)** variant, which provides AWD capability.

2. **Luxury and Comfort**

- The **E71 (X6) and F01/F02 (7 Series)** are among the most luxurious BMWs of their time, with premium interiors, advanced infotainment (if updated), and high-end materials.

- The **X6 (F02)** adds off-road capability and a more aggressive stance, appealing to those who want both luxury and capability.

- The **750i** comes with **iDrive (if updated to newer software)**, adaptive cruise control, and advanced driver aids (though some systems may be outdated).

3. **Potential for High Modifications**

- The N63 platform is **extremely tuner-friendly**, with aftermarket support for **forced induction (turbo/blow-off), direct port injection (DPI), and high-flow exhausts**.

- The **6HP93.7k converter** suggests the owner (or previous tuner) has already taken steps toward performance, which could mean a **prepped engine bay** for further modifications.

- The **F01/F02** chassis can handle **suspension upgrades (coilovers, lowering springs), wider wheels, and track-oriented mods** without major structural concerns.

4. **Resale Value (If Well-Maintained)**

- While not as high as a **M760i or S760i**, a **well-documented, low-mileage 750i/X6** with a **modified torque converter** can still hold value among enthusiasts.

- The **X6 (F02)** is rarer than the sedan, which may make it more desirable in certain markets.

5. **Track and High-Speed Potential**

- With the right mods (turbo upgrades, ECU tuning, suspension), this car can be **competitive on the track** or for high-speed cruising.

- The **N63 s twin-turbo setup** allows for **high-revving power delivery**, making it enjoyable for spirited driving.

---

#### **Cons**

1. **Torque Converter Issues (Primary Concern)**

- The **6HP93.7k torque converter** is a **high-performance variant**, often used in **tuned or track cars**. If the original owner was pushing the engine hard, the converter may be **worn, slipping, or failing**, leading to:

- **Poor throttle response** (especially under load).

- **Transmission shudder or hesitation** (common in high-RPM applications).

- **Potential for clutch failure**, requiring a **full transmission rebuild or converter replacement** (costly, often **$2,000 $4,000 **).

- **Diagnosis is critical** if the issue is **internal transmission damage** (e.g., worn clutch, valve body problems), the repair bill could be **prohibitive**.

2. **N63 Engine Reliability Concerns**

- The **N63 is known for oil consumption, turbocharger failures, and carbon buildup** if not properly maintained.

- **Oil leaks** (valve cover gasket, oil filter housing gasket) are common and can lead to **catastrophic engine failure** if ignored.

- **Carbon buildup** (due to direct injection) can cause **misfires and rough idle**, requiring **port cleaning** ( $1,000 $1,500).

- **Turbocharger failures** (especially on high-mileage examples) can be **expensive to replace** ( $3,000 $5,000 per turbo).

3. **Transmission and Drivetrain Weaknesses**

- The **ZF 8HP/6HP transmissions** in these cars are **notoriously fragile** under heavy tuning.

- **Slipping clutches, solenoid failures, and valve body issues** are common, often requiring **full rebuilds** (not a DIY-friendly repair).

- The **X6 (F02) AWD system** can be **complex and expensive to repair** if a driveshaft or differential fails.

4. **High Maintenance Costs**

- **BMW luxury cars are expensive to maintain**, with **premium parts, specialized labor, and frequent service intervals** (e.g., **valve adjustment every 60k 100k miles**).

- **Oil changes must be done properly** (BMW recommends **full synthetic, high-quality oil**) to prevent sludge and turbo damage.

- **Brake systems** (especially on the X6) can be **costly to upgrade** for track use.

5. **Electrical and Software Issues**

- **iDrive glitches, sensor failures, and wiring problems** are common in older BMWs.

- **Adaptive cruise control and advanced driver aids** may require **software updates or ECU reprogramming** to function properly.

- **Infotainment lag** (especially in F01 models) can be frustrating.

6. **Depreciation and Market Demand**

- While **tuned N63s hold value among enthusiasts**, the **general market for high-mileage luxury BMWs is soft**.

- **X6s (F02) are less common than sedans**, which may limit resale options.

- **Insurance costs** can be **high** due to the car s value and performance potential.

7. **Weight and Fuel Economy**

- The **750i/X6 is heavy** ( 5,000 lbs), which **reduces handling responsiveness** and **increases fuel consumption**.

- **Fuel economy is poor** ( 12 15 MPG combined), making long-distance driving expensive.

- **High-performance mods (turbo upgrades, DPI) will further reduce efficiency**.

8. **Potential for Hidden Problems**

- **Rust** (especially in older F01 models) can be an issue in certain climates.

- **Suspension wear** (struts, bushings) is common on high-mileage examples.

- **Exhaust leaks** (from high-RPM driving) can lead to **cat back failures** ( $1,500 $2,500 to replace).

---

### **Conclusion & Recommendation**

#### **Who Should Buy This Car?**

- **Enthusiasts who want a high-performance, modifiable luxury BMW** and are **willing to invest in repairs**.

- **Those with mechanical experience** who can **diagnose and address transmission/converter issues** before committing.

- **Owners who prioritize track/daily-driver potential** over pure reliability.

- **Buyers who can afford the **high maintenance costs** of a tuned N63 and are prepared for **potential $5,000 $15,000 in repairs** in the next few years.

#### **Who Should Avoid This Car?**

- **Those seeking a reliable, low-maintenance luxury car** (consider a **M550i, 740i, or even a used M760i** instead).

- **Buyers who cannot afford transmission/converter repairs** (this is a **major red flag**).

- **Those who want a plug-and-play performance car** (the N63 requires **constant attention**).

- **People who dislike high insurance costs or poor fuel economy**.

#### **Final Recommendation**

If you **inspect the transmission thoroughly** (preferably with a **BMW transmission specialist**) and confirm that the **6HP93.7k converter issue is isolated** (not part of a larger transmission failure), this could be a **great project car** for someone who:

- **Wants a high-revving, modifiable V8 luxury car**.

- **Has the budget for potential transmission/engine repairs**.

- **Is willing to invest in maintenance** (oil changes, turbo care, suspension upgrades).

**If the transmission is already damaged**, **walk away** the repair costs will likely **outweigh the car s value**.

- **Used M760i (F01/F02)** More reliable, better tech, still powerful.

- **750i with stock transmission** Cheaper to maintain, but less mod potential.

- **X6 M50d (F13)**

Details:

Number visible from outside. To ensure compatibility, locate your vehicle in the tables below. Removed from a running and driving 2012 750Ix. Please review the high-resolution photos carefully.

Known issues inherent to this torque converter may not be covered. See warranty details below for coverage after installation. BMW 7 Series: Sedan - F01: Year: model: Eng: Type: Build Dates: 2010 12 750I drive N63 KC63 All, 2009 12 KA83 All. This torque converter has been inspected and tested by a certified technician.

BMW X6: SUV - E71: Year: model: Eng: Type: Build Dates: 2008 11 X6 50iX N63 FG83 Up to 04/ 2010. Item Details: Excellent. Body style: Lima. Pay close attention to the 'BUILD DATES' column - if it doesn't say 'All,' confirm that your vehicles build date falls within specified range.

Transmission: Auto. Sedan - F02: Year: model: Eng: Type: Build Dates: 2010 12 750Li drive N63 KC83 All, 2009 12 KB83 All.

part #: 7588755 prices

• $162.25-$199.99

specifications torquconv:

• for models: 750i, X6, E71
• for makes: Bmw
• for years: 2008-2012
• mpn: 7588755
• part type: Torque Converter
• oe brand: Sachs, Zf
• full part number: 24407588755
• oe part numbers: 4168026716, 4168026710, 4168026681
• other numbers: D126
• other names: Transmission Torque Converter, 6hp Torque Converter
• interchangeable part numbers: 7591994, 7588127
• interchangeable full part numbers: 24407591994, 24407588127
• bmw chassis: F02, F01, E71
• manufacturer part number revisions: 7588755-01, 7588755-02, 7588755-03, 7588755-04, 7588755-05, 7588755-06, 7588755-07, 7588755-08, 7588755-09, 7588755-10

seller torquconv:

• city: Springville, Utah
• # reviews: 1006
• rating: 99.6%

payments torquconv:

• other
• credit card: Discover
• wallet: Google-pay

general torquconv:

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

returns torquconv:

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

offer torquconv:

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

shipping torquconv:

• class: Standard
• type: Fixed
• cost: $39.95
• transit: 3-8 Days
• service: Standard

Bmw 7588755 Is Similar To:

• 18307505321 Bmw 740 540 Cat Converter (33% similar) For drivers side only will fit 540 and 740 engines. Up for sale is a used converter with 130K miles bmw v8 M62 engine genuine no issues...(February 15th, 2017)
• 209302 Bmw Torque Converter (40.4% similar) ...(June 18th, 2018)
• 24-40-1-421-429 Bmw Genuine Torque Converter (37.9% similar) ...(November 15th, 2018)
• 24001219745 Bmw Oem E32 V12 (24.2% similar) Came off a 750IL with 160K. Car was running and driving transmission worked as it should. This will fit any bmw on the list below, details for exact years. Oem bmw M70 V12 automatic transmission in great working condition...(March 30th, 2017)
• 24008632218 Bmw Auto Trans Torque (22.9% similar) ...(July 26th, 2017)
• 24157647836 Bmw Oem Transmission Active Hybrid Drive Torque Converter Stator (33.8% similar) Expedited shipping is often available in rush situations, please for rates before purchasing. Guaranteed 100 functional. Bmw oem GA8P70H transmission active hybrid drive torque converter stater F30 F10 part condition id 14871GENUINE oem, tested - removed from a low mileage 2013 535I...(November 13th, 2018)
• 24231217222 Bmw Zf Automatic Transmission Torque Converter Oem (35.8% similar) This came from a running and driving 1990 535I showing 191,800 miles. C bumper, inc. The transmission was tested extensively prior to car being dismantled including 60 miles of driving in all conditions, it functioned normally. This is a c7 code torque converter. Torque converter this is a used ...(November 7th, 2018)
• 24239880 7596066 80457 Unbranded Torque Converter Bmw Si (40.6% similar) Part: 24239880 prices...(April 12th, 2019)
• 24347544922 Bmw Auto Trans Torque (22.9% similar) ...(May 12th, 2017)
• 24401423243 Bmw Torque Converter For Automatic Transmission Oem (35.6% similar) Rarely, large or difficult to package items will take a day two longer. When fitment information includes a this means part will only fit some of cars within given model year, depending on car was manufactured. Or if we say the part fits it will fit 1999 model year vehicles and up to including ...(April 24th, 2019)
• 24401423393 Bmw Oem 97-00 Z3 (26% similar) Est, Mon to Fri...(May 15th, 2017)