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  3. BMW US ADDITIONAL 431.BM3122

BMW US ADDITIONAL 431.BM3122 Alpina Gran Rear Drive Shaft 4.4L

fits model: B8, G16, Awd. make: Bmw. year: 2022.

431.bm3122 Bmw - Us Additional 22 Alpina B8 Gran Coupe G16 4.4l Awd Rear Drive Shaft

( Brand: Bmw Us Additional ), ( Part Type: Driveshaft ), ( Conditions Options: 4.4, At, Awd ), ( Genuine Oem: Yes ), ( Ipn: 431.bm3122 ), ( Placement On Vehicle: Rear )

Review BMW US ADDITIONAL Alpina Gran Coupe 4.4l Rear Drive Shaft fits B8 G16 AWD 2022

The **BMW 431 (BM3122) Alpina B8 Gran G16 4.4L AWD Rear Drive Shaft** represents the pinnacle of engineering refinement and performance within BMW s legendary 4 Series lineup, meticulously crafted by Alpina a brand synonymous with precision tuning, aerodynamic mastery, and uncompromising luxury. This rear drive shaft, a critical component of the vehicle s advanced all-wheel-drive (AWD) system, is designed to deliver seamless power distribution between the front and rear axles while maintaining the sporty, rear-wheel-drive bias that defines the 4 Series dynamic character. Engineered from high-grade, heat-treated steel with a robust, multi-layered construction, the shaft is optimized for both durability and efficiency, ensuring it can withstand the immense torque generated by the **4.4-liter twin-turbocharged inline-six engine** a powerplant that produces a staggering **503 horsepower and 479 lb-ft of torque**, propelling the G16 from 0-60 mph in just **3.9 seconds** and capping out at an electrifying **181 mph**. The AWD system, featuring BMW s **xDrive** technology, dynamically adjusts power delivery to the rear wheels while maintaining the rear-drive shaft s structural integrity, allowing for a near-perfect balance of traction, responsiveness, and handling precision.

Beyond its mechanical prowess, this drive shaft embodies Alpina s signature attention to detail, with aerodynamic enhancements that reduce drag and improve downforce. The G16 s aggressive front splitter, rear diffuser, and active aero systems work in tandem with the drive shaft s alignment to enhance stability at high speeds, ensuring the vehicle remains planted and composed even when pushed to its limits. The shaft itself is integrated into a sophisticated drivetrain architecture that minimizes weight while maximizing rigidity, contributing to the G16 s razor-sharp steering feel and near-perfect weight distribution an impressive **52:48 front-to-rear bias** that enhances both agility and straight-line performance. Whether navigating tight corners at the N rburgring or cruising effortlessly on a winding mountain road, this drive shaft ensures that every ounce of power from the Alpina-tuned engine is transmitted with surgical precision, reinforcing the G16 s reputation as one of the most exhilarating and well-rounded grand tourers ever produced.

For enthusiasts and collectors alike, this rear drive shaft is not merely a functional component but a testament to BMW and Alpina s relentless pursuit of automotive excellence. Its construction reflects the same engineering philosophy that underpins the entire G16 platform where cutting-edge technology, handcrafted luxury, and raw performance converge. Whether in a showroom setting or on a track, the drive shaft s role in delivering the G16 s unmatched blend of comfort, speed, and control makes it an indispensable part of this automotive masterpiece.

### **Pros and Cons of Buying a BMW 431 (BM3122 Alpina B8 Gran G16, 4.4L AWD, Rear Drive Shaft)**

#### **Pros**

**1. Performance and Driving Dynamics**

The BMW 431, particularly the Alpina B8 Gran G16 variant, is a high-performance sedan with a naturally aspirated 4.4L inline-six engine producing around **500 horsepower** (depending on tuning). The AWD system ensures balanced power delivery, making it capable of aggressive cornering and quick acceleration. The rear-drive shaft setup (common in Alpina models) enhances rear-wheel bias, improving handling precision.

**2. Luxury and Interior Quality**

BMW s 4 Series has always been known for its premium interior, and the Alpina B8 Gran takes it further with high-end materials, ergonomic seating, and advanced infotainment (iDrive 7 or later). The cabin is spacious, well-appointed, and designed for both comfort and performance.

**3. Reliability of the 4.4L N63 Engine**

The N63 engine (used in the 431/Alpina B8) is a robust, naturally aspirated inline-six that, when properly maintained, can last well over **200,000 miles**. Unlike turbocharged BMW engines, it is less prone to carbon buildup and turbo failures, though it does require high-quality fuel and regular oil changes.

**4. AWD Capability**

The AWD system (xDrive) provides better traction in slippery conditions and enhances stability at high speeds. This is particularly useful for drivers who frequently encounter wet or icy roads.

**5. Resale Value and Brand Prestige**

BMW, especially Alpina models, retains strong resale value. The 431/Alpina B8 is a sought-after performance sedan, meaning it holds its value better than many competitors.

**6. Customization Potential**

The 4.4L engine is popular among tuners, allowing for aftermarket upgrades (intake, exhaust, ECU tuning) to further increase power. The Alpina B8 s rear-drive shaft setup also makes it a favorite for drift and performance modifications.

**7. Comfort and Practicality**

Despite its sporty nature, the 431/Alpina B8 offers a comfortable ride with well-tuned suspension. The rear-drive shaft setup (unlike full AWD) can sometimes feel more planted than a traditional AWD setup, depending on driving style.

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#### **Cons**

**1. High Maintenance Costs**

BMW vehicles, especially high-performance ones, require expensive parts and specialized labor. The N63 engine, while reliable, still demands high-quality oil, filters, and occasional upgrades (e.g., upgraded fuel pump, injectors).

**2. Fuel Consumption**

The 4.4L engine is thirsty, consuming around **12-15L/100km (20-23 MPG)** in mixed driving. This makes it more expensive to run than smaller, turbocharged engines.

**3. Weight and Handling Trade-offs**

The 431/Alpina B8 is a heavy car (around **1,700-1,800 kg**), which can make it less nimble than lighter sports sedans. While the rear-drive shaft setup improves rear-wheel bias, it doesn t fully compensate for the weight.

**4. Depreciation Over Time**

While BMWs hold value well, luxury performance cars still depreciate significantly over time. If you plan to keep it long-term, this may not be a major issue, but if you re looking for a short-term purchase, resale value may not fully offset the initial cost.

**5. Noise and Vibration**

The N63 engine can be loud at higher RPMs, and some drivers report noticeable vibration through the shifter and pedals. Proper suspension tuning can mitigate this, but it s something to consider.

**6. Limited Practicality for Daily Use**

The 431/Alpina B8 is a performance-oriented car, meaning it may not be the most practical for long commutes or family use. The rear-drive shaft setup (while beneficial for performance) can make it less forgiving on rough roads compared to full AWD.

**7. Potential for Electrical Gremlins**

BMW s complex electronics (infotainment, driver aids) can sometimes be finicky. Software updates may be required, and some features (like adaptive cruise control) can be inconsistent.

**8. Tuning Risks**

While the N63 engine is tuner-friendly, aggressive modifications can void warranties and risk engine damage if not done properly. Over-tuning can lead to premature wear on components like the fuel system or transmission.

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### **Conclusion and Recommendation**

The **BMW 431 (Alpina B8 Gran G16, 4.4L AWD, rear-drive shaft)** is an exceptional choice for drivers who prioritize **performance, luxury, and driving enjoyment** over practicality and fuel efficiency. It offers a **balanced mix of power, handling, and refinement**, making it ideal for enthusiasts who want a high-performance sedan without the compromises of a full AWD system.

**Best for:**

- Enthusiasts who want a **naturally aspirated, high-revving inline-six** with strong aftermarket support.

- Drivers who value **luxury, precision handling, and AWD capability** without the bulk of a full-time AWD system.

- Those who can afford **higher maintenance costs** and don t mind **higher fuel consumption**.

- Buyers who plan to **keep the car long-term**, benefiting from its strong resale value.

**Not ideal for:**

- Those seeking **maximum practicality** (long commutes, family use).

- Drivers who prefer **turbocharged engines** (less complex, better fuel economy).

- Budget-conscious buyers, as **running costs and maintenance will be higher** than average.

- Those who dislike **high-revving engines** or prefer quieter, more refined power delivery.

**Final Recommendation:**

If you can afford the **higher cost of ownership** and want a **luxurious, high-performance sedan** with **AWD and rear-drive shaft advantages**, the **BMW 431 (Alpina B8 Gran G16)** is an outstanding choice. Ensure the car has **proper maintenance records**, especially for the **N63 engine and AWD system**, before purchasing. If you re willing to invest in its care, it will reward you with **years of exhilarating driving experiences**.

Details:

No expedited shipping is available.

specifications universajoin:

  • for models: B8, G16, Awd
  • for makes: Bmw
  • for years: 2022
  • brand: Bmw Us Additional
  • part type: Driveshaft
  • conditions options: 4.4, At, Awd
  • genuine oem: Yes
  • ipn: 431.bm3122
  • placement on vehicle: Rear

general universajoin:

  • condition: Used
  • Transmission Drivetrain > Driveshafts Parts > Additional Driveshaft Parts

offer universajoin:

  • started: April 23, 2026
  • availability: In Stock
  • best offers: True
  • quantity: 1
  • sold: 0
  • options: Ship-to-home

shipping universajoin:

  • service: UPS Ground
  • carrier: UPS
  • class: Standard
  • type: Calculated
  • transit: 2-6 Days
  • cost: $138.62

returns universajoin:

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

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seller universajoin:

  • # reviews: 61992
  • city: Richland, Mississippi
  • rating: 99.9%
for models: b8, g16, awd, for makes: bmw, for years: 2022, part type: driveshaft, conditions options: 4.4, at, awd, genuine oem: yes, placement on vehicle: rear,
manufacturer: bmw, category: auto parts > transmission drivetrain > driveshafts parts > additional driveshaft parts, sku: 15366969001723861,
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1 offer $170.00 USD
  • Used. Offer #1 priced at $170.00 + $138.62 shipping estimate = $308.62* total. 4.4,AT,AWD.+$138.62 shipping

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