BMW 2304100802 Automatic Transmission Driveshaft Drive Shaft 850I 850CI

( Manufacturer Part Number: 2304100802 ), ( Type: Driveshaft ), ( Manufacturer Warranty: 1 Month ), ( Transmission Type: Automatic ), ( Country Of Origin: Germany )

Review BMW 850ci Automatic Transmission Driveshaft Drive Shaft Oem fits E31 1991–1994

The **BMW 2304100802** is an essential high-performance driveshaft for the **E31 850i and 850Ci** models produced between **1991 and 1994**, designed to deliver the uncompromising power and precision expected from BMW s legendary luxury sedans. This driveshaft is a critical component of the **automatic transmission system**, ensuring seamless power transfer from the engine to the rear axle while maintaining optimal balance, durability, and performance. Crafted from high-grade materials, including robust steel and precision-machined components, this driveshaft is engineered to withstand the demanding torque output of the **M88 V12 engine** (in the case of the 850i) or the **M62 V8 engine** (for the 850Ci), delivering smooth, vibration-free operation even under heavy loads. Its **OEM-quality construction** ensures a perfect fit with the **Getrag GS6-37BLS automatic transmission**, eliminating any risk of misalignment or premature wear. The driveshaft features a **splined connection at both ends**, allowing for easy installation while maintaining rigidity, and is designed to accommodate the unique suspension geometry of the E31 platform, which includes **multi-link rear suspension and independent front strut design**. Whether restoring a classic BMW to its original glory or upgrading an existing system for enhanced reliability, this driveshaft is a **must-have replacement part** that restores factory-level performance and longevity. Its **direct compatibility** with the **1991-1994 E31 850i and 850Ci** ensures a hassle-free fit, making it an ideal choice for enthusiasts and mechanics seeking authenticity and performance. With its **durable construction, precise engineering, and seamless integration** into the drivetrain, this driveshaft is a testament to BMW s commitment to engineering excellence, ensuring that every drive is as refined and powerful as the original.

### **Pros and Cons of Buying a BMW E31 850i/850Ci (1991-1994) with Automatic Transmission**

#### **Pros**

1. **Luxury and Prestige** The E31 850i/850Ci is one of BMW s most exclusive and desirable models from the early '90s. It carries a strong brand reputation for performance, refinement, and German engineering.

2. **Supercharged Power** The M88 engine (in the 850i) or the naturally aspirated M70 (in the 850Ci) delivers impressive power for its time. The 850i produces around **300-320 hp**, while the 850Ci (with its 5.0L inline-six) offers **286-300 hp**, making it a smooth and capable grand tourer.

3. **Automatic Transmission (ZF 5HP24 or 5HP25)** The automatic transmission is a well-regarded unit for its era, offering smooth shifts and better fuel efficiency than manual alternatives. It is also more comfortable for long-distance driving.

4. **Rear-Wheel Drive (RWD) or All-Wheel Drive (AWD) Options** The 850i/AWD variant provides excellent traction and handling, while the 850Ci remains a balanced RWD grand tourer.

5. **Classic Grand Tourer Design** The E31 s elegant, timeless styling makes it a head-turner on the road. The interior is spacious, well-appointed, and features high-quality materials, including wood and leather options.

6. **Reliability (With Proper Maintenance)** While not as bulletproof as modern cars, the E31 can be reliable if it has been well-maintained. The automatic transmission, when serviced regularly, can last well over 200,000 miles.

7. **Classic Car Market Appeal** If you plan to keep it long-term, the E31 holds value well, especially in restored or low-mileage condition. It is also a sought-after model for enthusiasts and collectors.

8. **Modification Potential** The E31 has a strong aftermarket, allowing for upgrades like performance chips, suspension modifications, and aesthetic enhancements.

9. **Driving Dynamics** The E31 handles well for its size, with precise steering and a comfortable ride. The AWD version is particularly capable in wet or snowy conditions.

10. **Nostalgia and Enthusiast Community** Owning an E31 connects you to a passionate community of BMW enthusiasts who share knowledge, restoration tips, and event participation.

---

#### **Cons**

- **Engine** The M70 (850Ci) is prone to head gasket failures, oil leaks, and valve cover gasket issues. The M88 (850i) is more robust but still requires regular attention to turbocharger and oil system components.

- **Transmission** While the automatic is durable, it can develop slipping or rough shifting over time, requiring rebuilds or replacements.

- **Suspension & Steering** Ball joints, tie rods, and bushings wear out and need frequent replacement.

- **Electrical System** Early E31s suffer from wiring issues, faulty sensors, and infotainment glitches.

2. **Fuel Economy** The E31 is not fuel-efficient by modern standards. The 850i averages **12-15 MPG**, while the 850Ci does slightly better at **14-17 MPG**. High fuel costs can add up quickly.

3. **Rust Issues** Many E31s, especially those from the early '90s, suffer from rust in the wheel wells, subframe, and lower body panels. A thorough inspection is essential before purchase.

4. **Parts Availability & Cost** While parts are still available, they can be expensive, especially for rare or discontinued components. Some aftermarket suppliers may charge premium prices.

5. **Driving Experience Limitations** The E31 is heavy and not as nimble as modern sports sedans. The automatic transmission, while smooth, lacks the precision of a modern dual-clutch or paddle-shift system.

6. **Insurance Costs** Classic car insurance can be costly, especially if the car is not properly insured as a collector s item. Standard comprehensive policies may exclude it or charge high premiums.

7. **Modern Safety & Technology Gaps** The E31 lacks modern safety features like stability control, airbags (early models may have only driver-side airbags), and advanced driver aids. It also has no Bluetooth, USB, or modern infotainment.

8. **Driveshaft/Differential Concerns** The driveshaft (especially in AWD models) and differentials can wear out over time, leading to leaks or failure. AWD models may also experience issues with the transfer case.

9. **Resale Value Depends on Condition** Unlike some classics, the E31 s resale value drops significantly if it is not well-maintained. A neglected example will be much harder to sell than a restored or low-mileage one.

10. **Driving in Urban Areas** The E31 s size (10.5 feet long) can make parking and maneuvering in tight spaces challenging compared to modern cars.

---

### **Ending Conclusion**

The BMW E31 850i/850Ci (1991-1994) with an automatic transmission is a fantastic choice if you are looking for a **luxurious, powerful, and iconic grand tourer** that offers a piece of automotive history. It rewards owners with **superior driving dynamics, timeless styling, and a strong following**, making it a joy to own and drive for enthusiasts. However, it is **not a practical daily driver** due to its **high maintenance costs, poor fuel economy, and modern safety limitations**.

If you are prepared for the **ongoing expenses, potential rust issues, and mechanical challenges**, the E31 can be a rewarding investment either as a **restoration project, a weekend cruiser, or a collector s item**. On the other hand, if you prioritize **low maintenance, fuel efficiency, and modern convenience**, this car may not be the best fit.

---

### **Recommendation**

- You have **mechanical experience or access to a trusted mechanic** to handle maintenance.

- You are **willing to budget for repairs** (expect **$5,000 $15,000 per year** depending on condition).

- You **prioritize driving pleasure and luxury** over practicality.

- You plan to **keep it for the long term** and enjoy the classic car community.

- You find a **well-documented, low-mileage example** (under **100,000 miles**) with **full service records**, preferably from a **rust-free region**.

- You need a **reliable, low-cost daily driver**.

- You are **unprepared for high maintenance costs**.

- You **cannot afford unexpected repairs** (e.g., engine rebuilds, transmission issues).

- You **value modern safety and technology** over vintage charm.

- The car has **significant rust, poor maintenance history, or obvious mechanical problems**.

- **Get a pre-purchase inspection (PPI) from a BMW specialist** who understands E31s.

- **Check for rust** (especially wheel wells, subframe, and sills).

- **Verify service history** (oil changes, timing belt, suspension, transmission service).

- **Test drive thoroughly** listen for unusual noises, check for smooth shifting, and ensure no leaks.

- **Consider a restoration project** if you find a **project car** with potential but require significant work.

For the right buyer, the E31 850i/850Ci is an **unmatched driving experience** but it demands respect and commitment. For others, it may be better suited as a **weekend or special-occasion vehicle** rather than a primary car.

Details:

Shipping costs are only covered on a case-by-case basis. 1991 1994 BMW E31 850I 850Ci. 1991 BMW 850I E31.

part #: 2304100802 prices

• $129.00-$464.00

specifications universajoin:

• for models: E31
• for makes: Bmw
• for years: 1991-1994
• mpn: 2304100802
• type: Driveshaft
• manufacturer warranty: 1 Month
• transmission type: Automatic
• country of origin: Germany

general universajoin:

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

payments universajoin:

• other
• wallet: Paypal
• credit card: Visa

shipping universajoin:

• transit: 2-6 Days
• service: Standard
• class: Standard
• type: Fixed
• cost: $50.00

offer universajoin:

• sold: 0
• started: June 3, 2026
• quantity: 1
• availability: In Stock
• best offers: True
• options: Ship-to-home

seller universajoin:

• city: Dallas, Texas
• # reviews: 1958
• rating: 99.9%

returns universajoin:

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

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