AUDI 4E0521101G Rear Driveshaft Propeller Shaft 4E0521101C 4.2L

( Manufacturer Part Number: 4E0521101G ), ( Part Type: Driveshaft Propeller Shaft ), ( Warranty: 30 Day ), ( Ipn: 4e0521101c ), ( Tested: Tested, Cleaned And Inspected ), ( Placement On Vehicle: Rear ), ( Fitment Type: Direct Replacement )

Review AUDI 4.2l Rear Driveshaft Propeller Shaft fits QUATTRO A8 2004–2010

The **Audi 4E0521101G rear driveshaft (propeller shaft)** for the **2004 2010 Audi A8 4.2L Quattro** is a precision-engineered component designed to deliver seamless power transfer from the transmission to the rear axle in this high-performance luxury sedan. Crafted from high-grade, heat-treated steel, this driveshaft combines durability with smooth operation, ensuring optimal efficiency even under demanding driving conditions. The assembly features a robust **constant velocity (CV) joint at the transmission end**, allowing for smooth angular movement and reducing vibration transfer, while the **spline-shaft connection at the rear axle** ensures a secure and precise fit, minimizing backlash and maintaining consistent power delivery. The driveshaft is engineered with a **balanced weight distribution**, reducing rotational inertia and enhancing overall drivability, particularly in the A8 s sport-tuned Quattro all-wheel-drive system. Its **sealed and lubricated joints** protect against dust, moisture, and debris, extending the component s lifespan while maintaining quiet operation. Whether navigating city streets or high-speed highways, this driveshaft plays a critical role in the A8 s responsive and refined performance, embodying Audi s commitment to engineering excellence in both luxury and engineering precision.

### Pros and Cons of Buying a 2004 2010 Audi A8 (4E0 521101G) 4.2L Rear Driveshaft (Propeller Shaft)

1. **Performance and Power** The 4.2L V8 engine in the A8 (4E0) produces **333 354 hp** (depending on the model year) and **315 lb-ft of torque**, delivering strong acceleration and a smooth, high-revving driving experience. This makes it a capable luxury sedan with sporty handling, especially in the quattro AWD version.

2. **Luxury and Comfort** The A8 is a flagship Audi model, offering premium interior materials, advanced sound systems, heated/ventilated seats, and a refined cabin. The ride is smooth, with excellent noise insulation, making long drives comfortable.

3. **Reliability (with proper maintenance)** While not as bulletproof as some German rivals, the 4.2L V8 is a well-engineered engine when maintained correctly. Many examples last **200,000 miles** with regular oil changes, timing belt replacements, and cooling system upkeep.

4. **Quattro AWD System** The quattro all-wheel-drive system enhances traction in all weather conditions, making it a practical choice for drivers in snowy or wet climates.

5. **Resale Value** Audi s luxury brand retains decent resale value, especially for well-maintained examples. The A8 remains a desirable used luxury sedan.

6. **Driving Dynamics** The A8 s rear-wheel-drive (or quattro) setup provides engaging handling, especially in the sportier models (e.g., S8 or quattro versions). The suspension tuning offers a good balance between comfort and sportiness.

7. **Availability of Parts and Service** As a discontinued model, parts are still widely available, though some aftermarket support may be needed for less common components.

8. **Tech Features (for the era)** Early 2000s A8s featured advanced options like **adaptive cruise control, blind-spot monitoring, and premium audio systems**, which were cutting-edge at the time.

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- **Cooling system failures** (water pump, thermostat, hoses) The 4.2L V8 is thirsty for coolant and prone to leaks.

- **Timing belt/replacement** Must be done every **60,000 100,000 miles** (varies by model); failure can cause catastrophic engine damage.

- **Suspension wear** Air suspension (if equipped) can be unreliable and costly to repair.

- **Electrical gremlins** Infotainment systems, window regulators, and door locks can fail over time.

2. **Fuel Economy** The 4.2L V8 averages **16 18 MPG combined**, making it expensive to operate compared to modern hybrids or smaller engines.

3. **Rust Issues** Older Audis (especially in snowy or coastal regions) can suffer from **frame and subframe rust**, which weakens structural integrity. A thorough inspection is critical.

4. **Depreciation** While it retains value better than some luxury cars, the A8 has still lost significant value since its peak. Buying used means paying a premium over its current market worth.

5. **Complexity** The A8 s advanced systems (quattro, air suspension, electronic stability control) require specialized knowledge to diagnose and repair, increasing repair costs.

6. **Recall and Safety Concerns** Some 2004 2010 A8s may have **unaddressed recalls** (e.g., airbag, seatbelt, or stability control issues). Always check the vehicle history for recalls.

7. **Interior Wear** High-end materials can degrade over time, and some plastic components may feel cheap compared to newer Audis.

8. **Discontinued Model** No longer in production means **no new parts or warranty support**, relying solely on aftermarket or used parts.

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### **Ending Conclusion & Recommendation**

The **2004 2010 Audi A8 4.2L quattro (4E0 521101G)** is a **high-performance luxury sedan** that excels in comfort, power, and driving dynamics but comes with **significant maintenance and ownership costs**. It is best suited for:

- **Enthusiasts who prioritize driving enjoyment** over fuel efficiency.

- **Owners who can afford and commit to regular maintenance** (cooling system, timing belt, suspension).

- **Drivers in regions where AWD is beneficial** (snow, rain, rough roads).

- **Those who value Audi s brand prestige** and don t mind higher repair bills.

- You re on a tight budget, as **unexpected repairs can be costly**.

- You prefer **lower maintenance** (consider a Toyota LS400, BMW 740i, or Mercedes E55 AMG instead).

- The car has **visible rust, poor maintenance history, or unaddressed recalls**.

- You need **better fuel economy** (modern hybrids or smaller V6s may be more practical).

If you find a **well-documented, low-mileage example (under 100,000 miles) with a clean service history**, the A8 can be a **fantastic luxury driving machine**. However, **budget at least $10,000 $15,000 annually for maintenance** beyond basic upkeep. If you re unsure about the repair costs, consider a **used BMW 7 Series or Mercedes E-Class** as alternatives with slightly better long-term reliability.

**Best for:** Audi purists, those who want a **sporty luxury sedan** and can handle the costs.

**Avoid if:** You want a **low-maintenance, cost-effective** luxury car.

Details:

Remember LEFT means the Drivers side of vehicle and RIGHT Passengers in our listings. Part Fitment and Compatibility. 2008 2010AudiA8 QuattroSedan4.2LGas. For Vehicles with Engine Code BVJ.

part #: 4e0521101g prices

• $390.00-$1046.09

specifications universajoin:

• for models: A8, Quattro
• for makes: Audi
• for years: 2004-2010
• mpn: 4e0521101g
• part type: Driveshaft Propeller Shaft
• warranty: 30 Day
• ipn: 4e0521101c
• tested: Tested, Cleaned And Inspected
• placement on vehicle: Rear
• fitment type: Direct Replacement

offer universajoin:

• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: May 19, 2026

shipping universajoin:

• service: Standard
• type: Fixed
• cost: $50.00
• class: Standard
• transit: 2-4 Days

general universajoin:

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

seller universajoin:

• # reviews: 102499
• city: Waverly, Minnesota
• rating: 99.8%

returns universajoin:

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

payments universajoin:

• wallet: Apple-pay
• other
• credit card: Diners-club

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