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  3. AUDI 8E0821101

AUDI 8E0821101 Avant Driveshaft Auto

fits model: S4, B7, J3. make: Audi. year: 2006–2021.

8e0821101 Audi 2006 S4 B7 Avant Driveshaft - Auto #2021 J3

( Manufacturer Part Number: 8E0821101 ), ( Part Type: Driveshaft ), ( Country Of Origin: Germany )

Review AUDI Avant Driveshaft Auto fits S4 B7 J3 2006–2021

The **Audi 8E0821101 (2006 B7 Avant S4) Rear Driveshaft (Auto, J3)** is a precision-engineered component designed exclusively for Audi s iconic 2006 B7 platform, specifically tailored to the high-performance S4 Avant model. This driveshaft is a critical part of the vehicle s drivetrain, ensuring seamless power transfer from the transmission to the rear wheels while maintaining optimal balance, handling, and durability under the demanding conditions of sporty driving. Crafted from high-grade, heat-treated steel, it is built to withstand the intense torque and lateral forces generated by the S4 s 3.2-liter V6 biturbo engine, which produces a robust 333 horsepower and 309 lb-ft of torque. The driveshaft features a robust universal joint (U-joint) assembly at both ends, including a **J3-style constant velocity (CV) joint** on the wheel side, which provides smooth, low-friction articulation for enhanced ride comfort and precise wheel response. The internal splines are precision-machined to ensure a secure, vibration-free connection with the differential, while the protective boot is designed to shield the joint from contaminants, preventing premature wear and extending the component s lifespan. This driveshaft is fully compatible with Audi s **8-speed Tiptronic automatic transmission (09G)** and is engineered to meet the strict quality standards expected from an Audi performance vehicle, ensuring reliable performance in both daily driving and spirited acceleration scenarios. Whether used for maintenance, replacement, or upgrading an existing setup, this driveshaft is a direct-fit solution that delivers the performance and refinement Audi enthusiasts demand.

### Pros and Cons of Buying a 2006 Audi S4 (8E, B7 Avant, 2021 J3) with Automatic Transmission

#### **Pros:** 1. **Performance and Driving Dynamics:**

The 2006 Audi S4 (B7 Avant) is a well-regarded performance sedan with a naturally aspirated 3.2L V6 engine producing around 280 300 horsepower, depending on the model. It delivers strong acceleration and a sporty driving experience, especially for its time. The quattro all-wheel-drive system enhances traction and handling, making it capable in various conditions.

2. **Reliability of the Platform:**

The B7 Avant platform (used in the S4) is generally robust, particularly when maintained properly. Many owners report that with regular servicing, the engine, transmission, and suspension components hold up well for their age. The 3.2L V6 is known for being durable if oil changes and other maintenance are kept up.

3. **Aftermarket Support and Modifications:**

The S4 has a strong aftermarket community, offering a wide range of upgrades for performance, aesthetics, and comfort. Tuning options (e.g., cold air intakes, exhaust systems, ECU tuning) can enhance power and throttle response. Cosmetic modifications like body kits, wheels, and interior upgrades are also widely available.

4. **Comfort and Practicality:**

The Avant (station wagon) body style provides more cargo space than a coupe or sedan, making it practical for daily use. The interior is well-built, with high-quality materials (for its class and era), and the driving position is ergonomic, offering good visibility and driver engagement.

5. **Resale Value and Enthusiast Appeal:**

Audi S4s, especially the B7 generation, hold their value relatively well among performance Audi models. The S4 s reputation as a fun, capable car attracts buyers, which can be beneficial if you decide to sell later. It s also a popular choice among enthusiasts, which can make parts and maintenance easier to source.

6. **Quattro AWD System:**

The quattro system is a standout feature, providing excellent grip in wet or slippery conditions. This is particularly useful if you live in an area with variable weather or enjoy driving on twisty roads.

7. **Classic Audi S4 Era:**

Owning a B7 S4 allows you to experience a classic Audi performance car from the early 2000s, a time when Audi was pushing boundaries with its S models. The driving experience is engaging without being overly extreme, striking a balance between comfort and sportiness.

---

#### **Cons:** 1. **Aging Technology and Reliability Risks:** The 2006 S4 is now over 17 years old, which means it s approaching the end of its natural lifespan. Common issues to watch for include:

- **Timing Chain and Tensioner:** The 3.2L V6 is known to develop timing chain stretch or tensioner failure over time, which can lead to engine knocking or catastrophic failure if ignored. Regular inspections and replacements (typically every 80,000 100,000 miles) are recommended.

- **Transmission (Automatic):** The 01N or 09N automatic transmissions used in this model can be finicky. Issues like delayed shifts, rough engagement, or solenoid failures are not uncommon. Some owners report needing to rebuild or replace the transmission after 100,000 miles.

- **Suspension and Bushings:** The front and rear suspension components (control arms, bushings, struts) may wear out over time, leading to clunks or poor handling. Replacing these can be costly.

- **Electrical Gremlins:** Older Audis are notorious for electrical issues, such as faulty sensors, wiring problems, or infotainment glitches. The 2006 model may have outdated or less robust electronics compared to newer Audis.

2. **Maintenance and Repair Costs:**

Audi parts and labor can be expensive, especially for specialized components like turbochargers (if applicable), suspension parts, or transmission rebuilds. The cost of maintaining a high-performance car like the S4 can add up quickly, particularly if you re not mechanically inclined or don t have access to a trusted Audi specialist.

3. **Fuel Economy:**

The S4 s 3.2L V6 is thirsty, with fuel economy around 16 18 MPG in the city and 22 24 MPG on the highway. This is lower than modern turbocharged or hybrid alternatives, making it less efficient and more costly to operate over time.

4. **Comfort and Modern Comparisons:**

Compared to modern performance cars, the S4 lacks advanced driver aids (like adaptive cruise control, lane-keeping assist, or advanced safety features). The ride can also feel firmer than contemporary Audis, which often prioritize comfort over sportiness. The interior may feel dated by today s standards, with less advanced infotainment systems.

5. **Depreciation:**

While the S4 holds its value better than some Audis, it has still depreciated significantly over the years. Buying a used S4 means you re paying a premium for a car that s no longer in production, and you won t benefit from new technology or safety updates.

6. **Potential for Hidden Issues:**

Without a thorough inspection or service history, you risk buying a car with hidden problems. Issues like water leaks (which can damage electronics or the interior), rust (especially in the wheel wells or undercarriage), or neglected fluid changes can turn into costly repairs if not addressed early.

7. **Limited Modern Features:**

The S4 lacks features common in today s cars, such as Bluetooth connectivity, modern infotainment systems, or advanced driver-assistance technologies. If you rely on these features for daily use, you may find the S4 outdated.

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### **Conclusion:**

The 2006 Audi S4 (B7 Avant) is a fantastic car for enthusiasts who prioritize driving dynamics, performance, and the classic Audi experience. It offers a fun, engaging ride with strong acceleration and all-wheel drive, and its aftermarket support makes it highly customizable. However, it comes with significant drawbacks, particularly around reliability risks, maintenance costs, and aging technology.

If you re mechanically inclined, have a budget for potential repairs, and enjoy the challenge of maintaining a classic performance car, the S4 can be an excellent purchase. On the other hand, if you prefer modern convenience, lower running costs, or advanced safety features, a newer or differently equipped car might be a better fit.

---

### **Recommendation:** 1. **Buy Only If:**

- You have experience with or access to a trusted mechanic who can inspect the car thoroughly.

- You re prepared for potential timing chain, transmission, or suspension issues and have a budget for repairs.

- You prioritize driving enjoyment and don t mind the car s limitations (e.g., fuel economy, modern features).

- You plan to keep the car for at least 5 7 years, allowing you to recoup some of the investment.

- The car has a complete service history, especially for oil changes, timing chain inspections, and transmission maintenance.

2. **Consider Alternatives If:**

- You want a more reliable or modern performance car (e.g., a newer BMW M3, Audi S5, or Porsche 911).

- You re not comfortable with the risk of major repairs or high maintenance costs.

- You need better fuel economy or modern technology for daily use.

3. **Negotiation Tips:**

- Always get a pre-purchase inspection (PPI) from a trusted mechanic before buying.

- Ask for full service records, especially for the timing chain, transmission, and suspension.

- Be wary of cars with excessive mileage (over 120,000 miles) unless they ve had major overhauls.

- Compare the price to similar Audi S4s in your area to ensure you re not overpaying.

4. **Budget for Upfront Costs:**

- Expect to spend at least $5,000 $10,000 on repairs or upgrades in the first year or two, depending on the car s condition.

- Allocate funds for a timing chain inspection/replacement if it s due.

- Consider a transmission flush or rebuild if the car has high mileage.

In summary, the 2006 Audi S4 is a rewarding but high-maintenance purchase best suited for those who appreciate its strengths and are prepared for its challenges. If you re willing to put in the effort, it can be an incredible driving experience. Otherwise, a more modern or reliable alternative may be a safer choice.

Details:

Accessory components included only if pictured. 2006 Audi S4 B7 Quarto Avant Driveshaft - Auto. Electronic components may require programming, coding, or re-flashing by a qualified technician. 2025 AZ Cycle Parts.

Engines, transmissions, and drive line parts are sold as long blocks or assemblies may not include accessories sensors, mounts, wiring, etc. Unless specifically listed. It is a used OEM component that may show signs of normal wear such as scratches, scuffs, or minor corrosion consistent with age and mileage. Mileage: 159,341.

part #: 8e0821101 price

  • $112.49

specifications universajoin:

  • for models: S4, B7, J3
  • for makes: Audi
  • for years: 2006-2021
  • mpn: 8e0821101
  • part type: Driveshaft
  • country of origin: Germany

offer universajoin:

  • sold: 0
  • availability: In Stock
  • started: June 12, 2026
  • quantity: 1
  • options: Ship-to-home

general universajoin:

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

shipping universajoin:

  • carrier: FedEx
  • cost: $79.95
  • transit: 4-8 Days
  • class: Standard
  • type: Fixed
  • service: FedEx Ground / FedEx Home Delivery

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  • policy: Returns Accepted
  • time: 30 Days

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  • # reviews: 73825
  • city: Phoenix, Arizona
  • rating: 99.2%
for models: s4, b7, j3, for makes: audi, for years: 2006-2021, part type: driveshaft, country of origin: germany,
category: auto parts > transmission drivetrain > driveshafts parts > driveshafts, sku: 15757445549644813,
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1 offer $112.49 USD
  • Used. Offer #1 priced at $112.49 + $79.95 shipping estimate = $192.44* total. 2025 AZ Cycle Parts 2006 Audi S4 B7 Quattro Avant Driveshaft - Auto.+$79.95 shipping

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