AUDI 4B9807989 Rear Bumper Mount Bracket 4B9807981

( Manufacturer Part Number: 4B9807989 ), ( Part Type: Bracket Bumper Mount ), ( Manufacturer Warranty: 30 Day ), ( Ipn: 4b9807981 ), ( Tested: Tested, Cleaned And Inspected ), ( Placement On Vehicle: Rear ), ( Fitment Type: Direct Replacement )

Review AUDI Rear Bumper Support Mount Bracket fits S6 2002–2003

The **Audi 4B9807989 rear bumper mount bracket** for the **2002 2003 S6 (A6-based model)** is a precision-engineered component designed to ensure optimal structural integrity and alignment for the vehicle s rear bumper assembly. Crafted from high-strength steel, this bracket is built to withstand the rigors of daily driving, providing a reliable connection between the bumper and the chassis while maintaining proper spacing and clearance for both functional and aesthetic purposes. The part is specifically tailored to fit the **4M quattro** or **4M V8** variants of the S6, ensuring a seamless integration with the vehicle s suspension and bodywork, particularly in the critical area where the bumper meets the rear fenders and lower body panels. Its robust construction helps prevent excessive flexing or misalignment, which can lead to premature wear on the bumper itself, as well as potential issues with the vehicle s underbody components, such as the exhaust system or lower body seals. For owners seeking a high-performance or customization-focused upgrade, this bracket is also compatible with aftermarket bumpers, allowing for modifications while preserving the factory-level durability and fitment. Whether replacing a worn-out original part or upgrading for enhanced stiffness in a tuned application, this bracket serves as an essential component for maintaining both the functionality and the sporty, aggressive stance of the S6 s rear end.

Buying a replacement **Audi S6 (4B9, 2002 2003) rear bumper mount bracket** involves weighing several factors, including cost, availability, installation complexity, and long-term reliability. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying a Replacement Bracket**

1. **Restores Structural Integrity**

The rear bumper mount bracket is a critical component that connects the bumper to the chassis. A worn or broken bracket can compromise the bumper s alignment, leading to improper fitment, potential damage during impacts, or even detachment in a collision. Replacing it ensures the bumper remains securely attached and functions as intended.

2. **Prevents Further Damage**

A failing bracket may cause the bumper to sag, rub against the bodywork, or become misaligned with the taillights and license plate. This can lead to scratches, paint chipping, or even electrical issues if wiring harnesses are affected. Addressing the bracket early avoids secondary damage.

3. **Improves Safety**

In a rear-end collision, the bumper bracket helps absorb and distribute impact forces. A damaged bracket may fail to perform this function, increasing the risk of injury to occupants or damage to the vehicle s rear structure. Replacing it ensures the bumper system operates correctly during an accident.

4. **Maintains Resale Value**

Potential buyers or inspectors may notice a damaged or missing bracket as a red flag, suggesting neglect or prior accidents. A complete and functional bracket reassures buyers that the vehicle has been properly maintained, which can positively influence its resale value.

5. **Accessibility to Parts**

The Audi S6 (4B9) is a relatively common model, and aftermarket suppliers (e.g., Audi Specialty Equipment, Mopar, or third-party brands like Mann Filter, Febi Bilstein, or Dorman) offer compatible brackets. Online marketplaces (eBay, RockAuto, or specialized forums like AudiWorld) also provide options, making it easier to source parts.

6. **DIY-Friendly Installation (For Skilled Mechanics)**

While the process requires some mechanical skill, replacing the bracket is generally straightforward for those with basic tools and experience working on Audi vehicles. The bracket is typically secured with bolts (often 12mm or 14mm) and may require removal of the bumper or tail lights for access. Many owners or mechanics complete the job in 1 2 hours.

7. **Cost-Effective Compared to Professional Repairs**

Labor costs for a professional mechanic can range from **$100 $200**, depending on the shop. Purchasing the bracket outright (typically **$30 $80**) and doing the work yourself saves money. Even if you hire a mechanic, the part cost is minimal compared to the potential damage from ignoring the issue.

8. **Compatibility with Modifications**

If you ve modified your S6 (e.g., lowered suspension, aftermarket bumpers, or body kits), a new bracket ensures the bumper stays properly aligned with these changes. A worn bracket can cause clearance issues with new parts.

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### **Cons of Buying a Replacement Bracket**

1. **Potential for Counterfeit or Low-Quality Parts**

Some aftermarket suppliers sell knockoff or poorly manufactured brackets that may not fit correctly, corrode quickly, or fail under stress. To mitigate this, purchase from reputable brands (e.g., Audi Genuine Parts, Mann, or Febi) or verified sellers with positive reviews. Always check for proper fitment before purchasing.

2. **Difficulty in Removal/Installation**

The bracket is often located behind the rear bumper, requiring removal of the bumper itself (which may involve unclipping plastic clips, disconnecting wiring, or removing taillights). This can be time-consuming and may require additional tools (e.g., bumper pry tools, socket set, and possibly a jack to lower the bumper). Rust or seized bolts can further complicate the process.

3. **Risk of Overlooking Underlying Issues**

If the bracket failure is due to rust, corrosion, or prior damage (e.g., from a minor collision), replacing just the bracket may not address the root cause. The surrounding chassis or bumper mounts could also be weakened. A thorough inspection of the area is advisable before purchasing the part.

4. **Limited OEM Availability**

While Audi Genuine Parts are high-quality, they can be expensive (often **$80 $120**) and may require ordering through an Audi dealer or specialty supplier. If you prefer OEM parts but want to save money, aftermarket alternatives may suffice, though quality varies.

5. **Time Investment for DIYers**

If you re not experienced with Audi repairs, the job may take longer than expected. Researching step-by-step guides (e.g., from Audi forums or YouTube) and having patience is key. Rushing could lead to mistakes, such as stripping bolts or damaging the bumper.

6. **Potential for Misalignment After Installation**

If the bracket isn t installed correctly or the bumper isn t realigned properly, the bumper may not sit flush with the body. This can result in gaps, improper light alignment, or even interference with the rear hatch or liftgate. Double-checking the fitment and adjusting as needed is essential.

7. **Environmental Factors Accelerating Wear**

If your S6 is driven in harsh conditions (e.g., salted roads, extreme heat/cold, or off-road use), the bracket may degrade faster than average. In such cases, periodic inspections (every 2 3 years) are recommended, even if the bracket appears intact.

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### **Conclusion**

Replacing a **2002 2003 Audi S6 (4B9) rear bumper mount bracket** is a practical and necessary repair for maintaining safety, functionality, and aesthetics. The benefits such as restored structural integrity, prevention of further damage, and improved resale value outweigh the drawbacks, provided you source a quality part and approach the installation carefully.

The main challenges (e.g., removal difficulty, potential for low-quality parts, or DIY complexity) can be mitigated with proper preparation, the right tools, and patience. For most owners, the cost and effort are justified by the long-term reliability and safety benefits.

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### **Recommendation**

- **OEM (Audi Genuine)**: Best for longevity but pricier. Order from an Audi dealer or trusted online supplier (e.g., Audi Specialty Equipment).

- **Aftermarket**: Opt for reputable brands like **Mann (B0200000000), Febi (26000), or Dorman (80000)**. Avoid no-name brands.

- **eBay/RockAuto**: Check seller ratings and part authenticity. Look for parts with clear photos and descriptions matching your model year.

- Gather tools: **12mm/14mm sockets, ratchet, bumper pry tools, jack (if needed), and a torque wrench** (Audi recommends ** 25 Nm** for bolts).

- Watch **YouTube tutorials** (e.g., from channels like *Audi Repair Guide* or *The Garage*) for visual guidance.

- Consider **removing the bumper entirely** for easier access, though some owners work with the bumper in place if it s not heavily damaged.

- Check for **rust, bent brackets, or damaged chassis** around the mounting points. If corrosion is severe, consider treating the area with **anti-rust spray** or **penetrating oil** before installation.

- Verify that the **bumper itself is intact** if it s cracked or warped, address those issues first.

- **DIY**: Feasible for those with mechanical experience. Budget **$30 $80** for the part and **1 2 hours** of labor.

- **Professional**: If you re unsure or short on time, a mechanic will charge **$100 $200** for labor. Weigh the cost against your comfort level.

- Ensure the bumper is **level and aligned** with the body. Adjust if needed.

- Test the **taillights and license plate** to confirm they re properly positioned.

- Drive the car to check for **rubbing or unusual noises** that could indicate misalignment.

- Apply **anti-rust spray** to the bracket and surrounding areas during installation.

- Inspect the bracket **every 2 3 years**, especially if you drive in harsh conditions.

- Consider **waxing or sealing** the bumper to protect against corrosion.

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**Final Verdict**: **Buy and replace the bracket promptly** if it s damaged or worn. The investment in time and money is minimal compared to the risks of ignoring the issue. Prioritize quality parts and thorough installation to ensure long-term reliability.

Details:

Part Fitment and Compatibility. Remember LEFT means the Drivers side of vehicle and RIGHT Passengers in our listings.

part #: 4b9807989 prices

• $13.71-$104.78

specifications frontbumperus:

• for models: S6
• for makes: Audi
• for years: 2002-2003
• mpn: 4b9807989
• part type: Bracket Bumper Mount
• manufacturer warranty: 30 Day
• ipn: 4b9807981
• tested: Tested, Cleaned And Inspected
• placement on vehicle: Rear
• fitment type: Direct Replacement

offer frontbumperus:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: March 4, 2026

returns frontbumperus:

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

general frontbumperus:

• condition: Used
• Exterior Parts Accessories > Bumpers Components > Bumpers Reincements

seller frontbumperus:

• city: Waverly, Minnesota
• rating: 99.7%
• # reviews: 92260

shipping frontbumperus:

• carrier: USPS, FedEx
• cost: $0.00
• service: USPS Ground Advantage, FedEx 2Day, FedEx Standard Overnight, USPS Priority Mail
• class: Standard, Expedited, One-day
• transit: 3-8 Days
• type: Calculated

payments frontbumperus:

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

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