BMW 39206879520 Rear Axle Bracket Brace Vertical Strut I01 101

( Manufacturer Part Number: 39206879520 ), ( Part Type: Bracket Axle ), ( Item Length: Oem ), ( Vintage Part: No ), ( Ipn: 2014-2021 I01 I3 I3s ), ( Manufacturer Warranty: 3 Months )

Review BMW I01 101 Rear Subframe Axle Support Bracket Brace Vertical Strut Oem fits I3 2014–2021

The **BMW 39206879520 14-21 I01 I3 101 Rear Axle Bracket Brace Vertical Strut** is a precision-engineered, high-performance suspension component designed specifically for BMW s N20, N21, and N55/N57 engine variants of the **i3 (101 series)**, spanning model years from **2014 to 2021**. This critical part serves as a vital structural reinforcement within the rear axle assembly, ensuring optimal alignment, stability, and load-bearing capacity under the demanding forces of daily driving, aggressive cornering, or heavy payloads. Crafted from **high-grade steel**, this brace is forged to exacting tolerances, offering superior durability and resistance to fatigue, warping, or deformation over extended use. Its sleek, angular design integrates seamlessly with the existing suspension geometry, providing a rigid connection between the axle housing and the vehicle s chassis while minimizing unnecessary weight an essential consideration for maintaining the i3 s signature balance between efficiency and performance. Whether installed in a standard i3, the **i3s**, or even a modified or lifted variant, this brace mitigates excessive flex in the rear axle, reduces unwanted movement during high-speed maneuvers, and helps preserve the integrity of the drivetrain components, including the differential and subframe. Ideal for both OEM replacement and aftermarket upgrades, this part adheres to BMW s original specifications, ensuring a perfect fit and compatibility with the **I01 platform s suspension architecture**. For enthusiasts seeking enhanced reliability, improved handling precision, or those addressing wear from high-mileage use, this brace is an indispensable upgrade that reinforces the rear axle s structural integrity while upholding the i3 s reputation for responsive, dynamic driving dynamics.

### **Pros and Cons of buying a BMW 3-Series Rear Axle Bracket Brace (Part Number: 39206879520, I01 I3 101, 2014-2021)**

1. **Authentic OEM Fitment** This is a genuine BMW part, ensuring a perfect fit with no modifications required. It is designed specifically for the I01/I3 101 chassis (2014-2021 BMW 330i/330e/340i/340e), eliminating compatibility issues that may arise with aftermarket alternatives.

2. **Improved Structural Integrity** The rear axle brace (also known as a subframe brace or rear stabilizer brace) reinforces the rear suspension and subframe, reducing flex and improving handling stability. This is particularly beneficial for drivers who experience excessive body roll, rattles, or a soft ride quality.

3. **Prevents Excessive Noise and Vibration** Many owners report a reduction in road noise, rattles, and vibrations (especially over rough roads or at higher speeds) after installing this brace. It helps dampen unwanted movement between the subframe and chassis.

4. **Compatibility with Aftermarket Upgrades** If you ve installed aftermarket suspension components (e.g., coilovers, sway bars, or lift kits), this brace can help stabilize the rear end and prevent binding or misalignment issues.

5. **Long-Term Durability** As an OEM part, it is built to BMW s quality standards and should last the lifespan of your vehicle if installed correctly. It is made from high-strength steel, ensuring reliability.

6. **Easy Installation (For Skilled DIYers)** While installation requires some mechanical skill and basic tools (socket set, torque wrench, jack stands), many owners find it manageable with proper guidance. BMW-specific tools (e.g., subframe bolts) may be needed, but they are often reusable.

7. **Potential Resale Value Boost** Installing an OEM brace can make your vehicle appear more complete and well-maintained, which may positively influence its resale value, especially if you ve modified other suspension components.

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1. **High Cost** As an OEM part, the price is significantly higher than aftermarket alternatives. The brace itself may cost between **$200 $400**, depending on the seller (BMW dealer vs. third-party suppliers). Installation labor (if not DIY) can add another **$150 $300**, making the total expense substantial.

2. **Potential Overkill for Mild Cases** If your vehicle s rear-end issues are minor (e.g., slight rattles or minor flex), an aftermarket brace or even just tightening loose subframe bolts might suffice. A full OEM brace may be unnecessary in such cases.

3. **Installation Complexity** The brace requires removing the rear subframe, which involves disconnecting the driveshaft, exhaust, and other components. This is not a simple bolt-on job and may require disassembling parts of the suspension or exhaust system. Improper installation can lead to misalignment or damage.

4. **Limited Availability Outside BMW Dealers** While the part is widely available, sourcing it from non-dealer suppliers (e.g., eBay, Amazon, or specialty BMW parts stores) carries a risk of counterfeit or low-quality fakes. Always verify the part number and seller reputation.

5. **Time-Consuming Process** If you re not experienced with suspension work, the installation can take **4 8 hours** or more, depending on your familiarity with the process. This may not be ideal for those with limited mechanical skills or time.

6. **May Not Fix Underlying Issues** If the problem stems from worn bushings, damaged subframe mounts, or a failing rear suspension component (e.g., control arms, shocks), the brace alone won t resolve those issues. A full suspension inspection is recommended before purchasing.

7. **Potential for Over-Tightening** Some owners report that if the brace is installed too tightly, it can cause stress on adjacent components (e.g., driveshaft, exhaust), leading to binding or premature wear. Proper torque specifications must be followed.

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The **BMW 3-Series Rear Axle Brace (39206879520)** is a high-quality, OEM solution for drivers experiencing rear-end flex, rattles, or handling issues in their **I01/I3 101 (2014 2021) 330i/330e/340i/340e**. It offers **superior durability, authenticity, and structural reinforcement** compared to aftermarket alternatives, making it ideal for those who prioritize long-term reliability and a refined driving experience.

However, the **high cost, complexity of installation, and potential overkill for minor issues** make it less suitable for casual DIYers or those on a tight budget. If your vehicle s rear-end problems are severe (e.g., excessive noise, poor handling, or visible flex), the brace is a worthwhile investment. For milder issues, a **subframe bolt tightening kit or an aftermarket brace** may be a more cost-effective alternative.

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- You ve confirmed the issue is rear subframe flex or instability (not worn bushings or other suspension components).

- You re comfortable with or can afford professional installation.

- You ve already invested in aftermarket suspension upgrades and need stability.

- You want the most durable, long-term solution.

- Your budget is limited; explore **aftermarket braces** (e.g., from **Eibach, H&R, or local BMW specialists**) that offer similar benefits at a lower cost.

- The issue is minor; start with **tightening subframe bolts** or replacing worn bushings.

- You lack mechanical experience; hire a **BMW specialist** to install it for you.

- **BMW Authorized Dealers** (most reliable but expensive).

- **Reputable online retailers** (e.g., **BMW Parts America, RockAuto, eBay with verified sellers**).

- **Local BMW clubs or forums** for recommendations on trusted suppliers.

- Follow **BMW s service manual** or a **step-by-step YouTube guide** (e.g., from **BMW Repair Guides or Suspension Shop**).

- Use a **torque wrench** and **BMW-specific tools** (e.g., subframe bolts may require a **17mm socket with a breaker bar**).

- Inspect **driveshaft angles, exhaust mounts, and subframe bolts** during installation to ensure everything is properly aligned.

**Final Verdict:** For serious rear-end issues in a **2014 2021 BMW 3-Series (I01/I3 101)**, the **OEM brace is the best choice** for long-term reliability. However, weigh the cost and effort against the severity of your problem before committing. If in doubt, consult a **BMW mechanic** for a professional assessment.

Details:

Item may show light scuffs, scratches or other imperfections as a result of this being used part. All electronics are tested before removed from vehicle. Shipping prices for ground apply only to the continental USA. ENG: 0.6L TRAN: AUTO.

All the parts are tested either before or after removal from vehicle. 2016 BMW I3 K67.

part #: 39206879520 prices

• $64.22-$174.99

specifications mocycfra:

• for makes: Bmw
• for years: 2014-2021
• mpn: 39206879520
• part type: Bracket Axle
• item length: Oem
• vintage part: No
• ipn: 2014-2021 I01 I3 I3s
• manufacturer warranty: 3 Months

offer mocycfra:

• options: Ship-to-home
• started: February 12, 2026
• quantity: 1
• sold: 0
• availability: In Stock
• best offers: True

returns mocycfra:

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

payments mocycfra:

• credit card: Mastercard
• wallet: Paypal
• money order
• other

shipping mocycfra:

• class: Expedited
• carrier: USPS
• service: USPS Priority Mail
• cost: $35.00
• transit: 3-8 Days
• type: Fixed

general mocycfra:

• condition: Used
• Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts

seller mocycfra:

• city: Yuba City, California
• rating: 99.9%
• # reviews: 12322

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