fits model: E93, M3. make: Bmw. year: 2008–2013.

( Manufacturer Part Number: 33552283962 ), ( Part Type: Axle Stabilizer Bar )
The **BMW E93 M3 Convertible Rear Axle Anti-Sway Stabilizer Bar (Part Number: 33552283962, Fits Models: 2008 2013)** is a precision-engineered suspension component designed to enhance the handling dynamics and stability of one of the most revered performance convertibles ever produced. This high-performance stabilizer bar is a critical element of the E93 M3 s rear suspension system, specifically tailored to deliver the balanced, responsive cornering and controlled body roll that enthusiasts and track-focused drivers demand. Crafted from durable, high-grade steel, the stabilizer bar is built to withstand the rigors of spirited driving, aggressive cornering, and even occasional off-road excursions, ensuring long-term reliability without compromising on performance. Its robust construction minimizes torsional flex, which is essential for maintaining consistent wheel contact with the road particularly during high-speed maneuvers or when transitioning between corners. The design of this stabilizer bar is optimized to work in tandem with the E93 s sport-tuned suspension geometry, including the adjustable coilovers and multi-link rear setup, to provide a harmonious blend of stability and agility. Whether navigating tight urban streets, carving through winding backroads, or pushing the limits on a racetrack, this stabilizer bar contributes to a more predictable and engaging driving experience by reducing unwanted body lean and enhancing the car s lateral grip. For owners seeking to preserve or restore their M3 s factory-tuned precision or those looking to upgrade their suspension for improved performance, this OEM-spec stabilizer bar is an essential component that bridges the gap between raw power and refined handling. Its compatibility with the 2008 2013 model years ensures a seamless fit, allowing for straightforward installation and immediate benefits in terms of stability, responsiveness, and overall driving enjoyment.
### **Pros and Cons of Buying a 2008 2013 BMW E93 M3 Convertible with a Faulty Rear Anti-Sway Bar**
#### **Pros**
1. **Performance and Driving Dynamics**
The E93 M3 is a highly capable sports sedan with a naturally aspirated 3.8L inline-six engine producing around **400 420 hp** (depending on the year and tuning). It delivers sharp handling, precise steering, and a balanced chassis, making it a favorite among enthusiasts. The convertible variant adds the thrill of open-air driving without sacrificing performance.
2. **Reliability of the Core Components**
The E93 platform is known for its robust construction, particularly in suspension, brakes, and drivetrain components. Many key parts (engine, transmission, suspension arms) are durable if maintained properly. The **N62 engine** is well-regarded for longevity when serviced regularly.
3. **Aftermarket Support and Tuning Potential**
The M3 s architecture is highly modifiable. The **N62 engine** responds well to upgrades like cold air intakes, exhaust systems, and ECU tuning (e.g., **MHD, M3Soft, or custom tuning**). The **6-speed Getrag transmission** (or **ZF 6HP21 in later models**) is robust and can handle aggressive driving with proper maintenance.
4. **Classic Status and Community**
The E93 M3 is a modern classic, gaining appreciation over time. The convertible variant is rarer than the coupe, which may increase its long-term value. A strong owner community exists for troubleshooting, parts sourcing, and restoration projects.
5. **Convertible Top Mechanism**
While not as refined as later BMW convertibles, the E93 s top is functional and can be serviced. Some owners prefer the simplicity of a manual or semi-automatic top over fully automatic systems.
6. **Resale Value Potential**
If well-maintained, an E93 M3 (especially in lower-mileage examples) holds value well. The **2010 2013 models** with minor updates (e.g., improved electronics, slight power tweaks) may appreciate more over time.
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#### **Cons**
1. **Rear Anti-Sway Bar Failure (Your Specific Concern)**
The **rear anti-sway bar** in the E93 M3 is notorious for **snapping or cracking**, often due to **corrosion, fatigue, or improper installation**. A broken bar can lead to:
- **Excessive body roll** during cornering, reducing stability.
- **Uneven tire wear** and compromised handling.
- **Potential damage to other suspension components** if ignored.
- **Recalls or TSBs** (BMW issued a recall in 2012 for some models, but many affected cars were never fixed).
**Replacement cost:** $500 $1,200 (parts labor), depending on whether you use OEM or aftermarket.
2. **Convertible Top Reliability**
The **manual/semi-automatic top** is prone to **leaks, stiff cables, and motor failures** (if equipped). Over time, the **rubber seals degrade**, leading to water intrusion and electrical issues. Some owners opt for **full hardtop conversions** to avoid these problems.
3. **Electrical and Infotainment Issues**
The E93 s **iDrive system** (especially in earlier models) can be **glitchy, slow, or unresponsive**. Later models (2010 ) have slight improvements, but **software updates are limited**. Bluetooth, parking sensors, and other electronics may require **aftermarket upgrades** for reliability.
4. **Maintenance Costs**
While not as expensive as a modern BMW, the E93 requires **regular servicing** to prevent major issues:- **Timing belt replacement** ( $1,000 $1,500 every **60,000 100,000 miles**).
- **Suspension wear** (ball joints, bushings, shocks) due to aggressive driving.
- **Brake system upgrades** (performance pads, rotors, and calipers wear faster than stock).
- **Fuel system maintenance** (carbon buildup, injectors) to maintain power.
5. **Common Suspension and Steering Problems**
- **Front sway bar bushings** can wear out, leading to clunks.
- **Steering rack leaks** (power steering fluid) can cause **whining noises and reduced assist**.
- **Control arm bushings** may need replacement ( $500 $1,000 total).
6. **Fuel Economy and Running Costs**
The **N62 engine** is thirsty, averaging **12 15 MPG in the city and 18 22 MPG on the highway**. High-performance driving (e.g., track use) will reduce this further. **Premium fuel (91 octane) is required** to prevent knocking.
7. **Weight and Practicality**
The E93 M3 is **heavier than lighter sports cars** (e.g., a Porsche 911), which can make it feel less nimble in tight corners. The **convertible top adds weight** when down, slightly reducing performance.
8. **Depreciation (Compared to Modern Alternatives)**
While the E93 holds value, it **depreciates faster than newer performance cars** (e.g., a 2020 BMW M340i). If you plan to keep it long-term, this is less of an issue, but if you want a **modern luxury sports car**, alternatives may be more cost-effective.
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### **Key Considerations Before Buying**
1. **Inspect the Rear Anti-Sway Bar Thoroughly**
- **Visual inspection:** Look for cracks, corrosion, or bent ends.
- **Functional test:** Drive the car and check for **excessive body roll** or **clunks** when cornering.
- **Replacement cost:** Budget for a **full suspension inspection** ( $200 $400 at a reputable shop).
- **Alternative:** Some owners **delete the rear bar** (not recommended for daily driving) or replace it with a **stiffer aftermarket unit** ( $300 $600).
2. **Check the Convertible Top**
- **Test the mechanism** (manual/semi-auto) for smooth operation.
- **Inspect for leaks** (water stains in the cabin, rust around the frame).
- **Consider a hardtop** if the top is unreliable ( $3,000 $6,000 installed).
3. **Verify Maintenance History**
- **Timing belt service?** If not done, **replace it immediately** failure can destroy the engine.
- **Suspension upgrades?** Stock bushings and shocks wear out quickly; expect to replace them.
- **Fuel system cleaning?** Carbon buildup can reduce power ( $200 $400 for a full service).
4. **Test Drive for Handling Quirks**
- **Excessive body roll?** Could indicate sway bar issues.
- **Unusual noises?** Steering rack, suspension, or exhaust leaks.
- **Brake performance?** Performance brakes (e.g., **Brembo, AP Racing**) are recommended.
5. **Budget for Upgrades**
- **Minimum recommended upgrades:**- **Suspension** (shocks, bushings, sway bar).
- **Brakes** (performance pads, rotors, calipers).
- **Exhaust** (for better flow and sound).
- **ECU tune** (for extra power and drivability).
- **Total estimated cost:** $3,000 $6,000 for a **basic build-out**.
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### **Final Recommendation**
**Buy the E93 M3 Convertible if:**You **prioritize driving enjoyment** over daily practicality and are prepared for **regular maintenance**.
You **plan to restore or modify it** (the E93 is a great project car with strong aftermarket support).
You **find a well-documented example** with **proven rear sway bar integrity** and **full maintenance records**.
You **accept the trade-offs** (higher running costs, electrical quirks, convertible top limitations) in exchange for **raw performance and classic appeal**.
**Avoid or Proceed with Caution if:**The **rear sway bar is cracked or unknown history** this is a **dealbreaker** without confirmation it s been replaced.
The **convertible top is neglected** water leaks and motor failures add **unnecessary expense**.
You **expect modern reliability** the E93 is **not a plug-and-play** car; it requires **active ownership**.
Your budget is **tight** factor in **$5,000 $10,000 in upgrades** within the first year.
**Best Approach:**- **Get a pre-purchase inspection (PPI)** from a **BMW specialist** ( $200 $300).
- **Replace the rear sway bar immediately** if compromised.
- **Budget for a full suspension refresh** (shocks, bush
Reference to driver/passenger side is for left hand drive cars, so RHD vehicles UK/Japan/Australia, etc. Please reverse the indicated. ITEM: sway bar rear, 23.6mm. There are no paint or rusting issues. 2008 2013 BMW E93 M3 Convertible Factory Rear Axle Anti-Sway Stabilizer Bar OEM: STOCK #: 40551.
Which side does this part fit?, Left Driver side, Right Passenger. Rarely, large or difficult to package items will take a day two longer. Condition: This sway bar has a diameter of 23.6mm.
Otherwise, guaranteed good working condition. This is a used original BMW part. Still not sure this part will fit your car. See the photo below for illustration.