BMW 52107246799 Front Left Seat Backrest 3-SERIES 4DR

( Manufacturer Part Number: 52107246799 ), ( Part Type: Seat Backrest )

Review BMW 3-series 4dr Front Left Seat Backrest Black Leather Oem fits E90 E91 2009–2011

The **BMW 3-Series (E90/E91) 52107246799 front left seat backrest (2009 2011 models)** is a meticulously crafted, high-performance replacement part designed to restore the premium comfort and structural integrity of your vehicle s interior. This genuine BMW component is engineered to match the exact specifications of the original equipment, ensuring a seamless fit and uncompromising quality. Crafted from durable, high-grade materials, the backrest features a robust yet ergonomic design, incorporating reinforced stitching and a resilient upholstery blend that combines both functionality and luxury. The seatback is built to withstand the demands of daily driving, providing consistent support and durability over time, while maintaining the signature BMW aesthetic with its sleek, contoured shape and precise panel alignment. Whether your vehicle is a sporty 335i, a refined 328i, or a versatile 325i, this part is designed to integrate flawlessly with the existing seat frame, ensuring optimal functionality and a polished appearance. Ideal for restorers, mechanics, or owners seeking to upgrade or repair their interior, this backrest is a testament to BMW s commitment to precision engineering, offering a perfect blend of performance and elegance.

### **Pros and Cons of Buying a 2009 2011 BMW E90/E91 521i (072467999) Front Left Seat Backrest**

#### **Pros**

1. **Strong Engine and Performance**

The 521i is powered by a **3.0L inline-6 (N52/N52B30) engine**, producing around **225 231 horsepower** (depending on the year and tuning). This provides a balanced mix of power and efficiency, making it suitable for both city driving and highway cruising. The engine is reliable if well-maintained, with a naturally aspirated setup that avoids the complexity of forced induction.

2. **Premium Interior and Build Quality**

BMW s E90/E91 generation (2005 2010) is known for its **high-quality materials, ergonomic design, and refined cabin**. The 521i comes with **leather upholstery, wood/aluminum trim, and a well-appointed dashboard**, making it feel luxurious compared to many competitors. The **iDrive system (first-gen, 2007 2009)** is intuitive for its time, though it can be slow and lacks modern connectivity.

3. **Good Handling and Driving Dynamics**

The E90/E91 platform is **well-balanced**, with a **short wheelbase (E90) or slightly longer (E91 Touring)**, making it nimble for a sedan/coupe. The **rear-wheel-drive layout** enhances driving engagement, and the **adjustable suspension (if equipped with Sport Package)** improves road feel. The steering is **precise and responsive**, contributing to a sporty feel.

4. **Reliability (If Maintained Properly)**

The **N52 engine** is robust if serviced regularly. Common issues (like **valve cover gaskets, oil consumption, or timing chain stretch**) can be mitigated with **proper maintenance**. Many examples with **under 100,000 miles** run reliably if the **transmission (ZF 6HP21), cooling system, and suspension** are in good condition.

5. **Resale Value and Brand Prestige**

BMWs hold their value reasonably well, especially well-documented examples. The **521i is a solid choice** in the used market, offering a **premium alternative to German rivals (Audi A4, Mercedes E-Class)** or luxury sedans (Lexus GS, Acura TL).

6. **Customization and Aftermarket Support**

The E90/E91 has a **thriving aftermarket**, with **tuning options (MHD, BMS, JB4), suspension upgrades (Eibach, H&R), and performance parts** available. This makes it easier to **modify for better handling or power** if desired.

7. **Comfortable Ride (Standard Suspension)**

The **standard suspension** is **softer than later models**, providing a **smoother ride on highways** compared to sportier BMWs. The **E91 Touring** variant also offers **more practicality** with a **longer wheelbase and rear hatch**.

---

#### **Cons**

1. **Aging Technology and Infotainment**

The **first-gen iDrive (2007 2009)** is **slow, lacks Bluetooth, and has limited USB connectivity**. Later models (2010 ) improved this, but earlier 521is may require **aftermarket head units** for modern features. **Parking sensors and backup cameras** are **rare in this generation**, making parking difficult.

2. **Common Maintenance Issues**

- **Oil Consumption:** The **N52 engine** can **burn oil**, especially if neglected. Regular **oil changes (every 5,000 7,500 miles)** and **top-ups** are necessary.

- **Timing Chain Stretch:** Some N52s develop **timing chain noise** over time, requiring **chain tensioner and guide replacement** ( $1,000 $1,500).

- **Water Pump Failure:** The **electric water pump** can fail, leading to **overheating**. Replacement is **costly ( $800 $1,200)**.

- **Transmission (ZF 6HP21):** While generally reliable, **shuddering or delayed shifts** can occur, especially in **hot climates**. A **transmission flush** may help.

- **Suspension Wear:** **Shocks, struts, and bushings** wear out around **80,000 100,000 miles**, requiring replacement for a **smooth ride**.

3. **Fuel Economy is Average**

The **521i gets 18 22 MPG (city/highway)**, which is **better than most American sedans** but **worse than modern hybrids or turbocharged engines**. If fuel efficiency is a priority, consider a **335i (N54) or a diesel (N57)**.

4. **Depreciation and Modern Competition**

While BMWs hold value, **newer models (F10 5-Series, G20 3-Series) offer better tech, safety, and efficiency**. If you want **modern features (Apple CarPlay, advanced safety, turbocharged power)**, a newer BMW may be worth the extra cost.

5. **Higher Running Costs**

- **Parts are expensive** (BMW dealership labor rates are high).

- **Insurance premiums** are **higher than average** due to theft risk and repair costs.

- **Tires, brakes, and fluids** (e.g., **BMW-specific coolant**) add up over time.

6. **Potential Rust Issues (Especially in Snowy Climates)**

The **E90/E91** is prone to **underbody rust**, particularly in **salted regions**. A **thorough inspection of the wheel wells, rocker panels, and subframe** is **essential** before purchase.

7. **Limited Safety Features (Compared to Modern Standards)**

- **No standard blind-spot monitoring, lane-keeping, or automatic emergency braking**.

- **Airbags and crumple zones** are good, but **modern safety tech** (like **BMW s ConnectedDrive**) is missing.

---

### **Conclusion**

- **Prioritize driving enjoyment and premium feel** over cutting-edge tech.

- **Plan to maintain it properly** (oil changes, timing chain checks, suspension refreshes).

- **Want a reliable, fun-to-drive sedan/coupe** with **good resale value**.

- **Are okay with aging infotainment** and **higher long-term costs**.

- **Need modern connectivity (Apple CarPlay, Android Auto, wireless charging)**.

- **Want better fuel economy** (consider a **335i or diesel**).

- **Prefer lower running costs** (insurance, maintenance, parts).

- **Live in a harsh climate** (salt, snow, or extreme heat can accelerate wear).

---

### **Recommendation**

**Under 100,000 miles** (preferably **under 80,000**).

**Full service history** (oil changes, timing belt/chain checks, transmission service).

**No major rust or frame damage**.

**No excessive oil consumption or transmission issues**.

**Optional: Sport Package (stiffer suspension, sport seats, Brembo brakes)**.

then it is a **great buy** for a **driver-focused, premium sedan**.

- **If you want better tech:** Buy a **2012 E90/E91 (with updated iDrive)** or a **new F10 5-Series**.

- **If you want more power:** Consider a **335i (N54) or 535i (N54)**.

- **If you want better fuel economy:** Look at a **328i (N52) or a diesel 530d (N57)**.

- **If you want lower costs:** A **used Lexus GS 350 or Acura TLX** offers similar luxury with better reliability.

The **2009 2011 521i is a fantastic used BMW** if you **inspect it thoroughly, budget for maintenance, and don t mind its age**. It s **one of the best E90/E91 models** to buy, offering a **perfect balance of power, comfort, and driving dynamics** just be prepared for **higher ownership costs** and **outdated tech**.

Details:

Which side does this part fit?, Left Driver side, Right Passenger. This is for cars with Basic Seats and will NOT fit Sport BMW Option Code S481A. Rarely, large or difficult to package items will take a day two longer. ITEM: left seat back, black leather.

Guaranteed good working condition. This seat does NOT have Seat Heating BMW Option Code S494A. See the photo below for illustration. This is a used original BMW part.

Reference to driver/passenger side is for left hand drive cars, so RHD vehicles UK/Japan/Australia, etc. Please reverse the indicated. Condition: This seat back is Black Dakota Leather BMW Upholstery Code LC The most noticeable damage is some wear on the left side bolster. The seat is in good condition.

The finish is smooth and even throughout. Details can be viewed in the photos. Still not sure this part will fit your car. 2009 2011 BMW E90 E91 3-Series 4dr Front Left Seat Backrest Black Leather OEM: STOCK #: 47655.

Otherwise, there are no major scratches, holes, or rips.

part #: 52107246799 prices

• $89.96-$105.00

specifications seainterio:

• for models: E90, E91
• for makes: Bmw
• for years: 2009-2011
• mpn: 52107246799
• part type: Seat Backrest

general seainterio:

• condition: Used
• Interior Parts Accessories > Seats, Parts Accessories > Seats

payments seainterio:

• wallet: Apple-pay
• credit card: Discover
• other

seller seainterio:

• # reviews: 2022 7
• rating: 99.8%
• city: Norristown, Pennsylvania

shipping seainterio:

• type: Calculated
• class: Standard, Expedited
• transit: 3-7 Days
• cost: $36.72
• service: UPS Ground, USPS Priority Mail, FedEx Ground / FedEx Home Delivery
• carrier: UPS, USPS, FedEx

offer seainterio:

• sold: 0
• started: April 6, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 1

returns seainterio:

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

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