BMW Convertible Front Left Right Sport Seats Set 52109145521

( Manufacturer Part Number: 9145521 ), ( Part Type: Seat ), ( Oe/oem Part Number: 52109145521, 52107251606, 52109145507, 52109145508 ), ( Color: Black ), ( Material: Plastic ), ( Country Of Origin: Germany ), ( Placement On Vehicle: Driver Side, Front, Left, Passenger Side, Right ), ( California Prop 65 Warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm. )

Review BMW Oem Convertible Front Left Right Sport Seats Black Leather Set fits E88 2008–2013

The **BMW 8145521 (08-13 E88) Convertible Front Left & Right Sport Seats Set** represents a premium upgrade for enthusiasts seeking enhanced driving dynamics, refined comfort, and a touch of sporty sophistication in their E88 6 Series Convertible. Designed exclusively for BMW s iconic roadster platform, this high-performance seat set replaces the standard front seats with meticulously engineered **sport-tuned Recaro or Alcantara-wrapped upholstery**, depending on the specific model variant, delivering a blend of aggressive styling and ergonomic precision. The seats feature **contoured, close-fitting bolsters** that cradle the driver and passenger, providing superior lateral support during spirited cornering while minimizing movement and fatigue on long drives. The **adjustable lumbar support** ensures optimal spinal alignment, reducing strain during extended journeys, while the **thickened, high-density foam padding** enhances both durability and responsiveness, making every shift in position feel deliberate and controlled. For added refinement, the seats incorporate **BMW s signature stitching patterns**, often in contrasting colors like black or red, which not only elevate the aesthetic appeal but also reinforce the sporty heritage of the E88. The **quick-release mechanism** allows for seamless installation, ensuring a clean, factory-like fit without compromising structural integrity. Whether navigating twisty backroads or cruising on open highways, this seat set transforms the cabin into a cockpit of performance, blending BMW s signature luxury with the raw engagement of a true driving experience. Ideal for those who demand more than standard comfort, this upgrade is a statement piece for owners who appreciate the marriage of sportiness and sophistication in every detail.

### **Pros and Cons of Buying a BMW 9145521 (08-13 E88 Convertible Front Left/Right Sport Seats Set)**

1. **Enhanced Comfort and Support** BMW s sport seats are designed with improved lateral support, better lumbar padding, and firmer upholstery compared to standard seats. This makes long drives more comfortable while maintaining a sporty feel.

2. **Improved Handling and Driving Dynamics** The sport seats lower the driver s center of gravity, enhancing stability and responsiveness, especially in spirited driving or convertible top-down scenarios where weight distribution matters.

3. **Premium Aesthetic** The black Alcantara or leather upholstery with red stitching and BMW s signature design elements add a high-end, sporty look to the interior, making the car feel more luxurious.

4. **Better Ergonomics for Sport Driving** The seats are contoured for better thigh and hip support, reducing fatigue during aggressive driving. The adjustable headrests also improve neck support when the top is down.

5. **Compatibility with E88 Models** This specific seat set (9145521) is designed for the BMW E88 (Z4) from 2008 to 2013, ensuring a perfect fit without modification. The part number confirms direct compatibility with the convertible s frame and seat rails.

6. **Potential Resale Value Boost** Upgrading to sport seats can make the car more appealing to buyers who prefer a sportier interior, potentially increasing its resale value compared to stock seats.

7. **Easier Installation** Since these are direct replacements, they should fit without requiring major modifications, though some basic tools and mechanical knowledge may be needed for proper installation.

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1. **Higher Upfront Cost** Sport seats are significantly more expensive than standard seats. The price for a complete set (left and right) can range from **$800 to $1,500 **, depending on condition, seller, and whether they come with the top or not.

2. **Potential Wear and Tear** Used sport seats may show signs of wear, such as cracked Alcantara, faded stitching, or sagging foam. Inspecting them closely for damage is crucial before purchasing.

3. **Installation Complexity** While not extremely difficult, removing the old seats and securing the new ones requires some mechanical skill. Improper installation could lead to rattles, misalignment, or even seat detachment while driving.

4. **Weight Consideration** Sport seats are heavier than standard seats due to reinforced structures and materials. This slight weight increase may affect the convertible s handling slightly, though the difference is minimal.

5. **Limited Availability of Original Parts** Since the E88 is no longer in production, finding genuine BMW parts (especially in good condition) can be challenging. Buying from a reputable dealer or BMW parts specialist is recommended to avoid counterfeit or mismatched parts.

6. **Potential Incompatibility with Aftermarket Mods** If the car has aftermarket seat covers, suspension modifications, or other interior changes, the sport seats may not integrate as smoothly as intended.

7. **Maintenance Over Time** Alcantara or leather upholstery requires occasional cleaning and conditioning to prevent cracking or fading. Neglecting maintenance could reduce the seats longevity.

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The **BMW 9145521 sport seats (08-13 E88 convertible)** are a worthwhile upgrade for owners who prioritize driving dynamics, comfort, and a sportier aesthetic. They offer tangible benefits in handling and ergonomics while significantly enhancing the car s interior appeal. However, the cost, potential wear, and installation effort must be carefully considered before purchasing.

If you are an enthusiast who enjoys spirited driving, values a premium feel, and is prepared for the investment, these seats are a strong recommendation. For casual drivers or those on a tight budget, the stock seats may suffice, but the sport seats will undeniably elevate the E88 s character.

- **Buy from a trusted source** (BMW parts dealer, reputable online marketplace, or a verified seller) to ensure authenticity and condition.

- **Inspect thoroughly** for damage, wear, and structural integrity before purchasing.

- **Consider professional installation** if you lack experience, as improper fitting can compromise safety and comfort.

- **Budget for maintenance** (cleaning, conditioning) to preserve the seats appearance and longevity.

- **Test drive with the new seats** to confirm they improve your driving experience as expected.

For most E88 owners who appreciate BMW s attention to detail, the sport seats are a **highly recommended upgrade** that justifies the cost with improved performance and style.

Details:

E88 Convertible ONLY. Model: BMW 135i. Large Items Shipping. Leather Boston / black LW.

All parts come with a 30-day warranty. Wear - see pictures. STOCK NUMBER: #1273.

part #: 9145521 prices

• $249.99-$1155.00

specifications seainterio:

• for models: E88
• for makes: Bmw
• for years: 2008-2013
• mpn: 9145521
• part type: Seat
• oe/oem part number: 52109145521, 52107251606, 52109145507, 52109145508
• color: Black
• material: Plastic
• country of origin: Germany
• placement on vehicle: Driver Side, Front, Left, Passenger Side, Right
• california prop 65 warning: Motor Vehicles California Requires The Following Notice, Oils And Fluids, Battery Posts, Terminals And Related Accessories Which Contain Lead And Lead Compounds And Other Chemicals Known To The State Of California To Cause Cancer, Birth Defects And Other Reproductive Harm. These Chemicals Are Found In Vehicles, Vehicle Parts And Accessories, Both New And As Replacements. When Being Serviced, These Vehicles Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm.

returns seainterio:

• time: 60 Days
• policy: Returns Accepted
• paid by: Seller

shipping seainterio:

• service: Flat Rate Freight
• cost: $295.95
• class: Freight
• type: Fixed

payments seainterio:

• other
• credit card: Diners-club
• wallet: Paypal

general seainterio:

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

seller seainterio:

• city: Oceanside, California
• rating: 100.0%
• # reviews: 17732

offer seainterio:

• best offers: True
• sold: 0
• started: March 27, 2026
• availability: In Stock
• quantity: 1
• options: Ship-to-home

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