BMW Gran Left Driver Roof Strip 51139478423 840 M850

( Manufacturer Part Number: 9478423 ), ( Custom Bundle: No ), ( Color: Black ), ( Fitment Type: Direct Replacement ), ( Placement On Vehicle: Left, Upper ), ( 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. ), ( Type: Trim ), ( Ipn: 51139478423 ), ( Features: Easy Installation ), ( Finish: Gloss ), ( Country Of Origin: Germany )

Review BMW Oem Gran Coupe Left Driver Side Roof Trim Strip Black fits G16 1925–2020

The **BMW G16 840i M850 Gran Coupe (2020 2025, left-hand drive)** is a masterclass in automotive engineering, blending the timeless elegance of a grand tourer with the raw, exhilarating performance of a modern supercar. This model, part of BMW s refined yet aggressive **G16 generation**, stands as a testament to the brand s ability to merge luxury, precision, and cutting-edge technology into a single, breathtaking package. The **840i M850 Gran Coupe** is the pinnacle of BMW s **M Division** collaboration, featuring a **4.4-liter twin-turbocharged V8 engine** that produces a staggering **625 horsepower** and **553 lb-ft of torque**, propelling the vehicle from 0-60 mph in just **3.5 seconds** a performance benchmark that rivals many supercars while maintaining the composure and ride quality expected of a BMW. Under the hood, the **S152B44 engine** is paired with an **8-speed ZF Steptronic transmission**, delivering seamless gear shifts and instant throttle response, all while adhering to BMW s signature **iDrive 8 infotainment system**, which offers a sleek, intuitive interface with a **12.3-inch touchscreen**, wireless Apple CarPlay and Android Auto, and a **head-up display** that projects critical driving information directly onto the windshield.

Externally, the **840i M850 Gran Coupe** exudes a commanding presence, with its **sharp, angular bodywork** and **aerodynamically optimized design** including a **large rear spoiler** and **active aero elements** that not only enhance stability at high speeds but also give the vehicle an aggressive, sporty stance. The **left-hand drive model** features a **roof strip** (part number **9478423**) that runs along the roofline, adding a subtle yet distinctive touch of sportiness, reinforcing the Gran Coupe s performance-oriented identity. The **kidney grille**, now more pronounced than ever, is flanked by **LED matrix headlights** that adapt dynamically to road conditions, while the **19-inch or 20-inch multi-spoke alloy wheels** (depending on the trim) are available in a variety of finishes, from polished aluminum to matte black, ensuring a perfect blend of style and functionality. The **M Sport Package** further enhances the vehicle s sportiness with **red-trimmed accents**, **sport seats**, and **adjustable pedals**, while the **M Performance Package** takes it a step further with **stiffer suspension tuning**, **larger brake calipers**, and **unique front and rear bumpers** that scream "performance."

Inside, the **840i M850 Gran Coupe** is a sanctuary of luxury and sophistication, with **full Nappa leather upholstery**, **heated and ventilated front and rear seats**, and **adjustable lumbar support** for the driver and front passenger. The **M Sport Package** introduces **sport seats with M logo stitching**, **recaro-style bucket seats**, and **adjustable pedals**, while the **M Performance Package** adds **carbon fiber trim** and **M-specific steering wheel** with **ambient lighting**. The **ambient lighting system** allows drivers to customize the cabin s mood with a variety of colors, while the **ventilated and heated steering wheel** ensures comfort during long drives. The **rear seats** remain spacious and comfortable, making the Gran Coupe a practical choice for road trips while still delivering the performance of a true M car. The **sound system** is a **Harman Kardon 12-speaker premium audio setup**, delivering crystal-clear sound that enhances the driving experience, whether you're cruising on the highway or winding through the countryside.

One of the most standout features of the **G16 840i M850 Gran Coupe** is its **driving dynamics**, which strike an almost impossible balance between **refined luxury and razor-sharp handling**. The **adaptive suspension** (available with the **M Performance Package**) adjusts in real-time to road conditions, ensuring a smooth ride over bumps while maintaining exceptional stability during high-speed cornering. The **electronic differential lock (EDL)** and **xDrive all-wheel drive system** provide near-perfect traction in all weather conditions, while the **BMW Dynamic Stability Control (DSC)** and **M Dynamic Package** offer a **sport-tuned chassis** that responds with precision to driver inputs. The **steering** is **ultra-responsive**, with a **direct, weight-sensitive feel** that makes every turn feel deliberate and engaging, yet the car remains **comfortable enough for daily use**. Whether you're navigating a twisty mountain road or merging onto the highway, the **840i M850 Gran Coupe** delivers an experience that is both **thrilling and relaxing**, proving that BMW has once again redefined the boundaries of what a grand tourer can be.

For those who appreciate **exclusivity and personalization**, the **840i M850 Gran Coupe** offers a **wide range of customization options**, from **exterior colors** (including **Matte Black, Racing Red, and Deep Blue**) to **interior trims** (such as **Alcantara, carbon fiber, and wood inlays**). The **roof strip (9478423)** is just one of many **M-specific badging and trim elements** that set this model apart, making it a **true head-turner** on the road. Whether you're drawn to its **unmatched performance**, its **luxurious interior**, or its **aerodynamic sophistication**, the **G16 840i M850 Gran Coupe** is a vehicle that demands attention one that embodies the perfect fusion of **German engineering, artistic design, and uncompromising excellence**. It s not just a car; it s a **statement of intent**, a **masterpiece of modern automotive artistry**, and a **dream machine** for those who refuse to settle for anything less than the extraordinary.

### **Pros and Cons of Buying a BMW G16 840 M850 xDrive Gran Coupe (Left-Hand Drive, Roof Strip, 2020 2025)**

#### **Pros**

1. **Performance and Driving Dynamics**

- The **840 M850** is one of the most powerful BMWs ever produced, with a **4.4L twin-turbo V8** generating **625 hp (630 hp in some markets)** and **590 lb-ft of torque**. This delivers exhilarating acceleration (0-60 mph in 3.5 seconds) and a thrilling driving experience.

- The **M850 xDrive** comes with **all-wheel drive**, improving traction and stability, especially in adverse conditions.

- The **8-speed ZF Steptronic transmission** is smooth and well-tuned, with precise shift points and a manual-like paddle-shift option.

2. **Luxury and Interior Quality**

- The **Gran Coupe** body style offers a more practical alternative to the M8 Competition Coupe while retaining the same high-end interior.

- The cabin is **spacious, premium, and meticulously crafted**, with high-quality materials (Nappa leather, aluminum trim, ambient lighting, and premium wood/aluminum accents).

- **Advanced infotainment** with **iDrive 8.0** (later models may have iDrive 9.0), **12.3-inch touchscreen**, **12.3-inch digital gauge cluster**, and **wireless Apple CarPlay/Android Auto**.

- **Comfortable seating** with **adaptive suspension** (optional) and **heated/ventilated seats** (standard on higher trims).

3. **Exclusivity and Prestige**

- The **M850 Gran Coupe** is one of the most exclusive BMWs, with limited production numbers, making it a **status symbol** among luxury car enthusiasts.

- The **roof strip** (a subtle but noticeable detail) adds to its sporty aesthetic while maintaining a refined look.

4. **Safety and Technology**

- Standard **BMW Safety Personal** suite, including **adaptive cruise control, lane-keeping assist, blind-spot monitoring, and automatic emergency braking**.

- **High-quality audio** (optional **Bang & Olufsen 12-speaker system** or **Harman Kardon 16-speaker system**).

- **Advanced driver aids** like **night vision assist** (optional) and **360-degree camera** (optional).

5. **Resale Value and Brand Appeal**

- BMW M models, especially the **M8 series**, hold their value well due to their **desirability and performance reputation**.

- The **Gran Coupe** format is less common than the Coupe, which could make it more appealing to collectors in the future.

---

#### **Cons**

1. **High Cost of Ownership**

- **Fuel consumption** is poor for a V8 expect ** 12 15 MPG combined**, making it expensive to run.

- **Maintenance costs** are high due to BMW s premium pricing for parts and labor, especially for **M-specific components** (turbochargers, suspension, brakes).

- **Insurance premiums** will be significantly higher than average due to its **performance, value, and theft risk**.

2. **Size and Practicality Limitations**

- While the **Gran Coupe** is more practical than the Coupe, it s still **long and heavy** ( 5,000 lbs), which can make **parking, maneuvering, and fuel efficiency worse**.

- **Rear seat comfort** is limited best suited for short trips rather than long family hauls.

- **Trunk space** is decent but not as large as a sedan or SUV.

3. **Driving Experience Trade-offs**

- The **xDrive AWD system** can sometimes feel **too aggressive** in normal driving, leading to **oversteer or understeer** if not adjusted properly.

- The **V8 s low-end torque** makes it **very quick**, but the **high RPM nature** means it s **loud and demanding** to drive daily.

- **Ride comfort** is **firm** compared to non-M BMWs, which may not suit those who prioritize smoothness over sportiness.

4. **Depreciation and Market Risks**

- While M models hold value, **luxury performance cars depreciate faster** than standard sedans.

- **Electric and hybrid competition** (e.g., Tesla, Audi e-tron, Mercedes EQS) may reduce long-term demand for high-end V8s.

- **Recall risks** BMW has had **M-specific recalls** in the past (e.g., turbo issues, software bugs), which could lead to unexpected repairs.

5. **Potential Reliability Concerns**

- **Twin-turbo V8s** are complex and prone to **carbon buildup, turbo failure, or oil consumption issues** if not maintained properly.

- **M-specific suspension and braking systems** (e.g., **carbon-ceramic brakes**) are expensive to repair if damaged.

- **Electrical gremlins** (common in BMWs) could lead to **infotainment or sensor issues** over time.

6. **Limited Daily Usability**

- The **V8 s noise, vibration, and harshness** make it **less ideal for daily commuting** unless you enjoy driving a high-performance car.

- **Fuel costs** add up quickly expect **$100 $150 per fill-up** at $3.50/gallon.

- **Towing capacity** is decent ( 4,400 lbs), but **not as strong as an SUV**, limiting its utility for trailers or heavy loads.

---

### **Conclusion**

The **BMW G16 840 M850 xDrive Gran Coupe (2020 2025)** is a **masterpiece of luxury performance**, offering **unmatched power, exclusivity, and driving excitement**. It is best suited for **enthusiasts who prioritize performance, prestige, and a thrilling ride** over practicality and cost efficiency.

- Need a **family-friendly, fuel-efficient, or low-maintenance** vehicle.

- Prefer a **quieter, smoother, or more comfortable** daily driver.

- Are **sensitive to high ownership costs** (fuel, insurance, maintenance).

If you **love BMWs, enjoy driving a high-performance car, and can afford the lifestyle**, this is one of the **best cars money can buy**. But if you re looking for **versatility, efficiency, or long-term affordability**, you may want to consider alternatives like a **high-end sedan (e.g., Mercedes S-Class, Audi A8), a performance SUV (e.g., Porsche Cayenne Turbo, BMW X6 M), or a hybrid/electric luxury car**.

### **Recommendation**

- You **prioritize driving pleasure and exclusivity** over practicality.

- You **have a dedicated budget** for high fuel, insurance, and maintenance costs.

- You **enjoy tuning and modifying** the car (aftermarket support is strong).

- You **value BMW s brand prestige** and don t mind being a **target for thieves**.

- You **need a reliable, low-cost-to-own** luxury vehicle.

- You **rarely drive long distances** (fuel costs will add up).

- You **prefer a more refined, less aggressive ride**.

- You **can t justify the premium** over other high-performance alternatives.

**Final Verdict:** This is a **fantastic car for the right owner** one who appreciates **BMW s engineering, luxury, and performance** and can afford the **lifestyle it demands**. If you re in the market for a **daily driver**, however, you may want to explore **more balanced alternatives**.

Details:

Large Items Shipping. STOCK NUMBER: #1279. All parts come with a 30-day warranty. Model: BMW M850i drive.

G16 Gran Coupe ONLY.

part #: 9478423 prices

• $99.95-$215.99

specifications cartrimmouldings:

• for models: G16
• for makes: Bmw
• for years: 1925-2020
• mpn: 9478423
• custom bundle: No
• color: Black
• fitment type: Direct Replacement
• placement on vehicle: Left, Upper
• 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.
• type: Trim
• ipn: 51139478423
• features: Easy Installation
• finish: Gloss
• country of origin: Germany

offer cartrimmouldings:

• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock
• started: April 29, 2026

shipping cartrimmouldings:

• cost: $0.00
• type: Fixed
• service: UPS Ground
• transit: 3-7 Days
• class: Standard
• carrier: UPS

general cartrimmouldings:

• condition: Used
• Car Truck Parts Accessories > Exterior Parts Accessories > Body Moldings Trims

payments cartrimmouldings:

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

returns cartrimmouldings:

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

seller cartrimmouldings:

• # reviews: 18933
• rating: 100.0%
• city: Oceanside, California

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