BMW 7636218 Automatic Transmission Gear Box N20

( Manufacturer Part Number: 7636218 ), ( Type: Automatic Transmission ), ( Oe/oem Part Number: Zfs 1090016 ), ( Items Included: Torque Converter ), ( Vintage Part: No )

Review BMW N20 Automatic Transmission Speed Gear Box Oem fits 328I F30 RWD 2012–2016

The **BMW 328i (F30) 2012-2016 N20 TwinPower Turbo Engine with RWD and Automatic Transmission (Gearbox 7636218)** represents a refined fusion of cutting-edge German engineering and dynamic driving performance, embodying BMW s signature blend of luxury, precision, and exhilarating sportiness. This transmission, a hallmark of the **Getrag GS6-53BZ** family, is meticulously engineered to deliver seamless power delivery while maintaining the iconic balance between responsiveness and smoothness that defines the F30 platform. Designed to complement the **N20 inline-four turbocharged engine**, this six-speed automatic gearbox ensures crisp, near-instantaneous shifts thanks to BMW s **Steptronic** system which adapts intelligently to driving conditions, whether cruising on the highway or navigating tight city streets. The **RWD (rear-wheel-drive) configuration** further enhances the 328i s agile handling and engaging rear-biased dynamics, making it a standout choice for enthusiasts who crave both daily practicality and spirited driving experiences.

Under the hood, the **N20 engine** a masterclass in modern turbocharged efficiency produces a robust **255 horsepower** (in the base model) while maintaining impressive fuel economy and low emissions, thanks to BMW s **Valvetronic** variable valve lift system and **direct fuel injection**. The **7636218 gearbox** is optimized to work in harmony with this powerplant, featuring a **torque converter with lock-up clutch** for improved efficiency and a **dual-clutch-like shift feel** (via BMW s **DCT-inspired Steptronic**) that minimizes lag while maximizing smoothness. The transmission s **aluminum housing** and **precision-machined internals** ensure durability, while the **automatic shift logic** can be fine-tuned via the **Drive Modes** (Comfort, Sport, and Individual) for a tailored driving experience. Whether paired with the **8-speed Steptronic** (in later F30 models) or this six-speed variant, the gearbox exemplifies BMW s commitment to blending technology with driver engagement, making it a sought-after component for both restoration projects and performance upgrades.

For those seeking a **high-performance upgrade**, this transmission can be paired with **stiffer suspension components, sport-tuned exhaust systems, or even a more aggressive **N20 tuning package**, further amplifying the 328i s already impressive capabilities. The **RWD layout** ensures that power is delivered with precision, enhancing cornering grip and throttle response, while the **automatic transmission s adaptive shift programming** allows for effortless acceleration without sacrificing the driver s connection to the road. Whether used in a **stock restoration, a track-focused build, or a daily driver with a touch of sportiness**, the **BMW 7636218 gearbox** remains a critical element in achieving the perfect balance between luxury and performance a defining characteristic of the F30 328i s legacy.

### **Pros and Cons of Buying a 2012 2016 BMW 328i (F30, N20, RWD, Automatic Transmission)**

#### **Pros**

1. **Strong Performance and Driving Dynamics**

The 328i (F30) is a well-balanced sedan with a naturally aspirated inline-6 engine (N20) producing around **255 265 hp** (depending on the year and tuning). The RWD layout provides engaging rear-wheel-drive handling, making it more fun to drive than front-wheel-drive competitors. The automatic transmission (ZF 6HP21) is smooth and reliable when well-maintained.

2. **Premium Interior and Build Quality**

BMW s interior remains one of the best in class, with high-quality materials, a well-designed dashboard, and a comfortable seating position. The **iDrive system** (though sometimes criticized for its complexity) offers a wide range of features, including navigation, Bluetooth, and climate control.

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

The N20 engine is generally robust, especially when serviced according to BMW s maintenance schedule. Many owners report **150,000 miles** with proper oil changes and minor wear-and-tear issues. The **6-speed automatic transmission** is also durable if fluid changes are done regularly.

4. **Resale Value and Brand Prestige**

BMWs hold their value better than many mainstream brands, and the 328i remains a desirable used car. The **F30 platform** is well-regarded, and the RWD version is particularly sought after by enthusiasts.

5. **Comfort and Practicality**

The 328i offers a **spacious cabin** with good rear legroom, making it more practical than some sports sedans. The suspension is well-tuned for a balance of comfort and sportiness, though it can be firm over rough roads.

6. **Aftermarket and Tuning Potential**

The N20 engine is popular among tuners, with options for **turbocharging, forced induction, and engine swaps** (e.g., S55 or B58). The F30 chassis also supports **suspension upgrades, exhaust systems, and performance chips**, allowing owners to enhance both power and handling.

7. **Safety Features**

The 328i comes standard with **BMW s safety suite**, including **stability control, multiple airbags, and advanced braking systems**. Later models (2014 ) may include **adaptive cruise control and lane departure warning**.

---

#### **Cons**

1. **Higher Maintenance Costs**

BMWs are **notoriously expensive to maintain**, especially compared to Japanese or German rivals like Toyota, Honda, or Mercedes. Common issues include:

- **Timing chain tensioner and oil pump failures** (N20 engines, though rare, can develop leaks or wear).

- **Water pump and thermostat failures** (common in N20 engines, often requiring **$1,000 repairs**).

- **Exhaust manifold cracks** (especially on early 2012 2013 models).

- **iDrive system glitches** (can be frustrating and sometimes requires a dealer visit).

- **Suspension wear** (control arms, bushings, and struts may need replacement every **80,000 100,000 miles**).

2. **Transmission Issues (If Neglected)**

While the **ZF 6HP21 automatic** is generally reliable, **delayed shifts, rough engagement, or fluid degradation** can occur if the **ATF (transmission fluid) is not changed every 60,000 100,000 miles**. A **full transmission service** (fluid flush filter) can cost **$500 $800** if done professionally.

3. **Fuel Economy is Average**

The N20 engine is **not fuel-efficient** for a luxury sedan, averaging **20 24 MPG combined** (city/highway). This is worse than many turbocharged rivals (e.g., BMW 330i, Audi A4 TFSI).

4. **Electrical Gremlins**

- **Power window regulators failing** (often a cheap fix, but annoying).

- **Infotainment system freezing or requiring resets**.

- **Sensor failures** (e.g., wheel speed sensors, camshaft sensors) that can trigger **check engine lights**.

5. **Depreciation and Insurance Costs**

While BMWs hold value better than some brands, they still **depreciate faster than Toyota or Lexus**. Insurance premiums for a **328i** will be higher than for a similar-aged Honda Accord or Mazda6.

6. **Rear Seat Comfort and Space**

While the cabin is spacious, **rear seat comfort is mediocre** the seats are firm and not as supportive as in some luxury rivals (e.g., Mercedes E-Class). Legroom is adequate, but shoulder room can feel tight for taller passengers.

7. **Noise and Wind Noise**

The F30 has been criticized for **excessive wind noise at highway speeds**, especially with the windows slightly open. The cabin can also feel **noisy at high speeds** compared to some competitors.

8. **Potential Hidden Issues**

- **Oil consumption** (some N20 engines burn oil, requiring **frequent top-ups**).

- **Coolant leaks** (water pump, thermostat housing, or radiator hoses).

- **Exhaust leaks** (common on early models due to **cracked manifolds**).

- **Suspension wear** (control arms, bushings, and sway bar links degrade over time).

---

### **Ending Conclusion & Recommendation**

#### **Who Should Buy This Car?**

**Enthusiasts who prioritize driving dynamics** over pure efficiency if you enjoy **RWD handling, a peppy engine, and BMW s driving feel**, the 328i is a great choice.

**Owners who can afford maintenance** if you re prepared for **higher repair costs** and **regular servicing**, the 328i can be a rewarding long-term project.

**Those who value brand prestige and resale value** BMWs hold their value better than many mainstream cars, and the F30 platform is well-regarded.

**Potential tuners** if you re interested in **modifying the engine or suspension**, the N20 is a solid platform for upgrades.

#### **Who Should Avoid It?**

**Budget-conscious buyers** if you can t afford **$1,000 $3,000/year in maintenance**, this is not the car for you.

**Those who prioritize fuel efficiency** the N20 is **not as economical** as turbocharged rivals (e.g., 330i, Audi A4 TFSI).

**People who dislike electrical issues** if you re sensitive to **iDrive glitches, sensor failures, or power accessory malfunctions**, consider a more reliable brand.

**Families needing maximum practicality** while decent, the **rear seat comfort and cargo space** are not as good as some luxury sedans (e.g., Volvo S60, Lexus ES).

---

### **Final Recommendation**

- You **love BMW s driving experience** and are willing to **budget for maintenance**.

- You **plan to keep it for at least 100,000 miles** with proper servicing.

- You **enjoy tuning or modifying** the car (engine, suspension, exhaust).

- You **don t mind higher insurance and fuel costs** in exchange for **premium driving dynamics**.

- You **can t afford unexpected repairs** (water pump, timing chain, transmission fluid changes).

- You **prefer a more fuel-efficient or reliable** alternative (e.g., **Audi A4 TFSI, Lexus IS 250, Genesis G70**).

- You **hate dealing with electrical issues** (iDrive, sensors, power accessories).

1. **Get a pre-purchase inspection (PPI)** from a **BMW specialist** this can uncover **hidden issues** like oil leaks, transmission wear, or electrical problems.

2. **Check maintenance records** ensure **oil changes, timing chain inspections, and transmission fluid services** were done on time.

3. **Test drive thoroughly** listen for **unusual noises** (knocking from the engine, whining from the transmission, rattles).

4. **Negotiate based on mileage and service history** a **well-documented 328i with full service records** will be worth more than one with a "do-it-yourself" maintenance history.

5. **Consider a warranty or extended service plan** if buying from a dealer, ask if they offer **limited warranties** on major components

Details:

Exhaust systems. And other oversized or heavy items. Seats/Interiors. Doors, hoods, fenders.

ENGINE: 2.0 N20 4 Cl. Core Supports. Model: F30 328I SEDAN. Complete front or rear suspension assemblies.

MILEAGE: 112,177. Transmissions. Large body panels.

part #: 7636218 prices

• $250.00-$1383.28

specifications autotransmissionsgo:

• for models: 328i, F30, Rwd
• for makes: Bmw
• for years: 2012-2016
• mpn: 7636218
• type: Automatic Transmission
• oe/oem part number: Zfs 1090016
• items included: Torque Converter
• vintage part: No

shipping autotransmissionsgo:

• service: Flat Rate Freight
• class: Freight
• cost: $0.00
• type: Fixed

payments autotransmissionsgo:

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

offer autotransmissionsgo:

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

returns autotransmissionsgo:

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

seller autotransmissionsgo:

• rating: 99.9%
• # reviews: 14535
• city: Elk River, Minnesota

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

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