BMW Radiator Rear Sport Automatic Transmission 675-59921

( Manufacturer Part Number: 330CI ), ( Part Type: Radiator Transmission ), ( Conditions Options: Awd ), ( Genuine Oem: Yes ), ( Ipn: 675-59921 ), ( Manufacturer Warranty: 90 Day )

Review BMW Factory Radiator Rear Sport Automatic Transmission fits 330CI 330I AWD 2017–2018

The **675-59921 Radiator (Coolant Hose Assembly) for BMW 330i (E90/E91/E92/E93) 2017 to 2018 Models with AWD, Sport Package, and Automatic Transmission** is a precision-engineered component designed to ensure optimal performance and longevity for your high-performance BMW. This radiator assembly is specifically tailored for the **N63T2 3.0L Twin-Turbo inline-six engine**, which powers the 330i models, delivering a seamless blend of power and efficiency. Crafted from high-grade materials, including durable rubber and reinforced hoses, this assembly is built to withstand the intense heat and pressure generated by the turbocharged engine while maintaining a tight, leak-free seal. The radiator s compact yet robust design accommodates the **AWD system** and **sport-tuned suspension**, ensuring unobstructed airflow and efficient heat dissipation even under demanding driving conditions. Whether you re navigating twisty roads with the sport package s precise handling or cruising at high speeds, this radiator assembly guarantees reliable cooling, protecting critical components like the turbochargers, intercoolers, and engine block from overheating. Its compatibility with the **automatic transmission (ZF 8HP)** further ensures that the cooling system operates harmoniously with the entire powertrain, preventing thermal stress and maintaining peak performance. For BMW enthusiasts who demand nothing less than perfection, this radiator is a direct-fit replacement that restores factory specifications, eliminates coolant leaks, and upholds the iconic performance and reliability that define the 330i.

### **Pros and Cons of Buying a 2017-2018 BMW 330i (675-59921) with Rear-Wheel Drive, Sport Package, and Automatic Transmission**

#### **Pros**

1. **Strong Performance and Driving Dynamics**

The 330i is powered by a 3.0L inline-six engine (N63) producing around **300 313 horsepower**, paired with an **8-speed automatic transmission** that delivers smooth, responsive shifts. The rear-wheel-drive layout enhances handling and provides a more engaging driving experience compared to front-wheel-drive alternatives.

2. **Sport Package Enhancements**

The Sport Package includes **stiffer suspension tuning, sport pedals, a sport steering wheel, and a limited-slip differential**, improving agility and cornering precision. The **adaptive dampers** (on later models) further refine ride comfort while maintaining sporty feel.

3. **Luxury and Interior Quality**

BMW s interior remains one of the best in class, with high-quality materials, a **well-designed infotainment system (iDrive 7)**, and comfortable seating. The **Nappa leather upholstery** and ambient lighting contribute to a premium feel.

4. **Reliability of the N63 Engine (Compared to Earlier Models)**

While the N63 inline-six has had some issues in earlier generations (e.g., carbon buildup, oil consumption), the **2017-2018 models saw improvements** with updated fuel injection and emissions systems. Many owners report **fewer major problems** than in the 2015-2016 era, though long-term reliability still depends on maintenance.

5. **Resale Value and Brand Prestige**

BMW 3 Series models hold their value well, and the **330i remains a desirable choice** among enthusiasts. The **RWD configuration** and **Sport Package** make it more appealing than base models, potentially fetching a better resale price.

6. **Advanced Safety Features**

Standard equipment includes **BMW s Safety Personalization, blind-spot monitoring, rear cross-traffic alert, and adaptive cruise control**, making it safer than many competitors.

7. **Aftermarket and Tuning Potential**

The N63 engine is **highly tunable**, with options for **forced induction (turbo or supercharger) or direct port injection (DPI) upgrades** to boost power. The **automatic transmission is also tunable** for quicker shifts.

---

#### **Cons**

1. **Higher Maintenance Costs**

BMWs are **notoriously expensive to maintain**, with **premium parts, specialized labor, and frequent service intervals** (e.g., valve adjustment every 60,000 90,000 miles). The **N63 engine requires careful attention** to oil changes (synthetic, high-quality) and potential **carbon cleaning** if driven aggressively.

2. **Potential Engine Issues**

- **Oil consumption** Some N63 engines, especially in early 2017 models, have been known to **burn oil**, requiring frequent top-ups.

- **Carbon buildup** Direct injection can lead to **carbon deposits on intake valves**, reducing performance if not addressed.

- **Transmission concerns** While the **8-speed auto is generally reliable**, some owners report **rough shifts or delayed engagement**, particularly in cold weather.

- **Exhaust manifold cracks** A known issue in some N63 models, requiring replacement ( $1,500 $2,500).

3. **Fuel Economy Trade-offs**

The **330i is not a fuel-efficient car** expect **around 18 22 MPG combined**, which is higher than earlier turbocharged 335is but still **less efficient than a 328i (naturally aspirated)**.

4. **Depreciation and Market Saturation**

The **3 Series is one of the most depreciating luxury cars**, and the **2017-2018 models are not exceptions**. While they hold value better than some competitors, they are **not investment-grade vehicles**.

5. **Noise and Vibration Levels**

- The **N63 engine can be loud**, especially at highway speeds, with noticeable **valvetrain noise** and **exhaust growl**.

- Some owners report **wind noise** and **road noise** through the cabin, though the Sport Package helps with handling.

6. **Limited Practicality for Daily Use**

- The **trunk space is smaller than competitors** (e.g., Audi A4, Mercedes C-Class).

- The **rear seats are tight** for adults, making long trips less comfortable.

- **Parking sensors are not standard** (must be added as an option).

7. **Software and Infotainment Quirks**

- The **iDrive 7 system can be glitchy**, with occasional **freezing or lag**.

- **Bluetooth connectivity and phone integration** may require updates or workarounds.

- **Apple CarPlay and Android Auto** are available but not as seamless as in newer models.

---

### **Conclusion**

The **2017-2018 BMW 330i (RWD, Sport Package, Auto)** is a **well-balanced blend of performance, luxury, and driving enjoyment**, making it an excellent choice for **enthusiasts who prioritize handling, power, and premium features**. However, **potential buyers should be prepared for higher maintenance costs, possible engine quirks, and a less fuel-efficient ride** than some alternatives.

- **Love BMW s driving dynamics and sporty feel**,

- **Plan to maintain it properly** (regular oil changes, carbon cleaning if needed),

- **Don t mind higher running costs**,

- **Want a car that s fun to drive but still comfortable for daily use**,

then this **330i is a strong contender**.

- **Need a more fuel-efficient or practical car**,

- **Are concerned about long-term reliability without major investments**,

- **Prefer a lower-maintenance luxury sedan**,

- **Don t want to deal with potential N63 engine issues**,

then consider alternatives like a **328i (naturally aspirated, more reliable), Audi A4, or Lexus GS 350**.

### **Final Recommendation**

You **prioritize driving enjoyment and performance** over fuel economy.

You **have a budget for maintenance** and are willing to address potential N63 issues.

You **appreciate BMW s luxury and sporty handling**.

You **plan to keep it for at least 5 7 years** with proper care.

You **need a highly fuel-efficient or practical daily driver**.

You **can t afford BMW s maintenance costs**.

You **prefer a more reliable engine** (e.g., 328i s N55).

You **don t enjoy the N63 s noise and tuning quirks**.

- **BMW 328i (N55 engine)** More reliable, better fuel economy, still sporty.

- **Audi A4 3.0T** Similar power, often better resale, more practical.

- **Lexus GS 350** More refined, lower maintenance, but less engaging to drive.

**Final Verdict:** The **330i is a fantastic choice for BMW enthusiasts who want a **balanced mix of power, luxury, and driving excitement**, but buyers must be **realistic about costs and potential issues**. If you re prepared for that, it s a **great car** just not for everyone.

Details:

BMW 330I 17-18 rear, AWD, w/sport automatic transmission with shift paddles.

part #: 330ci prices

• $141.91-$359.99

specifications ocoosys:

• for models: 330ci, 330i, Awd
• for makes: Bmw
• for years: 2017-2018
• mpn: 330ci
• part type: Radiator Transmission
• conditions options: Awd
• genuine oem: Yes
• ipn: 675-59921
• manufacturer warranty: 90 Day

general ocoosys:

• condition: Used
• Car Truck Parts Accessories > Engine Cooling Components > Radiators

returns ocoosys:

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

shipping ocoosys:

• carrier: UPS
• transit: 4-10 Days
• type: Fixed
• cost: $0.00
• service: UPS Ground, Flat Rate Freight
• class: Standard, Freight

seller ocoosys:

• city: Goldsboro, North Carolina
• rating: 99.9%
• # reviews: 6135

payments ocoosys:

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

offer ocoosys:

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

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