BMW A2C15021900 Engine Motor Throttle Body

( Manufacturer Part Number: A2C15021900 ), ( Type: Throttle Body ), ( Country Of Origin: Germany )

Review BMW Engine Motor Throttle Body fits 530I 430I 330I 230I 2017–2022

The **BMW N55/N57/N63 (2017 2022) 530i/430i/330i/230i Engine Throttle Body (Part #A2C15021900)** is a precision-engineered component designed to regulate airflow into the internal combustion system of BMW s twin-turbocharged inline-six and straight-four engines, ensuring optimal performance, efficiency, and throttle response. This throttle body is part of the **N55 (B58) 2.0L twin-turbo inline-four** found in the 230i/330i, as well as the **N57 (B58) 3.0L twin-turbo inline-six** in the 430i, and the **N63 (S63) 4.4L twin-turbo V8** in the 530i, all of which share a common throttle body architecture tailored for high-revving, turbocharged applications. Crafted from high-grade materials, including durable plastic and reinforced metal components, this throttle body features a **drive-by-wire (DBW) system** with integrated sensors to monitor throttle position, airflow, and engine load, allowing seamless integration with the vehicle s ECU for precise fuel delivery and power modulation.

The **A2C15021900 throttle body** incorporates a **dual-wastegate turbocharging setup**, meaning it must handle the aggressive airflow demands of both the high-pressure and low-pressure turbos, which require a robust and responsive throttle mechanism. Its **electronic throttle control (ETC) system** eliminates mechanical linkages, reducing wear and improving reliability while enabling advanced features like launch control, adaptive cruise control, and dynamic shift programming. The throttle body is also equipped with **temperature-resistant seals and gaskets** to prevent leaks under the high-pressure conditions generated by forced induction, ensuring consistent performance across a wide operating range. For the **N63 V8 models**, the throttle body is further optimized with **larger airflow passages** to accommodate the increased displacement and torque output, while still maintaining precise control for both daily driving and spirited acceleration.

This component is a **direct-fit replacement** for OEM failures, common in high-mileage or performance-modified vehicles, where wear on the throttle body actuator, sensors, or internal mechanisms can lead to symptoms such as **hesitation, rough idle, reduced power, or erratic throttle response**. The **A2C15021900** is compatible with both **aftermarket and OEM turbocharged BMW engines** from the F20/F21/F22/F23/F24/F30/F31/F34/F35/F36/F40/F42/F43/F45/F46/F54/F56/F80/F81/F82/F87/F88/F90/F91/F92/F93/F97/F98** platforms, making it a versatile upgrade for enthusiasts seeking to restore factory performance or enhance their vehicle s drivability. When installed, it pairs seamlessly with the **N55/N57/N63 fuel injectors, turbochargers, and intercoolers**, ensuring that airflow is properly metered for optimal combustion efficiency. Whether replacing a worn-out OEM unit or upgrading to a high-performance variant, this throttle body is a critical component for maintaining the **smooth, linear, and responsive throttle characteristics** that define BMW s twin-turbocharged engines.

### **Pros and Cons of Buying a BMW A2 (C150) 2017 2022 with a 530i/430i/330i/230i Engine (N20/N26/N55/N57) and Throttle Body Issues**

#### **Overview**

The BMW A2 (C150) is a compact luxury crossover with a strong brand reputation, but its small size and certain engine configurations come with trade-offs. The **N20 (230i), N26 (330i), N55 (430i), and N57 (530i)** engines are well-regarded for performance and efficiency, though they have known weaknesses, particularly in the **throttle body and turbocharger reliability**. Below is a detailed breakdown of the key advantages and disadvantages.

---

### **Pros**

#### **1. Engine Performance and Efficiency**

- Lightweight and efficient, producing **184 258 hp** depending on tuning.

- Good fuel economy ( 25 30 MPG combined) for a compact SUV.

- Responsive turbocharged engine with decent power delivery.

- More power ( 306 hp) than the N20, making it more engaging.

- Still efficient ( 24 28 MPG combined) for its class.

- **300 335 hp**, smooth power delivery, and strong low-end torque.

- One of the most refined BMW engines, with a natural aspiration option (N55NLA) that avoids turbo lag.

- Decent fuel economy ( 20 25 MPG combined) for a V6.

- **382 hp**, aggressive performance, and a sportier feel.

- More thirsty ( 18 22 MPG combined) but still competitive for a luxury SUV.

- Precise steering, well-tuned suspension (adjustable in some trims), and engaging handling for a small SUV.

#### **2. BMW Brand Prestige and Resale Value**

- **Strong brand recognition** BMW owners often enjoy a sense of luxury and performance.

- **Resale value holds up better than many competitors** (e.g., Audi Q2, Mercedes GLA) due to demand for BMWs.

- **Dealership service network** is extensive, though parts can be expensive.

#### **3. Practicality for a Compact SUV**

- **50.6 cu. ft. cargo space** (expandable to 60 cu. ft. with seats folded).

- **Three-row seating option (2020 ) with 7-passenger capacity**, making it versatile for families.

- **Good ground clearance (170 mm / 6.7 in)** for minor off-road or snow conditions.

- **iDrive 7/8 infotainment** (depending on year), available **head-up display, adaptive cruise, and parking sensors**.

- **Available wireless Apple CarPlay/Android Auto** (from 2020 onward).

#### **4. Reliability Improvements Over Older BMWs**

- **Later model years (2020 2022) have fewer early-life issues** compared to the 2017 2018 A2s.

- **Engine management and turbo systems were refined** in later iterations.

- **Transmission (ZF 8HP automatic) is smooth and durable** if maintained properly.

#### **5. Potential for Modifications and Tuning**

- **N20/N26 engines are tuner-friendly** (e.g., **BMW Tuning, JB4, or aftermarket turbos** can significantly increase power).

- **N55/N57 V6s can be upgraded** with better turbos, intercoolers, and exhaust for improved performance.

- **Throttle body issues can sometimes be mitigated** with aftermarket upgrades (e.g., **spray bars, larger throttle bodies**).

---

### **Cons**

#### **1. Throttle Body and Turbocharger Reliability Issues**

- **Carbon buildup on throttle bodies** causes **rough idle, stalling, or hesitation**, especially after long periods of inactivity.

- **Turbocharger failures** (N20/N26) can occur due to **oil starvation or poor maintenance**, leading to **exhaust leaks, loss of power, or catastrophic failure**.

- **N55/N57 V6s are more robust** but still prone to **turbo lag** (though less severe than the N20/N26) and **oil consumption issues** in some cases.

- **Regular throttle body cleaning** (every 30,000 50,000 miles) can prevent buildup.

- **Using high-quality synthetic oil (5W-30 or 5W-40)** and changing it **every 5,000 7,500 miles** (or as BMW recommends).

- **Avoiding short trips** (which don t allow the turbo to reach optimal temperature).

- **Replacing the throttle body** ( $500 $1,000 parts labor) if carbon buildup is severe.

#### **2. Small Size and Practical Limitations**

- **Legroom is tight for adults** in the second row, making long trips uncomfortable.

- **Third-row seating (2020 ) improves space but still feels cramped** compared to larger SUVs (e.g., X3, Q5).

- Not suitable for serious towing (e.g., trailers, boats).

- **No official AWD/4WD option** (xDrive is part-time AWD, not full-time).

- **Ground clearance is decent but not off-road capable** (sticks to paved roads and light trails).

#### **3. High Maintenance and Repair Costs**

- **BMW parts and labor are expensive** expect **$100 $200/hour for shop work** and **premium pricing on OEM parts**.

- **Water pump failures** (especially in N55/N57 engines, requiring a **$1,500 repair**).

- **Transmission solenoid failures** (ZF 8HP can develop **rough shifting or delayed engagement**).

- **Suspension wear** (struts, bushings, and control arms degrade faster than expected).

- **Electrical gremlins** (sensor failures, iDrive glitches, infotainment lag).

- **Insurance costs are higher** than for non-luxury SUVs.

#### **4. Fuel Economy Trade-Offs for Performance**

- **530i (N57) averages 18 22 MPG**, making it less practical for daily commuting.

- **330i (N26) and 430i (N55) are better** ( 24 28 MPG), but still not as efficient as a diesel or hybrid.

- **Diesel option (N47) was discontinued**, leaving only turbocharged engines.

#### **5. Build Quality and Interior Durability**

- **Plastic-heavy interior** feels less premium than larger BMWs (X3, X5).

- **Sunroof seals can leak** in rain.

- **Door panels and trim wear out faster** than expected (e.g., **cracking plastic, loose buttons**).

- **Rear cargo area has thin floor mats**, leading to **dents and scratches** over time.

#### **6. Resale Depreciation (Despite Strong Initial Value)**

- **BMWs depreciate faster than some competitors** (e.g., Toyota RAV4, Honda CR-V).

- **High maintenance costs reduce long-term value**, especially if major repairs are needed.

---

### **Engine-Specific Considerations**

**Engine** **Pros** **Cons**

------------ ---------- ----------

**N20 (230i)** Lightweight, efficient, tuner-friendly Throttle body carbon buildup, turbo reliability issues, weak power

**N26 (330i)** More power than N20, still efficient Similar turbo/throttle body issues as N20, higher stress on internals

**N55 (430i)** Smooth V6, natural aspiration option, strong

Details:

2017 20 BMW 530I, 2018 20 X3, 2019 20 X4, 2019 Z4. Please review all the pictures and read carefully. 2018 20 530e 330e. FOR SALE IS: Throttle Body.

PART NUMBER: A2C15021900. This is an original part oem not aftermarket. FITS: 2017 22 BMW 230I, 330I, 440i. May be a little dusty from storage use and have few minor scratches.

part #: a2c15021900 prices

• $45.00-$110.00

specifications throobo:

• for models: 530i, 430i, 330i, 230i
• for makes: Bmw
• for years: 2017-2022
• mpn: A2c15021900
• type: Throttle Body
• country of origin: Germany

seller throobo:

• rating: 98.1%
• # reviews: 6321
• city: Rancho Cordova, California

shipping throobo:

• type: Fixed
• transit: 3-6 Days
• service: USPS Ground Advantage
• cost: $11.00
• class: Standard
• carrier: USPS

offer throobo:

• started: June 5, 2026
• options: Ship-to-home
• availability: In Stock
• best offers: True
• quantity: 1
• sold: 0

payments throobo:

• wallet: Paypal
• other
• credit card: Discover

general throobo:

• Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies
• condition: Used

returns throobo:

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

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