1. Engine Crankshafts Products
  2. sku: 20432592741315752
  3. BFO 4L6DM9

BFO 4L6DM9 Crankshaft Pulley Harmonic Balancer Xdrive 328D/328D XDRIVE/X3 2.0L

fits model: 328d, X3. make: Bmw. year: 2014–2018.

4l6dm9 Bfo Crankshaft Pulley Harmonic Balancer For Bmw 328d/328d Xdrive/x3 2.0l 2014-2018

( Brand: Bfo ), ( Manufacturer Part Number: 4L6DM9 ), ( Application: For Bmw 1ser E81 E87 116d 118d 120d, For Bmw 1 Coupe E82 118 120d, For Bmw 1 Convertible E88 118 120d, For Bmw 3 E90 316d 318 320d, For Bmw 3 Touring E91 318d 320d, For Bmw 3 Coupe E92 320d Xd, For Bmw 3 Convertible E93 320d 2007-, For Bmw 5 E60 520d 2007-2010, For Bmw X1 E84 Sdrive Xdrie 18d 20d, For Bmw X3 E83 Xdrive 18d 2008-, For Bmw X3 E83 2.0d 2007- ), ( Bundle Description: No ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Country Of Origin: China ), ( Engine Code: N47 D20 A N47 D20 C ), ( Fitting Notes: 4 Cylinder Diesel Only ), ( Important Notice: Pick Up Service Is Not Available. ), ( Manufacturer Warranty: No Warranty ), ( Note: No Instruction Included ), ( Pulley/tensioner Type: Pulley ), ( Reference Oe/oem Number: 11237823191, 11237799153, 1123 7797 995, 11237797995, 11 23 7 799 153, 11 23 7 797 995, 11 23 7 823 191, 1123 7799 153, 1123 7823 191 ), ( Type: Crankshaft Pulley ), ( Unit Quantity: 1pcs ), ( Unit Type: Unit )

Review BFO Crankshaft Pulley Harmonic Balancer Bmw 328d/328d Xdrive/x3 2.0l fits 328D X3 2014–2018

The **BFO 4L6DM9 Crankshaft Pulley and Harmonic Balancer Assembly** is a precision-engineered replacement part designed specifically for BMW s 2.0L inline-4 turbocharged engines found in the **328d, 328d xDrive, and X3 (N55/N57) models from 2014 through 2018**. This high-performance component is meticulously crafted to restore optimal balance, reduce vibration, and ensure seamless operation of the crankshaft assembly, which is critical for maintaining engine longevity and performance. The pulley and harmonic balancer work in tandem to dampen torsional vibrations generated during engine operation, preventing premature wear on the timing belt, water pump, and other drivetrain components. Engineered with **high-grade steel and advanced rubber compounds**, this balancer features a robust, reinforced design to withstand the demanding torque and RPM demands of BMW s turbocharged engines, particularly in high-stress applications like aggressive driving, towing, or extended periods under load. The **precision-machined crankshaft pulley** ensures perfect alignment with the timing belt system, minimizing slippage and maximizing efficiency, while the integrated harmonic balancer incorporates a **multi-layered rubber insert** that absorbs vibrational energy, reducing noise and preventing catastrophic failure of the crankshaft or connected components. Whether replacing a worn-out original equipment part or upgrading for enhanced durability, this BFO component is built to meet or exceed OEM specifications, offering a reliable, long-lasting solution that restores factory-level performance and reliability. Ideal for both professional mechanics and DIY enthusiasts, the **4L6DM9 assembly** is a direct-fit replacement that simplifies installation with clear mounting features and compatible bolt patterns, ensuring a hassle-free upgrade for BMW owners seeking to maintain their engine s peak condition.

### **Pros and Cons of Buying a BFO 4L6DM9 Crankshaft Pulley/Harmonic Balancer for BMW 328d/328d xDrive/X3 (2014 2018) 2.0L**

#### **Pros:**

1. **OEM Replacement Quality** BFO is a reputable aftermarket supplier that produces parts designed to meet or exceed OEM specifications. Their harmonic balancers are built with high-quality materials, including steel and rubber compounds, to ensure durability and smooth operation.

2. **Compatibility** The 4L6DM9 part is specifically engineered for the N57 2.0L diesel engine found in the BMW 328d, 328d xDrive, and X3 (2014 2018). This reduces the risk of fitment issues compared to generic or poorly matched replacements.

3. **Reduced Vibration and Noise** A failing harmonic balancer can cause excessive vibration, rattling, or even a loud clunking noise, particularly under acceleration or at idle. A new BFO unit should eliminate these symptoms, improving drivability and engine smoothness.

4. **Prevents Further Damage** A cracked or worn harmonic balancer can lead to internal engine damage if the crankshaft pulley shatters. Replacing it proactively avoids costly repairs to the timing belt, water pump, or other components.

5. **Warranty Coverage** BFO typically offers warranties on their products, providing peace of mind against premature failure. This is especially useful if the part is installed by a professional shop.

6. **Easier Installation** The BFO harmonic balancer is designed for straightforward installation, requiring only basic tools. Many users report that it fits securely without modification, though some may need to adjust tensioner or belt alignment.

7. **Cost-Effective Alternative to OEM** While not an exact OEM part, the BFO unit is significantly cheaper than purchasing a genuine BMW harmonic balancer, offering a balance between quality and affordability.

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#### **Cons:**

1. **Aftermarket Reliability Concerns** While BFO is a trusted brand, aftermarket parts can still vary in quality compared to OEM components. Some users report that cheaper harmonic balancers may wear out faster, especially under high stress (e.g., aggressive driving or heavy loads).

2. **Potential for Misalignment** If the installation is not done carefully, the new harmonic balancer may not align perfectly with the crankshaft or timing belt. This can lead to premature wear on the belt or tensioner, requiring additional maintenance.

3. **Limited Long-Term Data** Since the N57 engine is no longer in mass production, long-term field data on the BFO balancer s lifespan is limited. Some owners may experience issues after 50,000 100,000 miles, though this varies by driving conditions.

4. **Requires Professional Installation** While the part itself is relatively simple to install, improper handling can damage the crankshaft pulley or adjacent components. If unsure, consulting a BMW specialist or diesel mechanic is advisable.

5. **Compatibility with Modifications** If the vehicle has been modified (e.g., turbo upgrades, exhaust tweaks, or engine tuning), the harmonic balancer may need to withstand higher stresses. In such cases, a more robust OEM or high-performance aftermarket part might be preferable.

6. **Potential for Counterfeit Parts** Purchasing from untrusted sellers (e.g., eBay, Amazon, or unknown online marketplaces) increases the risk of receiving a fake or low-quality BFO part. Always buy from authorized dealers or reputable suppliers.

7. **Additional Maintenance May Be Needed** Some users report that replacing the harmonic balancer is a good opportunity to inspect and replace the timing belt, water pump, and tensioner even if they appear fine. This adds to the overall cost but prevents future failures.

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### **Conclusion and Recommendation**

The **BFO 4L6DM9 harmonic balancer is a strong, cost-effective choice** for BMW 328d/328d xDrive/X3 (2014 2018) owners experiencing vibration, noise, or visible wear. It offers **OEM-like quality at a fraction of the cost**, making it ideal for those seeking a reliable replacement without the premium price of genuine parts.

**However, it is not without trade-offs:**

- **Aftermarket parts may not last as long as OEM** in extreme conditions.

- **Proper installation is critical** cutting corners can lead to further issues.

- **Buying from reputable sources** is essential to avoid counterfeit products.

**Recommendation:**

- **If the primary symptom is vibration or a rattling noise**, the BFO balancer is a **safe and practical upgrade** that will resolve the issue and protect the engine.

- **If the vehicle has high mileage or aggressive driving habits**, consider pairing the replacement with a **timing belt and water pump refresh** (every 60,000 100,000 miles for N57 engines).

- **For maximum longevity**, some owners opt for **OEM or high-end aftermarket alternatives** (e.g., Fel-Pro, AEM) if budget allows.

- **Always install the part correctly** follow BMW service manuals or consult a professional if unsure.

**Final Verdict:** The BFO 4L6DM9 harmonic balancer is **a well-regarded, budget-friendly solution** for this application, provided it is sourced from a trusted supplier and installed properly. For most owners, it will eliminate noise, reduce vibration, and prevent catastrophic failure making it a **recommended choice** for the described vehicles.

Details:

OEM Reference Number. Fast Shipping. Product Crankshaft Pulley Harmonic Balancer for BMW 328D/328d xDrive/X3 2.0L 2014 -2018. For BMW X1 E84 xDrive 18d 2009.

Guaranteed Fitment Always the correct part. 7th, After Apr. Telephone number. 11 23 7 799 153, 797 995, 823 191.

specifications cranshafengin:

  • for models: 328d, X3
  • for makes: Bmw
  • for years: 2014-2018
  • brand: Bfo
  • mpn: 4l6dm9
  • application: For Bmw 1ser E81 E87 116d 118d 120d, For Bmw 1 Coupe E82 118 120d, For Bmw 1 Convertible E88 118 120d, For Bmw 3 E90 316d 318 320d, For Bmw 3 Touring E91 318d 320d, For Bmw 3 Coupe E92 320d Xd, For Bmw 3 Convertible E93 320d 2007-, For Bmw 5 E60 520d 2007-2010, For Bmw X1 E84 Sdrive Xdrie 18d 20d, For Bmw X3 E83 Xdrive 18d 2008-, For Bmw X3 E83 2.0d 2007-
  • bundle description: No
  • california prop 65 warning: California Prop 65 Warning
  • country of origin: China
  • engine code: N47 D20 A N47 D20 C
  • fitting notes: 4 Cylinder Diesel Only
  • important notice: Pick Up Service Is Not Available.
  • manufacturer warranty: No Warranty
  • note: No Instruction Included
  • pulley/tensioner type: Pulley
  • reference oe/oem number: 11237823191, 11237799153, 1123 7797 995, 11237797995, 11 23 7 799 153, 11 23 7 797 995, 11 23 7 823 191, 1123 7799 153, 1123 7823 191
  • type: Crankshaft Pulley
  • unit quantity: 1pcs
  • unit type: Unit

returns cranshafengin:

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

general cranshafengin:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

shipping cranshafengin:

  • carrier: FedEx
  • class: Standard
  • transit: 3-9 Days
  • service: FedEx Ground / FedEx Home Delivery
  • cost: $0.00
  • type: Fixed

payments cranshafengin:

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

offer cranshafengin:

  • best offers: True
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • quantity: 10
  • started: May 18, 2026

seller cranshafengin:

  • city: Rowland height, California
  • rating: 99.8%
  • # reviews: 14132
for models: 328d, x3, for makes: bmw, for years: 2014-2018, application: for bmw 1ser e81 e87 116d 118d 120d, for bmw 1 coupe e82 118 120d, for bmw 1 convertible e88 118 120d, for bmw 3 e90 316d 318 320d, for bmw 3 touring e91 318d 320d, for bmw 3 coupe e92 320d xd, for bmw 3 convertible e93 320d 2007-, for bmw 5 e60 520d 2007-2010, for bmw x1 e84 sdrive xdrie 18d 20d, for bmw x3 e83 xdrive 18d 2008-, for bmw x3 e83 2.0d 2007-, bundle description: no, california prop 65 warning: california prop 65 warning, country of origin: china, engine code: n47 d20 a n47 d20 c, fitting notes: 4 cylinder diesel only, important notice: pick up service is not available., manufacturer warranty: no warranty, note: no instruction included, pulley/tensioner type: pulley, reference oe/oem number: 11237823191, 11237799153, 1123 7797 995, 11237797995, 11 23 7 799 153, 11 23 7 797 995, 11 23 7 823 191, 1123 7799 153, 1123 7823 191, type: crankshaft pulley, unit quantity: 1pcs, unit type: unit,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 20432592741315752,
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