SMART SMARTFOR2 Harmonic Balancer 309-50693

( Brand: Smart ), ( Manufacturer Part Number: SMARTFOR2 ), ( Part Type: Balancer ), ( Genuine Oem: Yes ), ( Ipn: 309-50693 ), ( Year: 2009 )

Review SMART Harmonic Balancer fits 2008–2015

The **OEM-quality 309-50693 Harmonic Balancer** is a precision-engineered component designed specifically for high-performance and modern vehicles, ensuring optimal engine balance, reduced vibration, and enhanced drivability. This advanced harmonic balancer is engineered to replace the stock unit in applications such as certain Ford, Lincoln, and Mercury models from the late 2000s, including the 4.6L and 5.4L V8 engines found in vehicles like the Mustang, F-150, Expedition, and Navigator. Crafted from high-strength steel and reinforced with a multi-layered rubber or elastomeric insert, this balancer is built to withstand the extreme forces generated by high-revving engines while maintaining smooth operation across the entire RPM range.

The design incorporates a robust dual-mass construction, featuring a primary outer shell that absorbs torsional vibrations and a secondary inner mass connected via precision-engineered springs. This dual-mass system effectively dampens engine harmonics, reducing harshness and prolonging the lifespan of drivetrain components such as the crankshaft, transmission, and mounts. The balancer is fitted with a high-quality rubber bushing at the mounting interface, providing a secure yet flexible connection to the engine block while minimizing wear and tear on surrounding hardware. Additionally, the unit is treated with corrosion-resistant coatings to ensure longevity in varying environmental conditions, from extreme heat to moisture exposure.

For performance enthusiasts and professional mechanics, this harmonic balancer is a direct-fit replacement that maintains factory specifications, ensuring compatibility with stock and aftermarket accessories. Its robust construction and high-quality materials make it an ideal choice for both daily drivers and high-performance applications, where reliability and smooth operation are critical. Whether installed in a stock vehicle or a modified setup, this balancer delivers the precision and durability needed to keep engines running at their best, free from the detrimental effects of excessive vibration and torsional stress.

### **Pros and Cons of Buying a Smart 309-50693 Harmonic Balancer (08-15)**

1. **OEM Quality and Compatibility** The Smart harmonic balancer is designed as an original equipment manufacturer (OEM) replacement, meaning it is engineered to match the specifications of the original part. This ensures proper fitment, balance, and performance with your vehicle s engine.

2. **Durability and Performance** Smart is a well-known brand in the automotive aftermarket, known for producing high-quality, long-lasting components. A properly installed harmonic balancer can reduce engine vibration, improve drivability, and prevent potential damage to the crankshaft or other drivetrain components.

3. **Warranty Coverage** Smart typically offers a warranty (often 12 24 months) on their harmonic balancers, providing some protection against premature failure. This can be reassuring compared to generic or no-name parts with little to no warranty.

4. **Ease of Installation** Since it is an OEM replacement, the installation process is straightforward for most mechanics or experienced DIYers. The part is designed to fit seamlessly with the existing mounting points and crankshaft.

5. **Cost-Effective Alternative to OEM** While not always cheaper than a brand-new OEM part, the Smart harmonic balancer is often more affordable than purchasing directly from the manufacturer, offering good value without sacrificing quality.

6. **Reduces Engine Stress** A failing harmonic balancer can cause excessive vibration, leading to wear on the crankshaft pulley, belts, and other components. Replacing it with a Smart part helps maintain smooth engine operation and prevents further damage.

---

1. **Potential for Counterfeit Parts** Like many aftermarket components, there is a risk of purchasing a counterfeit Smart harmonic balancer. These fakes may lack proper materials, balancing, or durability, leading to early failure. Always buy from reputable dealers or authorized sellers to avoid this issue.

2. **Installation Challenges** If the original balancer was damaged or the crankshaft pulley is worn, simply replacing the harmonic balancer may not fully resolve vibration issues. In some cases, additional work (such as replacing the crankshaft pulley or balancing the engine) may be required.

3. **Limited Availability of Parts** While Smart is a trusted brand, some specialty or older vehicle models may have limited availability for specific parts. Double-check compatibility before purchasing to ensure the part fits your exact vehicle year and engine configuration.

4. **Price Variability** The cost of the Smart harmonic balancer can vary depending on the seller, region, and whether it is a new or refurbished unit. Some dealers may mark up prices, so comparing options is advisable.

5. **DIY Installation Risks** If you are not experienced with engine work, improper installation (e.g., incorrect torque, misalignment, or failing to secure the retaining bolt properly) can lead to premature failure or further damage. Professional installation is recommended for best results.

6. **Wear and Tear Over Time** While Smart parts are durable, no harmonic balancer lasts indefinitely. Under heavy loads, extreme temperatures, or poor maintenance, it may still fail before the end of its expected lifespan.

---

The **Smart 309-50693 harmonic balancer (08-15)** is a reliable OEM-quality replacement that offers significant benefits in terms of fitment, durability, and performance. It is an excellent choice for restoring smooth engine operation and preventing potential drivetrain damage. However, the success of the replacement depends on purchasing a genuine part, ensuring proper installation, and addressing any underlying issues (such as crankshaft pulley wear).

For most drivers, the **pros outweigh the cons**, making it a strong recommendation especially when compared to cheaper, lower-quality alternatives. If you are unsure about installation, consulting a professional mechanic is advisable to avoid complications.

- **Buy from an authorized Smart dealer or a trusted aftermarket parts supplier** to avoid counterfeit products.

- **Verify compatibility** with your exact vehicle model and year before purchasing.

- **Consider professional installation** if you lack experience with engine work.

- **Monitor the balancer s performance** after installation. If vibration persists or the balancer fails prematurely, investigate further (e.g., crankshaft pulley condition).

- **Follow maintenance guidelines** to extend the lifespan of the harmonic balancer and related components.

Overall, the Smart harmonic balancer is a **sound investment** for maintaining engine health and performance.

Details:

No expedited shipping is available at this time. Ace has become well known for the full spectrum of parts European, Japanese and American vehicles. The past ten years has seen an evolution in the parts business, from basic requests to hi-tech locating services through internet. Let us show you how its done.

part #: 309-50693 price

• $103.99

specifications cranshafengin:

• for years: 2008-2015
• brand: Smart
• mpn: Smartfor2
• part type: Balancer
• genuine oem: Yes
• ipn: 309-50693
• year: 2009

returns cranshafengin:

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

payments cranshafengin:

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

seller cranshafengin:

• city: Deer Park, New York
• rating: 99.4%
• # reviews: 24635

offer cranshafengin:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: April 14, 2026

general cranshafengin:

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

shipping cranshafengin:

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

Smart 669537 Is Similar To:

• 0261210141 Bosch Crankshaft Pulse Sensor Fits Smart Mercedes Cabrio (25.4% similar) Part: 0031539528 prices...(December 16th, 2018)
• Smart 309.mb4g17 16 17 Fortwo 1.0 Rwd At Engine Crankshaft Pulley Harmonic Balancer B (42.6% similar) No expedited shipping options are available at this time...(September 16th, 2024)