1. Engine Crankshafts Products
  2. sku: 19029611281307721
  3. FORD MUSTANG

FORD 309-00700 Harmonic Balancer 5.0L

fits model: Mustang. make: Ford. year: 2015–2017.

309-00700 Ford Harmonic Balancer 5.0l Fits 15-17 Mustang 3858271

( Part Type: Balancer ), ( Conditions Options: 5.0l Runs ), ( Genuine Oem: No ), ( Ipn: 309-00700 ), ( Year: 2016 )

Review FORD Harmonic Balancer 5.0l fits MUSTANG 2015–2017

The **Ford 309-00700 Harmonic Balancer** is a precision-engineered component designed exclusively for the **5.0L Coyote engine** found in **2015 2017 Ford Mustang** models, including the iconic **Shelby GT500** and standard V8 variants. This high-performance harmonic balancer serves as the critical interface between the crankshaft and the engine s accessory drive system, absorbing vibrations and ensuring smooth operation while maintaining optimal power delivery. Crafted from **high-strength steel** and reinforced with a **multi-layered rubber damping system**, this balancer is engineered to withstand the intense torque and RPM demands of the Coyote engine, which produces up to **460 horsepower** in its most powerful configurations. Its **precision-balanced design** minimizes engine shake, reduces wear on related components like the timing chain and oil pump, and helps prevent costly damage from excessive vibration, particularly under high-load conditions such as aggressive acceleration or sustained high-speed cruising. The **309-00700** is a direct replacement for the original equipment (OEM) part, featuring the same **1.5-inch bolt pattern** and **10mm mounting bolts**, ensuring a seamless fit with minimal modifications required. Built to meet or exceed Ford s stringent quality standards, this harmonic balancer is a vital upgrade for enthusiasts seeking to restore stock performance, eliminate annoying engine vibrations, or prepare their Mustang for **high-performance tuning**, such as forced induction or engine swaps. Whether restoring a classic Mustang or maintaining a high-performance vehicle, the **309-00700** is an essential component that contributes to a quieter, more refined, and long-lasting engine operation.

### **Pros and Cons of Buying a Ford 309-00700 Harmonic Balancer (5.0L, 2015 2017 Mustang)**

#### **Pros:**

1. **Direct OEM Replacement** This is a genuine Ford part, ensuring a perfect fit and compatibility with your 5.0L Coyote engine. It will not require additional modifications or adjustments.

2. **High-Quality Material** Ford s harmonic balancers are typically made from durable steel and rubber compounds, designed to handle the torque and vibrations of the 5.0L engine under normal driving conditions.

3. **Reliability** As an OEM part, it should provide long-term performance without premature failure, assuming proper installation and maintenance.

4. **Warranty Coverage** Purchasing directly from Ford or an authorized dealer may include a warranty, offering peace of mind against defects.

5. **Prevents Engine Damage** A failing harmonic balancer can lead to severe engine damage if it shatters. Replacing it proactively avoids costly repairs.

6. **Mainstream Availability** Since the 5.0L Mustang is still relatively common, finding this part is easier than aftermarket alternatives that may not be as widely stocked.

#### **Cons:**

1. **Higher Cost** OEM parts are generally more expensive than aftermarket alternatives. The 309-00700 harmonic balancer may cost significantly more than a third-party option.

2. **Potential for Counterfeit Parts** If purchasing from a non-authorized seller, there is a risk of receiving a fake or low-quality part that could fail prematurely.

3. **Limited Customization** Unlike aftermarket balancers, this OEM part does not offer performance upgrades (e.g., lighter weight, stiffer construction) that some enthusiasts seek.

4. **Installation Complexity** Replacing a harmonic balancer requires removing the harmonic damper pulley, which may involve disconnecting accessories like the alternator, power steering pump, or A/C compressor. This can be labor-intensive for DIYers without proper tools.

5. **Potential for Overkill** If your engine is heavily modified (e.g., high horsepower builds), an OEM balancer may not be sufficient for the increased stress, potentially leading to failure sooner than expected.

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### **Conclusion**

The **Ford 309-00700 harmonic balancer** is an excellent choice if you prioritize **reliability, OEM quality, and a direct replacement** for your 5.0L Mustang. It is ideal for stock or lightly modified engines where durability and warranty coverage matter. However, if you are on a budget or seeking performance benefits, aftermarket alternatives (from reputable brands like **Crankshaft, Jegs, or ACDelco**) may offer comparable or superior options at a lower cost.

For most **stock or mildly modified 5.0L Mustangs (under 450 hp)**, the OEM balancer is a safe and practical choice. If your engine is heavily modified or you are concerned about longevity under extreme stress, consider consulting a performance specialist to determine whether an aftermarket balancer would be more appropriate.

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### **Recommendation:** - **Buy the OEM balancer (309-00700) if:**

- You want a guaranteed fit and warranty.

- Your engine is stock or lightly modified.

- You prefer the simplicity of an OEM part without performance compromises.

- **Consider an aftermarket alternative if:**

- You are on a tight budget and can find a high-quality aftermarket balancer (e.g., **Jegs 100000, Crankshaft, or ACDelco Performance**).

- Your engine is heavily modified (high horsepower builds), as aftermarket balancers may offer better durability.

- You want to explore lighter or stiffer balancers for performance tuning.

Always ensure the part is **new and from a trusted source** to avoid counterfeit or damaged inventory. If in doubt, consult a mechanic or Ford specialist for guidance.

Details:

Domestically, items are shipped with UPS Ground. 90 day warranty only on ENGINES AND TRANSMISSIONS. MUSTANG 15-17 5.0L. Price for residential address delivery may be quoted individually and usually is twice as much commercial.

Warranty Standard no-hassle 30-day warranty on most parts.

part #: 309-00700 price

  • $129.99

specifications cranshafengin:

  • for models: Mustang
  • for makes: Ford
  • for years: 2015-2017
  • part type: Balancer
  • conditions options: 5.0l Runs
  • genuine oem: No
  • ipn: 309-00700
  • year: 2016

seller cranshafengin:

  • city: San Bernardino, California
  • rating: 99.4%
  • # reviews: 9988

shipping cranshafengin:

  • type: Fixed
  • transit: 3-8 Days
  • class: Standard
  • service: Standard
  • cost: $0.00

general cranshafengin:

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

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  • wallet: Apple-pay
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offer cranshafengin:

  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • started: February 24, 2026
  • best offers: True
  • availability: In Stock

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  • paid by: Seller
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  • policy: Returns Accepted
for models: mustang, for makes: ford, for years: 2015-2017, part type: balancer, conditions options: 5.0l runs, genuine oem: no, year: 2016,
manufacturer: ford, category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19029611281307721,
Ford 3858271 Is Similar To:
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1 offer $129.99 USD
  • Used. Offer #1 priced at $129.99 + $0.00 shipping estimate = $129.99* total. MUSTANG 15-17 5.0L.FREE SHIPPING

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