1. Engine Crankshafts Products
  2. sku: 19814717859122892
  3. POWERBOND DAYCO SX-4116

POWERBOND BY DAYCO SX-4116 Engine Harmonic Balancer 5.7L V8

fits model: K25, K2500, Suburban. make: Gmc. year: 1973–1974.

Sx-4116 Powerbond By Dayco Engine Harmonic Balancer For 1973-1974 Gmc K25 K2500 Suburban 5.7l V8 Bf

( Brand: Powerbond By Dayco ), ( Manufacturer Part Number: SX-4116 ), ( Item Weight: 8.8800 ), ( Ipn: C601 54-22 ), ( Placement On Vehicle: Engine Cylinder Block ), ( Compatible Model: K25/k2500 Suburban ), ( Compatible Year: 1974 1973 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Harmonic Balancer ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Dayco Engine Harmonic Balancer ), ( Timing Marks: Yes ), ( Overall Width: 2.343 In / 59.50 Mm ), ( Hardware Included: No ), ( Ring Width: 1.299 In / 32.99 Mm ), ( Counterweight Balance: Neutral, No Counterweight ), ( Outer Ring Material: Steel ), ( Overall Outside Diameter: 6.752 In / 171.50 Mm ), ( Nose Outside Diameter: 1.762 In / 44.75 Mm ), ( Crank Bore: 1.245 In / 31.60 Mm )

Review POWERBOND BY DAYCO Engine Harmonic Balancer Gmc 5.7l V8 Bf fits SUBURBAN K25 K2500 1973–1974

The **Powerbond Dayco SX-4116 Engine Harmonic Balancer** is a premium, high-performance replacement part designed specifically for the **1973 1974 GMC K25/K2500 Suburban** equipped with the legendary **5.7L (350 cubic inch) V8 engine** featuring the **BF (Big Block) architecture**. This meticulously engineered component is crafted to restore optimal vibration control, reduce engine noise, and enhance drivability in your classic or restored vehicle, ensuring it runs with the same smooth, refined power that made these trucks legendary in their prime.

Built to exacting specifications, the **SX-4116 harmonic balancer** replaces the stock unit, which can wear out over time due to age, heat, and stress, leading to rattling, vibration, or even catastrophic failure if the rubber dampening material cracks or deteriorates. This aftermarket upgrade incorporates a **high-quality rubber insert** that provides superior elasticity and durability, effectively isolating engine harmonics and preventing unwanted vibrations from transmitting to the drivetrain or cabin. The balanced weight distribution of the **Dayco Powerbond** ensures precise rotational stability, minimizing wear on critical components like the crankshaft and connecting rods while maintaining the engine s original power delivery.

Constructed from **high-strength steel**, the SX-4116 is precision-machined to match the original dimensions and mounting points of your **BF V8**, guaranteeing a seamless fit without the need for modifications. The **rubber insert is engineered to withstand extreme temperatures**, resisting hardening or softening under the demanding conditions of a high-performance or heavily driven vehicle. Whether you re hauling heavy loads, towing, or simply enjoying the raw power of your Suburban, this harmonic balancer delivers reliable performance, reducing the risk of premature wear on the engine s internal components.

Beyond its functional benefits, the **Powerbond Dayco SX-4116** is a testament to quality craftsmanship, offering a **lifetime of service** when properly installed and maintained. It s an ideal choice for both restoration projects and daily drivers, ensuring that your **350 BF V8** continues to turn heads with its iconic growl while operating with the smoothness and efficiency of a brand-new engine. Whether you re a die-hard enthusiast or a casual owner looking to preserve the integrity of your classic truck, this harmonic balancer is a straightforward yet impactful upgrade that pays dividends in performance, reliability, and peace of mind.

### Pros and Cons of Buying a Powerbond Dayco SX-4116 Engine Harmonic Balancer for a 1973-1974 GMC K25/K2500 Suburban (5.7L V8 BF Engine)

#### **Pros:**

1. **Compatibility and Fitment** The SX-4116 is specifically designed for the 5.7L V8 BF engine family, which includes your 1973-1974 GMC Suburban/K25/K2500. This ensures proper alignment with the crankshaft and flywheel, reducing the risk of installation errors.

2. **Durability and Performance** Powerbond and Dayco are reputable brands known for producing high-quality harmonic balancers. The SX-4116 is built with reinforced rubber and steel components, offering better resistance to vibration, wear, and cracking compared to OEM parts, which may degrade over time.

3. **Reduced Engine Noise and Vibration** A worn or failing harmonic balancer can cause excessive vibration, rattling, and even engine damage. Replacing it with a new SX-4116 will smooth out engine operation, particularly noticeable at idle and during acceleration.

4. **Prevents Crankshaft Damage** If the harmonic balancer fails completely, it can lead to catastrophic engine damage due to the crankshaft s exposed journals. Installing a reliable replacement like the SX-4116 acts as a preventive measure.

5. **Ease of Installation** The SX-4116 is designed for straightforward installation, requiring only basic tools. Most mechanics or even experienced DIYers can replace it without major modifications to the engine bay.

6. **Warranty Coverage** Both Powerbond and Dayco offer warranties on their harmonic balancers, providing peace of mind in case of premature failure. This is a significant advantage over aftermarket parts with no backing.

7. **Cost-Effective Long-Term Solution** While the upfront cost is higher than some generic aftermarket options, the SX-4116 s longevity and performance justify the investment, avoiding costly repairs from a failed balancer.

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#### **Cons:**

1. **Higher Upfront Cost** Compared to generic or no-name harmonic balancers, the SX-4116 is more expensive. However, this is offset by its quality and reliability.

2. **Limited Availability** Depending on the region, finding this specific part may require ordering online, which could involve shipping delays or additional fees.

3. **Potential for Overkill** If your engine is in excellent condition and the balancer is still functional, replacing it prematurely is unnecessary. However, if it s showing signs of wear (cracks, excessive play, or vibration), the upgrade is justified.

4. **Installation Complexity (If DIY)** While not overly difficult, replacing a harmonic balancer requires removing the flywheel housing or flexplate, which may involve additional steps like adjusting the timing or rebalancing the engine. Inexperienced DIYers might struggle with alignment or torque specifications.

5. **Compatibility with Aftermarket Modifications** If your vehicle has been heavily modified (e.g., forced induction, custom crankshafts, or performance tuning), ensure the SX-4116 is still suitable. Some high-performance setups may require a heavier-duty balancer.

6. **Potential for Counterfeit Parts** As with any branded aftermarket part, there is a risk of purchasing a counterfeit or low-quality knockoff, especially from untrusted sellers. Always buy from reputable dealers or directly from the manufacturer s authorized distributors.

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### **Conclusion:**

The **Powerbond Dayco SX-4116 harmonic balancer** is an excellent choice for your 1973-1974 GMC K25/K2500 Suburban with a 5.7L V8 BF engine. Its **superior durability, noise reduction, and preventive benefits** far outweigh the minor drawbacks, such as cost and installation effort. If your current balancer is cracked, worn, or causing excessive vibration, replacing it with the SX-4116 is a **smart, long-term investment** that will improve drivability and protect your engine.

For vehicles with **high mileage or signs of balancer failure**, this part is highly recommended. If your balancer is still in good condition, the upgrade may not be urgent, but it s a wise precautionary measure.

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### **Final Recommendation:** **Buy the Powerbond Dayco SX-4116 harmonic balancer** if:

- Your current balancer is cracked, loose, or showing signs of wear.

- You want to eliminate vibration and engine noise.

- You prioritize long-term reliability over short-term cost savings.

- You plan to keep the vehicle for an extended period.

**Avoid it if:**

- Your balancer is still in perfect condition with no visible damage.

- You re on a tight budget and can monitor the balancer for further deterioration.

- You lack confidence in performing the installation yourself (consider hiring a mechanic).

For most owners of classic or high-mileage trucks like yours, **the SX-4116 is the best available option** and a worthwhile upgrade. Always pair it with proper installation techniques and follow the manufacturer s torque specifications to ensure optimal performance.

Details:

Dayco Engine Harmonic Balancer for 1973-1974 GMC K25 K2500 Suburban 5.7L V8 bf: Status: In Stock.

specifications cranshafengin:

  • for models: K25, K2500, Suburban
  • for makes: Gmc
  • for years: 1973-1974
  • brand: Powerbond By Dayco
  • mpn: Sx-4116
  • item weight: 8.8800
  • ipn: C601 54-22
  • placement on vehicle: Engine Cylinder Block
  • compatible model: K25/k2500 Suburban
  • compatible year: 1974 1973
  • core charge: Free No Core Charge
  • type: Engine Harmonic Balancer
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Dayco Engine Harmonic Balancer
  • timing marks: Yes
  • overall width: 2.343 In / 59.50 Mm
  • hardware included: No
  • ring width: 1.299 In / 32.99 Mm
  • counterweight balance: Neutral, No Counterweight
  • outer ring material: Steel
  • overall outside diameter: 6.752 In / 171.50 Mm
  • nose outside diameter: 1.762 In / 44.75 Mm
  • crank bore: 1.245 In / 31.60 Mm

seller cranshafengin:

  • city: Indianapolis, Indiana
  • # reviews: 644287
  • rating: 99.6%

shipping cranshafengin:

  • transit: 2-5 Days
  • type: Fixed
  • service: Standard, Expedited
  • class: Standard, Expedited
  • cost: $0.00

general cranshafengin:

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

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  • other
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returns cranshafengin:

  • time: 30 Days
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offer cranshafengin:

  • started: April 13, 2026
  • options: Ship-to-home
  • sold: 0
  • quantity: 1
  • availability: In Stock
for models: k25, k2500, suburban, for makes: gmc, for years: 1973-1974, item weight: 8.8800, placement on vehicle: engine cylinder block, compatible model: k25/k2500 suburban, compatible year: 1974 1973, core charge: free no core charge, type: engine harmonic balancer, fitment type: direct replacement, bundle description: 1 pc genuine dayco engine harmonic balancer, timing marks: yes, overall width: 2.343 in / 59.50 mm, hardware included: no, ring width: 1.299 in / 32.99 mm, counterweight balance: neutral, no counterweight, outer ring material: steel, overall outside diameter: 6.752 in / 171.50 mm, nose outside diameter: 1.762 in / 44.75 mm, crank bore: 1.245 in / 31.60 mm,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19814717859122892,
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