1. Engine Crankshafts Products
  2. sku: 19225044813727721
  3. POWERBOND DAYCO SX-3517

POWERBOND BY DAYCO SX-3517 Engine Harmonic Balancer Cylinder 5.7L V8

fits model: C1500. make: Gmc. year: 1980–1995.

Sx-3517 Powerbond By Dayco Engine Harmonic Balancer For 1980-1995 Gmc C1500 5.7l V8 Cylinder Mt

( Brand: Powerbond By Dayco ), ( Manufacturer Part Number: SX-3517 ), ( Item Weight: 11.1100 ), ( Ipn: C499 78-27 ), ( Placement On Vehicle: Engine Cylinder Block ), ( Compatible Year: 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Harmonic Balancer ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Dayco Engine Harmonic Balancer )

Review POWERBOND BY DAYCO Engine Harmonic Balancer Gmc 5.7l V8 Cylinder Mt fits C1500 1980–1995

The **Powerbond Dayco SX-3517 Engine Harmonic Balancer** is a precision-engineered replacement part designed specifically for the robust **1980 1995 GMC C1500 pickup trucks** equipped with the legendary **5.7L (350 cubic inch) V8 small-block Chevrolet engine**. This high-performance harmonic balancer is crafted to restore optimal vibration damping, reduce engine noise, and enhance drivability while maintaining the integrity of your vehicle s powertrain. Engineered from **high-strength steel**, the SX-3517 features a **reinforced rubber insert** that effectively isolates torsional vibrations, preventing excessive wear on critical components such as the crankshaft, timing belt, and drivetrain. Unlike generic aftermarket alternatives, this balancer is built to exact specifications, ensuring a seamless fit with the **GM 5.7L V8 s harmonic damper assembly**, complete with the correct bolt pattern and mounting points. Its **durable construction** minimizes flex and resonance, which is particularly beneficial for high-performance applications, towing, or heavy-duty use where engine strain is common. Whether you re restoring a classic C1500 to its original glory or upgrading an older vehicle for modern reliability, the Powerbond Dayco SX-3517 delivers a **direct-fit, long-lasting solution** that exceeds OEM standards. With its **rugged design and superior vibration control**, this harmonic balancer is an essential component for maintaining smooth operation and extending the lifespan of your engine.

### Pros and Cons of Buying a Powerbond Dayco SX-3517 Engine Harmonic Balancer for a 1980 1995 GMC C1500 with a 5.7L V8

#### **Pros:**

1. **Compatibility** The SX-3517 is specifically designed for the 5.7L V8 engines found in the 1980 1995 GMC C1500, including the LB7 and early L36 variants. This ensures a proper fit without modification.

2. **Durability** Powerbond and Dayco are well-regarded manufacturers for harmonic balancers, known for using high-quality materials like rubber and steel to withstand engine vibrations and stress.

3. **Reduced Vibration** A worn or failing harmonic balancer can cause excessive engine vibration, which this replacement part helps eliminate, improving drivability and reducing wear on connected components.

4. **Prevents Catastrophic Failure** A cracked or broken harmonic balancer can lead to severe engine damage, including bent connecting rods or damaged crankshaft pulleys. Replacing it proactively avoids costly repairs.

5. **Easy Installation** The SX-3517 is a direct bolt-on replacement, requiring no machining or special tools beyond standard engine maintenance equipment.

6. **Warranty Coverage** Both Powerbond and Dayco offer warranties on their harmonic balancers, providing peace of mind against premature failure.

7. **Cost-Effective** Replacing a harmonic balancer is significantly cheaper than repairing engine damage caused by a failed one, making it a practical investment.

#### **Cons:**

1. **Labor Costs** While the part itself is affordable, labor to remove and install the harmonic balancer (which involves disconnecting the serpentine belt, timing belt, or accessory drives) can be time-consuming and costly if done professionally.

2. **Potential for Misalignment** If not installed correctly, the balancer could cause slight timing issues (especially if the crankshaft pulley is also being replaced). Proper alignment with the crankshaft keyway is critical.

3. **Limited Lifespan** Like all rubber components, harmonic balancers degrade over time due to heat, vibration, and age. While this unit is durable, it may still require replacement every 80,000 120,000 miles or sooner if the vehicle sees heavy use.

4. **Compatibility with Aftermarket Mods** If the engine has been modified (e.g., forced induction, high-performance camshafts, or a supercharger), the stock harmonic balancer may not handle the increased stress. In such cases, a heavier-duty balancer (e.g., from a performance brand) may be necessary.

5. **Availability of Alternatives** Some aftermarket or performance-oriented harmonic balancers (e.g., those with reinforced steel or composite materials) may offer better longevity for high-performance applications, though they come at a higher cost.

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### **Conclusion:**

The **Powerbond Dayco SX-3517 harmonic balancer** is a solid, reliable choice for a 1980 1995 GMC C1500 with a 5.7L V8, especially for stock or lightly modified engines. It addresses common issues like vibration and prevents potential engine damage. However, the decision should consider the trade-offs between part cost and labor investment, as well as the vehicle s specific use case.

If the engine is stock or runs normally, this balancer is a straightforward and cost-effective solution. For high-performance applications or engines with known harmonic balancer failures, exploring heavier-duty alternatives may be worthwhile. Always ensure proper installation to avoid timing or alignment issues.

### **Recommendation:**

- **For stock or mildly modified engines:** Proceed with the **Powerbond Dayco SX-3517**. It is a well-suited, budget-friendly replacement that balances quality and performance.

- **For high-performance or heavily modified engines:** Consider a **performance-grade harmonic balancer** (e.g., from brands like **Crane, MSD, or JE** for reinforced steel or composite designs) to handle increased stress.

- **If labor is a concern:** If you re comfortable with basic engine maintenance, installing it yourself can save on shop labor costs. Otherwise, trust a reputable mechanic to handle the job carefully.

- **Always check for leaks or cracks** during installation, and ensure the crankshaft keyway is properly aligned to avoid timing issues.

Details:

Dayco Engine Harmonic Balancer for 1980 - 1995 GMC C1500 5.7L V8 Cylinder mt: Status: In Stock.

specifications cranshafengin:

  • for models: C1500
  • for makes: Gmc
  • for years: 1980-1995
  • brand: Powerbond By Dayco
  • mpn: Sx-3517
  • item weight: 11.1100
  • ipn: C499 78-27
  • placement on vehicle: Engine Cylinder Block
  • compatible year: 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983
  • core charge: Free No Core Charge
  • type: Engine Harmonic Balancer
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Dayco Engine Harmonic Balancer

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  • options: Ship-to-home
  • started: March 8, 2026
  • sold: 0
  • quantity: 5
  • availability: In Stock

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  • # reviews: 630255
  • city: Indianapolis, Indiana
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  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

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for models: c1500, for makes: gmc, for years: 1980-1995, item weight: 11.1100, placement on vehicle: engine cylinder block, compatible year: 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983, core charge: free no core charge, type: engine harmonic balancer, fitment type: direct replacement, bundle description: 1 pc genuine dayco engine harmonic balancer,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19225044813727721,
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