1. Engine Crankshafts Products
  2. sku: 19266071777237721
  3. POWERBOND DAYCO SX-1740

POWERBOND BY DAYCO SX-1740 Engine Harmonic Balancer Yn 6.2L

fits model: R1500, Suburban. make: Chevrolet. year: 1989–1991.

Sx-1740 Powerbond By Dayco Engine Harmonic Balancer For 1989-1991 Chevrolet R1500 Suburban 6.2l Yn

( Brand: Powerbond By Dayco ), ( Manufacturer Part Number: SX-1740 ), ( Item Weight: 12.5700 ), ( Ipn: C411 44-13 ), ( Placement On Vehicle: Engine Cylinder Block ), ( Compatible Model: R1500 Suburban ), ( Compatible Year: 1991 1990 1989 ), ( 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 Chevrolet 6.2l Yn fits SUBURBAN R1500 1989–1991

The **Powerbond Dayco SX-1740 Engine Harmonic Balancer** is a premium, high-performance replacement part designed specifically for the **1989-1991 Chevrolet R1500 Suburban** equipped with the **6.2L V8 (YN) engine**, ensuring optimal vibration control, durability, and reliability under demanding driving conditions. Crafted from **high-quality steel with a precision-machined surface**, this harmonic balancer is engineered to absorb and dampen the natural torsional vibrations generated by the engine s crankshaft, reducing harshness, noise, and potential wear on drivetrain components. Unlike standard aftermarket alternatives, the **SX-1740 features a reinforced rubber insert** that is formulated to maintain its elasticity over time, even under extreme heat and stress, which is critical for the robust **YN engine** known for its heavy-duty towing and hauling capabilities. The balancer s **smooth, balanced operation** helps minimize engine strain, contributing to a quieter, more refined ride while extending the lifespan of connected components such as the flywheel, transmission, and drivetrain. Installation is straightforward, thanks to its **direct bolt-on compatibility**, requiring only standard tools and a bit of patience to align the timing marks properly though it s always recommended to follow the vehicle s service manual for precise procedures. Whether you re restoring a classic Suburban, upgrading an older vehicle, or simply ensuring long-term reliability, the **Powerbond Dayco SX-1740** stands as a dependable choice, blending performance with durability to meet the demands of modern and classic Chevrolet applications alike.

### **Pros and Cons of Buying a Powerbond Dayco SX-1740 Engine Harmonic Balancer for a 1989-1991 Chevrolet R1500 Suburban (6.2L V8 YN Engine)**

#### **Pros**

1. **Compatibility and Fitment** The Powerbond Dayco SX-1740 is specifically designed for the 6.2L V8 YN engine found in the 1989-1991 Chevrolet R1500 Suburban. It is a direct replacement, ensuring proper alignment with the crankshaft and engine mounts.

2. **Durability and Quality** Powerbond and Dayco are well-regarded brands for harmonic balancers, known for using high-quality materials, including reinforced rubber and steel components. This reduces the risk of premature failure compared to cheaper aftermarket or OEM replacements.

3. **Noise Reduction** A failing harmonic balancer can cause excessive vibration and noise, particularly at higher RPMs. A new balancer helps smooth out engine vibrations, improving ride comfort and reducing annoying rattles or hums.

4. **Prevents Catastrophic Failure** A cracked or broken harmonic balancer can lead to severe engine damage if the inner components (such as the rubber damper or flywheel) fail. Replacing it proactively avoids costly repairs down the line.

5. **Ease of Installation** The SX-1740 is designed for straightforward installation, requiring only basic tools. Many mechanics and DIYers report that it fits and bolts on without modification, though some may need to adjust timing belt tensioners or guides if they are also being replaced.

6. **Warranty Coverage** Both Powerbond and Dayco offer warranties on their harmonic balancers, typically covering defects in materials or workmanship for a set period (often 12-24 months). This provides peace of mind against early failure.

7. **Performance Benefits** A properly functioning harmonic balancer ensures smoother power delivery, which can be noticeable in acceleration and overall engine responsiveness, especially in a larger V8 like the 6.2L.

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#### **Cons**

1. **Cost** A new harmonic balancer from Powerbond or Dayco is more expensive than an OEM replacement or a generic aftermarket part. Prices typically range between **$150 and $250**, depending on the retailer and whether additional labor is required.

2. **Labor Intensity** Replacing a harmonic balancer often requires removing the timing belt, water pump, and possibly the serpentine belt system. This can be time-consuming, especially for less experienced mechanics. Some may need to replace the timing belt while the engine is already disassembled, adding to the cost.

3. **Potential for Misalignment** If not installed correctly, the balancer could cause vibration issues or even damage the crankshaft pulley or timing components. Precision in alignment with the crankshaft and engine mounts is critical.

4. **Limited Availability of OEM Parts** While OEM harmonic balancers (from Chevrolet) are available, they may not always be as durable as aftermarket options. However, they are often cheaper, though quality can vary.

5. **Risk of Counterfeit Parts** Purchasing from untrusted sellers (e.g., eBay, Craigslist, or unverified online marketplaces) increases the risk of receiving a fake or low-quality balancer. Always buy from reputable suppliers like RockAuto, Summit Racing, or local auto parts stores.

6. **Additional Wear Indicators** If the balancer is being replaced due to visible cracks or excessive play, it may indicate other underlying issues (e.g., worn crankshaft bearings, timing belt tensioner problems, or engine mounts). A thorough inspection is recommended to address these before reinstallation.

7. **Noise May Persist** In some cases, persistent vibration or noise after replacement could stem from other sources (e.g., loose engine mounts, worn subframe bushings, or a damaged crankshaft). A diagnostic check is advisable if symptoms remain.

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### **Conclusion**

The **Powerbond Dayco SX-1740 harmonic balancer** is a **high-quality, reliable replacement** for the 1989-1991 Chevrolet R1500 Suburban s 6.2L V8 engine. Its **durability, noise-reducing benefits, and compatibility** make it a strong choice for those prioritizing long-term performance and preventing engine damage. However, the **higher cost and labor-intensive installation** may deter some buyers, particularly if they are not comfortable with timing belt work.

For most owners, the **benefits outweigh the drawbacks**, especially if the balancer is being replaced as part of a **timing belt service** (which is recommended every **60,000 100,000 miles**). If budget is a concern, an **OEM or high-quality aftermarket alternative** (such as Gates or AC Delco) could be considered, though they may not last as long.

### **Recommendation**

- **If you are replacing the timing belt anyway**, install the **Powerbond Dayco SX-1740** it s a worthwhile investment for long-term reliability.

- **If you re only replacing the balancer**, ensure you address any **underlying vibration sources** (e.g., mounts, subframe bushings) to avoid recurring issues.

- **Purchase from a trusted supplier** (e.g., RockAuto, Summit Racing, or a local auto parts store) to avoid counterfeit parts.

- **Consider professional installation** if you lack experience with timing belt systems, as improper alignment can cause further damage.

**Final Verdict:** The **Powerbond Dayco SX-1740 is the best choice** for this application, offering a balance of quality, fitment, and longevity. For best results, pair it with a **full timing belt service** and inspect related components.

Details:

Dayco Engine Harmonic Balancer for 1989 - 1991 Chevrolet R1500 Suburban 6.2L yn: Status: In Stock.

part #: sx1740 price

  • $202.70

specifications cranshafengin:

  • for models: R1500, Suburban
  • for makes: Chevrolet
  • for years: 1989-1991
  • brand: Powerbond By Dayco
  • mpn: Sx-1740
  • item weight: 12.5700
  • ipn: C411 44-13
  • placement on vehicle: Engine Cylinder Block
  • compatible model: R1500 Suburban
  • compatible year: 1991 1990 1989
  • core charge: Free No Core Charge
  • type: Engine Harmonic Balancer
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Dayco Engine Harmonic Balancer

seller cranshafengin:

  • city: Indianapolis, Indiana
  • # reviews: 631334
  • rating: 99.5%

returns cranshafengin:

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

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general cranshafengin:

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

shipping cranshafengin:

  • class: Standard, Expedited
  • transit: 3-6 Days
  • type: Fixed
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  • cost: $0.00

offer cranshafengin:

  • started: March 11, 2026
  • availability: In Stock
  • quantity: 2
  • options: Ship-to-home
  • sold: 0
for models: r1500, suburban, for makes: chevrolet, for years: 1989-1991, item weight: 12.5700, placement on vehicle: engine cylinder block, compatible model: r1500 suburban, compatible year: 1991 1990 1989, 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: 19266071777237721,
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