1. Engine Crankshafts Products
  2. sku: 20035993455138721
  3. DORMAN OE SOLUTIONS SX-8132

DORMAN OE SOLUTIONS SX-8132 Engine Harmonic Balancer Van 5.7L V8

fits model: G25, G2500, Tl. make: Gmc. year: 1970–1972.

Sx-8132 Dorman - Oe Solutions Engine Harmonic Balancer For 1970-1972 Gmc G25 G2500 Van 5.7l V8 Tl

( Brand: Dorman Oe Solutions ), ( Manufacturer Part Number: SX-8132 ), ( Manufacturer Warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part ), ( Item Weight: 8.6300 ), ( Ipn: C394 78-25 ), ( Placement On Vehicle: Engine Cylinder Block ), ( Compatible Model: G25/g2500 Van ), ( Compatible Year: 1972 1971 1970 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Harmonic Balancer ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Dorman Engine Harmonic Balancer )

Review DORMAN OE SOLUTIONS Engine Harmonic Balancer Gmc Van 5.7l V8 fits G25 G2500 TL 1970–1972

The **Dorman SX-8132 Engine Harmonic Balancer** is a precision-engineered replacement part designed specifically for the **1970 1972 GMC G25/G2500 Van** equipped with the legendary **5.7L (350 cubic inch) Chevrolet Small Block V8 (TL series)**. This high-performance balancer is crafted to restore optimal vibration damping and smooth operation to your engine, ensuring reliable performance and longevity. Engineered from durable **cast iron** with a robust **steel hub**, the Dorman SX-8132 is built to withstand the torsional forces generated by the high-revving V8, reducing engine shake and preventing premature wear on critical components like the crankshaft, timing belt, and related drivetrain parts. The balancer features a **precision-machined rubber insert** that absorbs engine vibrations, minimizing harshness and enhancing drivability especially noticeable during acceleration and at higher RPMs. This part is a direct-fit replacement, eliminating the need for modifications, and is compatible with both **manual and automatic transmission** applications, making it a versatile upgrade for classic GMC vans seeking improved engine smoothness. Whether you're restoring a vintage workhorse or maintaining a well-loved daily driver, the Dorman SX-8132 ensures a seamless, vibration-free power delivery, helping preserve the integrity of your engine s internal components while delivering the classic muscle that the TL-series V8 is renowned for. Built to exacting standards, this balancer is a trusted choice for mechanics and enthusiasts alike, offering a balance of durability, performance, and ease of installation.

The Dorman SX-8132 engine harmonic balancer is a popular aftermarket replacement part for the 5.7L V8 engines found in 1970 1972 GMC G25/G2500 vans. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Dorman SX-8132 Harmonic Balancer**

1. **High-Quality Construction**

The Dorman brand is known for durability and reliability in aftermarket automotive parts. The SX-8132 is made with steel components and is designed to handle the torque and vibration of a 5.7L V8 engine. It is built to last longer than many OEM or lower-quality alternatives, reducing the risk of premature failure.

2. **Compatibility**

This balancer is specifically engineered for the 5.7L V8 engines used in 1970 1972 GMC G25/G2500 vans, including the "TL" (Turbo-Loaded) version. It fits seamlessly with the crankshaft and related components, ensuring proper alignment and function.

3. **Reduces Vibration and Noise**

A worn or damaged harmonic balancer can cause excessive vibration, rattling, or even a "clunking" noise, especially at higher RPMs. The Dorman SX-8132 is designed to dampen engine vibrations, improving smoothness and reducing noise, which is particularly noticeable in older vehicles with high mileage.

4. **Ease of Installation**

Dorman parts are generally straightforward to install, especially for those with basic mechanical experience. The SX-8132 comes with all necessary hardware, and the installation process typically requires only a few tools (e.g., socket set, torque wrench, and possibly a puller if the old balancer is seized).

5. **Cost-Effective Solution**

While not the cheapest option, the Dorman balancer offers a balance between affordability and quality. It is significantly less expensive than a full engine rebuild or replacement and avoids the potential downtime and labor costs associated with OEM parts or custom machining.

6. **Warranty Coverage**

Dorman parts often come with a warranty (typically 12 months or more), providing peace of mind against defects in materials or workmanship. This is particularly useful if the balancer fails shortly after installation.

7. **Improved Engine Protection**

A failing harmonic balancer can lead to more serious issues, such as damage to the crankshaft or connecting rods if the balancer shatters. The Dorman SX-8132 helps prevent such catastrophic failures by maintaining proper vibration control.

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### **Cons of the Dorman SX-8132 Harmonic Balancer**

1. **Potential for Over-Tightening**

The harmonic balancer is secured with a single bolt (or sometimes two, depending on the engine variant). If the bolt is overtightened during installation, it can strip the threads in the crankshaft or cause damage to the balancer s mounting surface. This requires careful attention to torque specifications (typically around 60 70 ft-lbs for these engines).

2. **Limited Customization**

Unlike some aftermarket balancers, the Dorman SX-8132 is not designed for custom tuning or performance modifications. If you are looking for a lighter-weight or high-performance balancer (e.g., for drag racing or high-RPM applications), this may not be the best choice.

3. **Mixed Reviews on Longevity**

While Dorman is a reputable brand, some users report that the SX-8132 may not last as long as expected in extreme conditions (e.g., high-mileage vehicles with severe engine wear, heavy towing, or aggressive driving). In such cases, additional maintenance (e.g., checking the bolt periodically) may be necessary.

4. **Possible Misalignment**

If the old balancer was damaged or the crankshaft was bent, the new Dorman balancer may not sit perfectly flush. This can lead to minor vibration or noise. Ensuring the crankshaft is straight and the balancer is properly aligned during installation is critical.

5. **Not a Permanent Fix for Underlying Issues**

If the engine has other problems (e.g., worn bearings, a bent crankshaft, or excessive play in the rod bearings), replacing just the harmonic balancer will not address these issues. The balancer is a symptom fix, not a root-cause solution.

6. **Availability and Lead Times**

While Dorman parts are widely available, stock levels can vary by region or retailer. In some cases, ordering may require waiting a few days to a week, which could delay repairs if you re working on a project vehicle.

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### **Conclusion**

The Dorman SX-8132 harmonic balancer is a solid, reliable choice for replacing a worn or failing balancer on a 1970 1972 GMC G25/G2500 van s 5.7L V8 engine. It offers a good balance of quality, compatibility, and ease of installation, making it a practical solution for most owners. The potential downsides such as the risk of overtightening or limited longevity in extreme conditions are manageable with proper installation techniques and periodic maintenance.

For the average owner driving a daily van or a project vehicle with moderate use, the Dorman SX-8132 is a **highly recommended** replacement part. It will improve engine smoothness, reduce noise, and protect against more costly failures. If you re working on a high-performance or heavily modified engine, however, you may want to explore other options (e.g., aftermarket performance balancers) to ensure optimal performance.

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### **Final Recommendation**

**Buy the Dorman SX-8132 harmonic balancer** for your 1970 1972 GMC G25/G2500 van s 5.7L V8 engine if:

- You need a reliable, high-quality replacement for a worn or damaged balancer.

- You want to reduce vibration and noise without a major overhaul.

- You re comfortable with basic engine maintenance and proper installation techniques.

**Consider alternatives (e.g., OEM or other aftermarket brands) only if:**

- You have specific performance needs (e.g., drag racing) that require a lighter or custom balancer.

- You suspect underlying engine issues (e.g., bent crankshaft) that would make the balancer replacement ineffective.

Follow the manufacturer s torque specifications and ensure the crankshaft is straight during installation to maximize the balancer s lifespan. With proper care, the Dorman SX-8132 will serve your engine well for many miles.

Details:

Dorman Engine Harmonic Balancer for 1970-1972 GMC G25 G2500 Van 5.7L V8 Tl: Status: In Stock.

part #: sx8132 prices

  • $24.78-$78.42

specifications cranshafengin:

  • for models: G25, G2500, Tl
  • for makes: Gmc
  • for years: 1970-1972
  • brand: Dorman Oe Solutions
  • mpn: Sx-8132
  • manufacturer warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part
  • item weight: 8.6300
  • ipn: C394 78-25
  • placement on vehicle: Engine Cylinder Block
  • compatible model: G25/g2500 Van
  • compatible year: 1972 1971 1970
  • core charge: Free No Core Charge
  • type: Engine Harmonic Balancer
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine Dorman Engine Harmonic Balancer

seller cranshafengin:

  • # reviews: 649944
  • city: Indianapolis, Indiana
  • rating: 99.6%

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  • sold: 0
  • availability: In Stock
  • quantity: 2
  • options: Ship-to-home
  • started: April 27, 2026

general cranshafengin:

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

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for models: g25, g2500, tl, for makes: gmc, for years: 1970-1972, manufacturer warranty: 1 year / 2 years / 3 years / 5 years depending on part, item weight: 8.6300, placement on vehicle: engine cylinder block, compatible model: g25/g2500 van, compatible year: 1972 1971 1970, core charge: free no core charge, type: engine harmonic balancer, fitment type: direct replacement, bundle description: 1 pc genuine dorman engine harmonic balancer,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 20035993455138721,
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