1. Engine Crankshafts Products
  2. sku: 20358572358605752
  3. VAP AUTOPARTS VA13378401P

VAP-AUTOPARTS VA13378401P Harmonic Balancer K20 K30 P10 P20 P30 V8 5.7L

fits model: K5, Suburban, Blazer. make: Chevrolet.

Va13378401p Vap-autoparts For Chevrolet K20 Suburban K30 K5 Blazer P10 P20 P30 V8 5.7l Harmonic Balancer

( Brand: Vap-autoparts ), ( Manufacturer Part Number: VA13378401P ), ( Part Type: Balancer ), ( Oe/oem Part Number: 594-006 ), ( Fitment Type: Direct Replacement ), ( Weight: About 11 Lb ), ( Color: Black ), ( Drive Belt Type: Serpentine ), ( Package Contents: 1 Harmonic Balancer ), ( Manufacturer Warranty: 1 Year ), ( Packaging Type: Box ), ( Engine: V8 5.0l, V8 5.7l )

Review VAP AUTOPARTS Chevrolet K20 K30 P10 P20 P30 V8 5.7l Harmonic Balancer fits SUBURBAN BLAZER K5

The **VA13378401P Harmonic Balancer** from VAP Autoparts is a precision-engineered, high-performance replacement part designed exclusively for the robust and powerful **Chevrolet K20, K30, K5 Blazer, P10, P20, and P30 platforms**, specifically tailored to accommodate the **5.7L V8 engine** found in these iconic full-size trucks and SUVs. Crafted from premium-grade materials, this harmonic balancer is built to withstand the intense torsional forces and high RPM demands of the LS-series engine architecture, ensuring smooth operation and longevity under heavy loads. The VA13378401P features a **reinforced rubber core** reinforced with high-strength steel components, providing superior damping and vibration suppression to prevent engine shake, harsh idle conditions, and premature wear on related drivetrain components. Its **precision-balanced design** minimizes harmonic distortion, reducing stress on the crankshaft and connecting rods while enhancing overall engine efficiency and drivability. Whether installed in a classic K5 Blazer, a rugged Suburban, or a high-performance P30 variant, this harmonic balancer delivers reliable performance, helping to maintain optimal engine balance and protect critical internal components from excessive strain. Built to meet or exceed OEM specifications, the VA13378401P is a direct-fit solution that ensures compatibility with aftermarket and factory-installed accessories, making it an essential upgrade for enthusiasts seeking to restore or enhance the performance of their Chevrolet V8-powered vehicles.

### **Pros and Cons of buying a VA13378401P Harmonic Balancer for Chevrolet K20 Suburban/K30/K5 Blazer (P10/P20/P30) 5.7L V8**

#### **Pros:**

1. **OEM Replacement Part** This harmonic balancer is designed as an original equipment replacement, meaning it should fit perfectly without modifications. It is built to the same specifications as the factory part, ensuring proper alignment and performance.

2. **Durability and Performance** High-quality harmonic balancers are engineered to reduce vibration, smooth out engine operation, and prevent damage to the crankshaft and drivetrain. A well-made unit can extend the life of related components by absorbing shocks and torsional vibrations effectively.

3. **Compatibility** The VA13378401P is specifically listed for the Chevrolet K20 Suburban, K30, and Blazer models with the 5.7L V8 engine (including P10, P20, and P30 trims). This ensures it will match the bolt patterns, mounting points, and overall design of your vehicle s engine bay.

4. **Potential Cost Savings** While the upfront cost may be higher than some aftermarket alternatives, a high-quality harmonic balancer can save money in the long run by preventing costly crankshaft damage or drivetrain issues that can arise from a failing balancer.

5. **Warranty and Reliability** VA Autoparts (or the manufacturer behind this part) may offer warranties or guarantees, providing peace of mind. Reputable brands often stand behind their products, ensuring they meet durability standards.

6. **Easier Installation** Since it is an OEM replacement, the installation process should be straightforward, requiring only basic tools. No special modifications or adapters are typically needed.

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#### **Cons:**

1. **Higher Upfront Cost** Compared to some aftermarket harmonic balancers, OEM or high-quality replacements can be more expensive. This may be a deterrent for budget-conscious buyers, though the long-term benefits may justify the cost.

2. **Limited Availability** Depending on the region or dealer network, finding this specific part may require ordering online or from specialty auto parts suppliers. Local dealerships might not always stock it, leading to potential delays.

3. **Potential Counterfeit Concerns** If purchasing from untrusted sources (e.g., third-party sellers without proper certification), there is a risk of receiving a counterfeit or low-quality part. Always buy from authorized dealers or reputable online retailers to avoid this.

4. **Mixed Reviews on Aftermarket Brands** While VA Autoparts is generally reliable, some users report inconsistent quality depending on the batch or supplier. Always check reviews or ask for recommendations before purchasing.

5. **Installation Challenges (If DIY)** If you are not experienced with engine work, replacing a harmonic balancer can be tricky due to its location (often behind the timing cover or accessory belt) and the need for precise alignment. Improper installation could lead to vibration issues or even damage to the crankshaft pulley.

6. **Wear and Tear Over Time** Even high-quality harmonic balancers will eventually wear out, especially in high-mileage or performance-oriented vehicles. Regular inspection (every 60,000 100,000 miles) is recommended to catch issues early.

---

### **Conclusion:**

The **VA13378401P harmonic balancer** is a solid choice for your Chevrolet K20 Suburban/K30/K5 Blazer (5.7L V8) if you prioritize **durability, OEM fitment, and long-term reliability**. It is well-suited for vehicles that experience excessive vibration, have a worn-out original balancer, or are used for towing/heavy loads. However, the higher cost and potential installation complexity may be drawbacks for some buyers.

If you are comfortable with DIY repairs and have access to the right tools, this part is an excellent investment to prevent costly engine damage. For those unsure about installation, consulting a mechanic may be wise to ensure proper fitting and alignment.

### **Recommendation:**

- **Buy from an authorized dealer or reputable online retailer** (e.g., RockAuto, Summit Racing, or a local Chevrolet parts store) to avoid counterfeit parts.

- **Check for signs of wear** (cracks, rubber degradation, excessive play) before purchasing a used part.

- **Consider professional installation** if you lack experience with engine components to ensure optimal performance.

- **Pair with a high-quality crankshaft pulley** (if replacing both) for maximum vibration control.

- **Monitor the balancer s condition** during regular maintenance checks, especially if the vehicle is used for towing or high-performance driving.

**Final Verdict:** This is a **strong OEM replacement option** for your vehicle, but weigh the cost against your budget and mechanical comfort level. If you value reliability and longevity, it is a worthwhile upgrade.

Details:

Noticeable Harmonic Balancer Wobble. In which case it would be difficult to drive and the engine overheat fairly soon after. Bad Harmonic Balancer: Signs to Watch Out For. On most engines, it takes a little over an hour.

Other things cause that more commonly, but that's one symptom where the harmonic balancer should be checked. On many modern vehicles, there is an automatic, spring-loaded belt pensioner that can be rotated to loosen. Carefully remove the kickstands and lower vehicle, starting vehicle to ensure proper reassembly. Take a flashlight and shine it directly onto the balancer to see if goes in out while rotating.

If it wobbles, the harmonic balancer is bad. Step 2: Remove the accessory drive belts. Can I drive with a bad harmonic balancer. Illuminated Check Engine Light.

Remove the harmonic balancer bolt by using strap wrench to hold still. Harmonic Balancer Replacement. Start your engine and check the harmonic balancer to see if it wobbles while is running. Its not okay to drive with a bad harmonic balancer.

Engine Vibrations. Using the gear puller, place hooks in an area that will not easily break, like lip of pulley section. When this component fails, it can cause a range of issues. The wood ruff key slot in new balancer with key, and carefully slide onto crankshaft.

Step 1: Prepare the vehicle. Jack the vehicle up high enough to obtain access harmonic balancer, located on front of motor and attached crankshaft. It can also tear up drive belts and possibly come apart posing a danger to people property. Note: Use your cell phone to take a picture of the belt routing for future reference.

Older vehicles, and some newer ones, require you to loosen a mechanical pensioner. Newly Listed. How do you test a harmonic balancer. What is the first sign that a harmonic balancer might be bad.

For Chevrolet K20 Suburban K30 K5 Blazer P10 P20 P30 V8 5.7L Harmonic Balancer. The most common symptoms of a bad harmonic balancer include. Turn off the ignition. Rotate or loosen the belt pensioner to reinstall.

Usually there would be belt noise on starting the engine. The bouncing crankshaft will wear on the main bearings. Possibly, but the risk is that it could throw serpentine belt off, which usually drives water pump and power steering. Visible Wear or Damage.

Note: Refer to your previous photograph or service manual determine the correct belt routing. Step 3: Remove the harmonic balancer bolt. Unusual Noises. Can I drive if the harmonic balancer is failing.

Note: Most harmonic balances are kept from rotating on the crankshaft by using a wood ruff key.

part #: va13378401p price

  • $58.99

specifications cranshafengin:

  • for models: K5, Suburban, Blazer
  • for makes: Chevrolet
  • brand: Vap-autoparts
  • mpn: Va13378401p
  • part type: Balancer
  • oe/oem part number: 594-006
  • fitment type: Direct Replacement
  • weight: About 11 Lb
  • color: Black
  • drive belt type: Serpentine
  • package contents: 1 Harmonic Balancer
  • manufacturer warranty: 1 Year
  • packaging type: Box
  • engine: V8 5.0l, V8 5.7l

seller cranshafengin:

  • # reviews: 148051
  • city: Ontario, California
  • rating: 99.7%

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

general cranshafengin:

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

offer cranshafengin:

  • sold: 0
  • quantity: 10
  • availability: In Stock
  • options: Ship-to-home
  • best offers: True
  • started: May 14, 2026

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  • cost: $0.00
  • type: Fixed
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for models: k5, suburban, blazer, for makes: chevrolet, part type: balancer, oe/oem part number: 594-006, fitment type: direct replacement, drive belt type: serpentine, package contents: 1 harmonic balancer, manufacturer warranty: 1 year, packaging type: box, engine: v8 5.0l, v8 5.7l,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, color: black, weight: about 11 lb, sku: 20358572358605752,
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