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GM 12621646 Genuine Parts Crankshaft Balancer Review

3

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Very good

Revainrating 4.5 out of 5  
Rating 
4.7
🚀 Engines & Engine Parts, 🏎️ Performance Car Parts & Accessories

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Description of GM 12621646 Genuine Parts Crankshaft Balancer

Connects to the crankshaft of your vehicle’s engine to help reduce vibration. GM-recommended replacement part for your GM vehicle’s original factory component. Offering the quality, reliability, and durability of GM OE. Manufactured to GM OE specification for fit, form, and function.

Reviews

Global ratings 3
  • 5
    2
  • 4
    1
  • 3
    0
  • 2
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  • 1
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Type of review

Revainrating 5 out of 5

Excellent Performance Boost for My Car

The ACDelco crankshaft is a game-changer for any car because it boosts the performance to its maximum potential. Through trial and error, I found that this crankshaft was exactly what my car needed. It has provided me with a smooth ride, improved horsepower, and better fuel efficiency. The cons? None! This product is durable, reliable, and has exceeded my expectations. Highly recommend to anyone looking to upgrade their engine parts.

Pros
  • Easy to install and designed to fit perfectly as original equipment in compatible vehicles.
Cons
  • Requires proper maintenance to ensure long-term performance and potential expensive repairs if not taken care of properly.

Revainrating 4 out of 5

FACTORY REPLACEMENT PARTS

Replace a wobbly shock absorber and the car will run and drive great. Whenever it rained, the serpentine dropped... not now! (It took me a while to write this review after I edited that part.)

Pros
  • Engines and Engine Parts
Cons
  • Anything I can add

Revainrating 5 out of 5

Fixed start up noise issue

After years of strange cold start noise, replacing this part has resolved the issue. It wasn't the belt, alternator, battery and tensioner. The balancer consists of two parts separated by a rubber ring. It looked and sounded like the original rubber ring had deteriorated and something had fallen out. This caused the rubber ring inside the outer balancing ring to slip when the car was started. This caused a rapid chirp on cold starts. I believe the problem went away as it warmed up as the rubber

Pros
  • Harmonic Balancers
Cons
  • Some minor tweaks