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GM Performance Parts 12557840 Balancer Bolt

Free shipping on orders over $29.99

$9.48

$ 3 .99 $3.99

In Stock
  • package dimensions: 6.858 cms (l) x 9.398 cms (w) x 6.858 cms (h)
  • product type: auto part
  • package quantity: 1
  • country of origin: china
  • Fit type: Vehicle Specific


GM 12557840


ACP
2025-08-15 10:55:02
I ordered this when I had to replace my wobbling harmonic balancer in my C5 Corvette. It is an exact match for the factory bolt. I didn't have any problems installing the bolt. But, in order to get to the proper torque applied to the bolt, I had to use my jack's handle as a cheater bar to rotate the bolt the necessary 140 degrees. I hope to never have the need to remove that bolt again.
Mstokes
2025-08-07 15:42:26
This bolt may be the greatest bolt ever...I am really impressed with how it just theaded into the crankshaft. This bolt might have changed my life. It's very bolty. If this bolt was a person, it would be Usain Bolt where the bolt fastens, Usain Bolt is just fast...
Brian Taylor
2025-08-06 17:10:36
No issues with this product. Showed up in GM Genuine packaging. Can’t beat OE.
TX Pete
2025-07-25 14:03:12
Been holding up for 5 years.
Duke-E
2025-06-10 10:47:02
Had to replace the harmonic balancer on my 05 Suburban with the 5.3. This bolt fit perfect.
miguel davalos
2025-04-09 18:35:30
I used it on a 5.3 3 gen Chevy engine
Ron
2025-03-29 17:54:33
good bolt works well
Brent W.
2025-01-23 14:32:29
Great product.