Price match guarantee
We know our products
Quick & Hassle Free
Extensive product catalog
The Crank Shaft Bolts have changed on 2006-up Premium V8 Engines, and existing Tool J-45930 will not work with the new Bolts. J-45930-A will service both 2006-up and prior year Seals. J-45930-A is required by Buick or Cadillac dealers who do not already have J-45930 to update.