Do Crank Pulleys void the engines warranty?

 

it just depends... if something in your engine fcks up and they prove it was the crank pulley, then yes it will be void... but then again some dealerships always try to blame something so if you're changing the crank pulley, it could cause headaches that you don't want

 

That's one mod I would want to stay away from. It's not worth the gains through the hassles of installation, and dealership just trying to use it as a scapegoat if something turns up wrong with the engine (doubtful it would be from the crank pulley since people are making 500whp with forced induction now lol).