Aftermarket pulleys void warranty?

[mamazcookn]

??

[Jaylyons1]

Shouldn't as long as it isn't proved that the pulley caused the issue that you are trying to get covered under warranty.

[Grail05]

Originally Posted by Jaylyons1

Shouldn't as long as it isn't proved that the pulley caused the issue that you are trying to get covered under warranty.

Then if it doesnt that shouldnt be a problem...

So yes if it is related issue that cause the problem then YES...

To OP not sure if dinan carry a pulley im pretty sure they do get that sonit covers under warranty

[persian54]

Originally Posted by TrackRat

Any alterations to the vehicles "engineered specifications" are grounds for voiding the relevant section of the new vehicle warranty, which is a conditional contract. That includes the powertrain, suspension, electrics, etc. The Magnuson Moss Act does NOT apply to alterations to the vehicle's engineered specifications, it applies to replacement service parts meant to be an OE spec part. BMW does not need to prove anything other than you altered the engineered specifications to void that section of your warranty and they do this regularly.

Read your warranty.

Correct. It won't void your entire warranty but it can void that part.
I say "can" because it depends on your relationship with the SA/Tech/Dealer.
Also, if you go in for sale, a brake issue, they won't really notice a pulley as they're not looking for it.

As Sean05 said, you may want to go with Dinan as they warranty their parts