some 3.5 had balance shaft problems.don't know which years.

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

Only model year 06 and first half of 07. It doesn't affect w212.

__________________
CENSORED due to not family friendly words

So would that be the 2nd half cars of 2005 date code, and possibly all of 2006 date code cars

Would that be a fair guess?

Martin

No, mid year, 2007. There is an actual serial number where the change was made if you google it. Also, if they have service records to show the timing system was serviced to fix the issue, it will have the updated gears and should be fine.