how long does the timing chain last on 2003 Mazda B4000

what is the schedule for changing the timing chain?

Asked by for the 2003 Mazda B4000
I have not seen problems with the timing chain on this engine if the engine oil and filter are changed regularly.
2 more answers
The 4.0L V6 Engine on your B4000 is driven by a Timing Chain not a Timing Belt. Generally there is not scheduled maintenance to replace timing chains unless there is a problem.

There is an article in the Encyclopedia about this:
Sorry I misread the question