I’m looking at buying a 2003 2.4 7 seater Alphard with 80k on the clock and have been having trouble finding out the intervals of when I need to get the timing belt changed and indeed whether it’s a chain or a belt. Can anyone shed any light on this for me? Thanks

2.4l uses a chain.

I would not worry about it, honestly. 

Unless you are having some other major engine issue, the chain is the last thing to worry about