/diy/ - Do It Yourself

My water radiator (cooling) for heavy machinery is broken and it is not produced or traded anymore, what's the best way do deal with this problem?

1) Try to buy radiator core parts from factory and try to make my own radiator?

2) Buy any radiator, disassemble it and make the required one?

3) Search for websites with ratiators that have specified dimensions and other technical characteristics? What are the most valuable specifications of heavy machinery radiators?

On the picture it's not a heavy machinery radiator, but still looks pretty much alike from the outer side.