Suggestions for a/c valve core assortment

I would always like to know
It's cheap insurance to replace them on a flat/unknown system, but I don't want to make it worse than it was when I started

Ford is weird, some models they cite serviceable cores, others with the same core they want to sell you the whole line
 
I can get this Santech for $9

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I can get these from Toyota for $1.28. Are high and low sides usually the same core?

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For that cost it’s a no brainer.

Anything I’ve recored has been the same, but obviously that’s not the rule. If you have a specific application, look at the parts diagram.
 
Anything I’ve recored has been the same, but obviously that’s not the rule. If you have a specific application, look at the parts diagram.
Parts diagram doesn't show them separate. Probably only sold with the line. Bought those Toyota cores and they fit perfect. Now I find the compressor has a huge leak from the shaft behind the clutch so dealing with that next.
 
Parts diagram doesn't show them separate. Probably only sold with the line. Bought those Toyota cores and they fit perfect. Now I find the compressor has a huge leak from the shaft behind the clutch so dealing with that next.
That core fits most asian vehicles, its a JRA core (Japanese refrigeration association). Most asian manufacturers only sell the cores with the lines, I found that toyota number once but I have no clue where I found it.
 
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