Hi, you are talking about the ports correct? Well the fittings itself are obviously the same for most if not all cars as one recharge hose fits all, and the low side port is somewhat bigger than the high side port, mainly due to the size of the pipes.

But just to clarify, what I was asking is the size of the valve cores that go inside the ports, not the size of the ports itself.

Thanks all the same.

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W163 ML230 EURO SPEC 1999
W124 300E 1986