Is Nissans radiator bottom outlet petcock the same exactly as the behr radiators?

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ie, If i have a nissans replacment radiator
and want to replace the petcock,
then can i pick up a petcock from the dealer?
I know top over flow thingy is not the same,
ie, incompatable. Where does one get Nissans radiator replacement parts?
This is on my 92 400e.

Thank you

 

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Yes, I went ahead and got one, did the exchange, they match perfectly.