Next to nothing is made in the US anymore
That's actually not true. It makes a nice soundbite on angry-white-guy AM talk radio, but in fact the US remains the world's largest manufacturer, at about $1.7 Trillion compared to China's $1.3 Trillion (2010). And, as we might recall from the USSR before it collapsed, Communist nations have a habit of exaggerating their economic output.
Even if China did manufacture more than the US in nominal terms, making a big deal out of that would still be propagandistic; US manufacturing output per capita is still much larger than China's, in part because US workers are more productive. (Per worker, the US productivity advantage is enormous; wages here are correspondingly higher, but you get what you pay for.) The size of the US manufacturing sector
is going slowly down, while China's is indisputably growing, and if we take their numbers at face valu, China will indeed take first place in the next few years. But even looking far into the future, the US manufacturing sector will be a long way from "nothing".
Here is a website that helps you find stuff made in the USA.
With all that said, I would not hesitate to use a Japanese- or Korean-made water pump on my Mopar. However, I would go to great trouble and expense to avoid using a Chinese one.