?Who knows ? .

You didn't include a link for us to check.....

Bosch universal water pump,E-bay. (Google search).
E-bay seller Autodetus (656).
Listed as-Engine auxillary water pump bosch 0392020034
fits 00-01 cadillac catera.
Other pumps available at lower cost,quality unknown.:confused:

My aux pump ('82 300D) hasn't worked for decades. But my heat works fine at highway speeds. So there must be more to the story than the pump simply being inoperative.

Thanks TF007. I bypassed my pump and removed it to work on. I now get heat at highway speeds (I think). Haven't really cruised at sustained speed yet but so far it seems o.k.

Hard to know at this point how critical that pump is to normal operation.

The aux. water pump was installed because of complaints,low heat at slow
engine speeds.
Parts of aux.pump (broken parts) can lodge in water ways,slowing flow,sludge
can also block.
Yes! some cars seemed to heat ok with out this pump.

Here's the link : https://www.ebay.com/sch/i.html?_from=R40&_nkw=0392020034&_sacat=0&_pgn=1

Looks pretty close to me, you'll have to make sure the rotation is the same, measure the hose nipple size for match (20MM) and cobble up a connecting wire from the old pump, easy enough to do .