OK, so this is a car-guy quiz. As far as I can tell, there is only one V6 engine series with an internal water pump. Some of this series (but not all) utilize this design feature. I am curious to see how many of you know which is the correct selection from the 7 choices above?
Here is a pic of the engine in question. The water pump is under the timing chain cover, driven by the timing chain. And, as you might guess, if it leaks it can easily ruin the whole engine.
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