The water pump on a 1989 420 SEL is growling, more predominately at startup. I'm thinking the bearings are a little worn and the pump needs to be replaced.

I got a rebuilt pump from the dealer, 116 200 17 01 88 but when I opened the box, the pump is a little different than the one on the car. My EPC says that is the right part number for the car. The new pump has a brass tube, coming out of the bottom of the shaft, angled down at 45 degrees towards the front, and the tube is about 1" long and a 1/4" in diameter. The pump on the car doesn't have the brass tube. The new pump casting has the number 117 201 10 01.

Its this the right pump? Should something be on or over the brass tube? If I leave as is, will coolant pour out the brass tube? Was the wrong part put into box?

When replacing the pump, the service CD indicates the distributor needs to be removed, but does not mention the harmonic dampener. Some posts here indicate the harmonic dampener needs to removed. Where is the harmonic dampener and does it need to come off? The big crankshaft fly wheel does have a notch.

Finally, do the gaskets go on dry, or should they be dressed with something?

Thanks for helping.

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1989 420 SEL