Oring on the back of the water pump
 

Is this oring a common leak on the R60?
I replaced the water pump that was leaking 3 months ago now this oring is. Coincidence?
If you have had it leak, how hard was it to remove that pipe?
https://cimg4.ibsrv.net/gimg/www.nor...e38d88e8de.jpg

The o-ring(near the pump) does not leak most of the time the end pipe can crack and get a hairline crack in it. At the clip part to the waterpump i have seen that leak. Most of the time the clip is missing of after a water pump replacement the back end of the theromstat was not seated all the way in the water pipe.

DIY here: https://www.northamericanmotoring.co...hermostat.html

and Here: https://www.northamericanmotoring.co...stic-pipe.html

When removing the thermostat to replace the water pipe would be ok to only replace the thermostat gasket and oring?

Yep, you can do that since the thermostat housing is good. That way when you take it apart you will have new gaskets and not older gaskets that have been compressed.

That pipe is such a bad design, you think they could come up with something better. I will be doing the pipe and housing this weekend.

Yes you can replace just the o ring but I would replace all of it due to the parts cost vs the amount of work to do the job again, if and when the parts fail.