Bump on an old issue. Just wondering if anyone with the BG revision can chime in on reliability? My old water pump was replaced back in 2015 with a BB version - I got the 19K5 coolant pump service action - but never acted upon it because i figured the pump was working well. Low and behold I've been leaking coolant over the weekend (expansion tank nearly empty) - Looked at service records and I was originally replaced with a BB version. Unfortunately the 19K5 service action ended in december 31st 2018 so I'm boned (even called VW of America to see if there's anything they can do - answer is no). Doesn't seem like too difficult of a DIY though, just gotta order the BG revision and some G12 coolant - Just sucks when you know it would have been covered but missed your window of opportunity