Re: Threaded hole above water pump housing on Johnson TD 20? Home › Forum › Ask A Member › Threaded hole above water pump housing on Johnson TD 20? › Re: Threaded hole above water pump housing on Johnson TD 20? reivertomUS Member - 1 Year (includes $3 online payment fee)Replies: 790Topics: 40 January 14, 2018 at 4:06 am #69661 The uglier they are , the better they run…. :^)