M8 owners.....Help!
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Club Member
Joined: Oct 2006
Posts: 1,582
Likes: 72
From: North East
M8 owners.....Help!
If you have never owned a twin cooled twin cam Harley you may or may not be aware of the issues surrounding the failed/failing coolant pump on the twin cooled Rushmores (2014-2016). On 8/30 Harley introduced a repair kit to address this issue that includes a redesigned coolant pump. The new coolant pump has been described as being very similar (if not identical) to the coolant pump on the 2017 and newer M8 twin cooled Harleys. I can't find where this question has been asked so I'll be the first(?). Has the coolant pump on the twin cooled M8s provided trouble free performance for the 2+ years they have been in use? Any info/insight you can provide regarding your experience will be greatly appreciated by the twin cooled twin cam community. Thank you
Cruiser
Joined: Oct 2006
Posts: 148
Likes: 6
From: Wilds of Oklahoma
I know with a stage 3 kit, my 2018 Limited Anniversary in very slow traffic, 100 to 110 degree weather has never missed a beat, no coolant loss or anything else. Its been traffic like that all summer with the construction on I-44.
Road Warrior
Joined: Jun 2010
Posts: 1,717
Likes: 35
I just replaced my pump on my 2015 Limited. 2 dealers had no knowledge of an upgraded pump. A M8 pumpnis vastly different than a twin cooled pump. Look at them both and compare at Ronnies HD online parts microfiche. No way an M8 pump will fit a twin cooled.
Road Warrior
Joined: Jun 2010
Posts: 1,717
Likes: 35
I stand corrected. Seems there IS a new pump and it is very similar to the M8 pump. HD redesigned not only the pump but the mounting bracket and all the hoses. Damn it ! I just replaced my old pump with the old part number 2 weeks ago!
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Club Member
Joined: Aug 2008
Posts: 21,680
Likes: 22,682
From: North Carolina
Ha Ha
Same bike, color and miles. Just had my 10k done Saturday. I believe I got mine a month or two ahead of you. You caught up with me!
I have not heard of any M8 coolant issues. My brother has a 2015 and he has not had any problems with the coolant pump.
Same bike, color and miles. Just had my 10k done Saturday. I believe I got mine a month or two ahead of you. You caught up with me!
I have not heard of any M8 coolant issues. My brother has a 2015 and he has not had any problems with the coolant pump.
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Seasoned HDF Member
Joined: Jan 2007
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From: Virginia
You have good taste, LOL! Its been a great bike so far.
