Originally Posted by LX2DR

Hey guys, my pump crapped out recently and here in Australia it cost AU$635.00.
Just reading some of the comments i can add from what i have found with the issue.
The pump died on our way out for a 5 day long weekend, temp light and engine lights both on.
I stopped and checked the coolant level, all semed OK.
Kept riding and did 800 odd klms for the weekend with the only issue coming late on the way home when it got warmer and power dropped off a bit.
One comment above is the pump slipping on the magnetic drive, this is not possible unless the magnets fail, the strength of those suckers is amazing. (I dismantled the thing after i got a new one)
The water pump itself is a brilliant design, it's what i call a fishtank pump, no seals, completely encapsulated, so its impossible to leak out.
As to the Bosch one, it certainly looks close (pump looks identical) except for the motor casing doesn't look sealed, the HD one is so well sealed you have to destroy it to get it apart.
Once at home i removed the pump from tje motor and found, the motor has 6 poles, mine failed to start on one, if i rotated the shaft to any other pole it worked again, if you could just get at it while assembled you could kick start it!
Certainly the Bosch one could be a breakdown replacement but might not last long if you are riding in wet weather?
P.S. if the pump isnt running, the radiators and pipes are cold, so the fans wont be switched on, easy to be side tracked by them not running as being the issue.
Hope this adds to the knowledge of this issue.

Originally Posted by ROCKOUT Rocker Products

One unknown is the flow rate of the stock unit. I can see moving the water through too fast, or too slow could be a problem.

Maybe they're all the same

__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters

Originally Posted by Bluehighways

I've got a bit over 16,000 miles (~26,00 km) on my 2015 and so far no water pump failures.

But between all the folks who have experienced a failure and that Harley redesigned the Water Pump and the computer logic that controls it for the 2017 model year, I'll not be surprised if/when mine goes out.

I've gone so far as to price a new one from Harley and "save" it on a couple of the on-line Harley Dealer web sites: The Harley Part Number for my bike is 26600012. Roughly $310 seems to be the lowest price out there.

However, the Harley Water Pump looks exactly like a Bosch Inter-cooler Water Pump that is used on an awful lot of turbocharged cars. These Bosch Water Pumps go for around $60 to $80. I can't be the only one who has noticed this. Looking at some Bosch information it appears that one or more of the following Bosh Part Numbers might be an exact replacement: 0392020024, 0392020034, 0392020039 and 0392020064. The physical external dimensions of the pump and the size of the water hose fittings would be the only deal breakers. It might even be that the wiring connectors are the same, although that could be easily handled.

See the attached Bosch Catalog and the pictures.

Someone somewhere must have walked through a WD's warehouse and seen if any of these match up.