Water pump part # 1977 70 hp evinrude???????

reddog349 · #1 October 23rd, 2005, 09:06 AM

I am trying to replace a water pump on my 1977 70 hp evinrude outboard . I got a part number a long while back from this forum and purchased the pump. After fighting the stuck impellor I discovered the new impellor houseing does line up with bolt holes. Im guessing its the wrong part (#0432955).What is the correct part number?

MCM · #2 October 23rd, 2005, 10:14 AM

The correct p/n is 0388351 which shows as being n/a

The correct housing p/n is 0386455, also n/a

Sierra doesn't have one that includes the housing either.

I did find this kit, click here, at this link, web page.

Good Luck

reddog349 · #3 October 23rd, 2005, 10:43 AM

Well it seems the houseing does fit however the impellor (old one) uses a wedge that slips in a grove on the shaft and the new one uses a wedge that works different.what the deal?And it wont get a good fit.

MCM · #4 October 23rd, 2005, 10:56 AM

Well the impeller is still available & should come with the key.

OMC p/n 0382547

Sierra p/n 18-3082

Joe Reeves · #5 October 23rd, 2005, 10:59 AM

I saved some of my old charts, the ones we used to hang on the walls to impress and assure customers that we knew what we were doing (grin). The chart pertaining to water pumps said this:

1974-1978 70hp Evinrude/Johnson

388351 superseded up to the following.

Impeller Kit - 389143 = Superseded to 438579

Housing - 390771 = Superseded to 436956

There was no complete kit for that engine.