View Full Version : Raw Water Pump 1997 ProStar 190

06-09-2013, 05:42 PM
I'm trying to find a new Raw Water Pump for my 1997 ProStar 190.

I'm about 80% sure I have a LT-1 motor but I'm not sure how to confirm that.

Anyone know of a good place to buy one of these? I'm having trouble locating a part number. Any input would be greatly appreciated.

These are the only place I've found so far. I'm nervous that I'm going to end up with a rebuilt one.



Thank You.

Table Rocker
06-09-2013, 06:12 PM
I'm 81% sure you don't have the LT-1. The difference between the LT-1 pump and the TBI pump is the mount/pulley. The LT-1 pump has three holes, the TBI pump has several (6?) holes. It looks like your pump has 6 holes.


If you have an LT-1, your spark arrestor will be on the front of the engine and you should have plastic injector/fuel rail covers that say "Corvette".


06-09-2013, 06:45 PM
Yes, it does have 6 holes. Here are some pictures of the engine. Vortec 350? It appears that the person who sold me the boat has misinformed me. Thank You.

06-09-2013, 07:12 PM
Not an LT1 and I'm 100% sure of that.

Engine Nut
06-09-2013, 07:13 PM
If that is the pump that came off your engine, you do not have an LT1. The mounting flange that attaches to the engine on an LT1 or LTR only has three mounting holes. All the other engines use a flange with six holes although only three are used. The Indmar P/N is 685001-1. You can get one from inboardonline.com

06-09-2013, 07:16 PM
Sweet, thank you so much.

Table Rocker
06-09-2013, 08:09 PM
Don't feel bad about having the TBI, it's still a great engine and will do everything you want it to do.

Welcome to TeamTalk, a great resource for all your MasterCraft questions. Sooner or later we all have something to figure out on our boats, and the answers are fairly easy to come by on here.

Now let's see some pics of that boat!

06-09-2013, 09:21 PM
I have a list of things to do to the boat.

I've already had to put in a new knock sensor. And put in a new radio.

The bow light needs to be replaced, simple enough.

My fuel gauge always says full, so the float is possibly stuck. I have to fill it up every time I take it out.

One of the speedometers is broken. Water was pouring out of it so I had to put a golf tee in the tube that connects to it, until I can locate a new one. I'm pretty sure the company that made my factory ones is now out of business so I'll probably just buy two new ones.

And I'm not sure what it's called? Transmission cooler? It's before the raw water makes it to the raw water pump, there's a filter/strainer in it that I occasionally find pine needles in. One of the ports is pinched from over tightening the exit hose and probably reducing water flow.

It's depressing that there's this many things broken, but nothing serious. One thing at a time, and the leaking raw water pump is numero uno. So glad I found Team Talk.

Table Rocker
06-09-2013, 10:21 PM
Looks great to me. I like that burgundy color too.