I am replacing my water pump. I have 2 bolts that are different than all the other short bolts. Does it matter where they go? I also found a connector down at the hose clamp for the upper hose. I don’t see anything it would connect to.
Water pump
- Thread starter Rondo
- Start date
IDIBRONCO
IDIBRONCO
Yes. Those two shorter bolts go into the very top two holes. Your new water pump should come with two new bolts that are meant to go into these holes. From your description of the location and your picture, my guess is that the plug goes onto the bottom of your fuel filter bowl. That's for your "water in fuel" light. If your have a one piece filter without a bowl, some of them have a place to use that same sender for the light, others don't.
The_Josh_Bear
Full Access Member
I'm pretty sure the longest two bolts(edit, it's the short bolts) go in the top two holes. But look it up-- the important part is getting it right. And you need to use black RTV on the threads as those two go into the crank case.
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IDIBRONCO
IDIBRONCO
There was a casting update where the two shorter bolts weren't needed. It's impossible to tell what you'll get these days. You can compare the old and new pumps to see if they use the same casting. If the are the same thickness, you can reuse all of the bolts. It's still best to use the new bolts that should have come in the box with your new water pump.
hacked89
Full Access Member
Original style boss height is .8” and uses the shorter 1 1/4” bolts, newer casting has 1.0” boss height and uses 1 1/2” bolts, you could measure the bosses. You can also probably use the 1 1/4” on either, I think it will grab with enough but it’s not something you want to strip while torquing and not having enough thread.
hacked89
Full Access Member
The last napa water pump I bought didnt even come with bolts
New bolts go in the top two bolt holes. Rest of bolts go in their usual spots. Bolt er up and do some burnouts.
