




Hi all,
Hoping someone here might be able to help.
I'm trying to replace the T-fitting that connects to the block on my 2007 Moomba LSV with an Indmar 325 Assault engine. It's part of the V-drive oil drain system.
My old oil pressure switch snapped off during removal (of course), leaving the threads stuck inside the T-fitting. We weren't able to get the broken threads out, so now the whole T needs to be replaced. I have the replacement oil pressure switch (I was trying to swap this in), just can't find the right T-fitting anywhere.
This has turned into a bit of a mess, and I'm hoping someone here has dealt with it before or knows a source. I've emailed Indmar and Skiers Choice but figured I'd ask here too.
Photos: https://photos.app.goo.gl/KEPX9cXc9mCYLEzs9
I really appreciate it - Thank you!
Last edited by meech; Yesterday at 05:40 PM.
oil pressure sending unit tee.
Search this exact thing and you will find all kinds. You need to know the thread size and type.
1/4" NPT is typical for GM which is the basis for that Indmar engine.
If you have a good auto parts shop or engine shop near you they will have one in stock for $20
2015 Moomba Mojo Surf Edition
4,000lbs
Manual Flow
Thanks @Holdmybeer - I really appreciate the quick reply.
I looked into the 1/4” NPT tee options, but my setup seems to be a little different. The fitting that screws into the block is actually a compression fitting that sits inside the bottom port of the T, not threaded into it like a standard NPT. The T-fitting itself has to accept that compression fitting on the bottom (then the T screws into the block), with the side ports going to the oil drain hose and the pressure switch.
So the generic NPT tees, I don't think, will work...? I'm a novice on all of this, so learning as I go.![]()
I’ve posted some photos of the original assembly here: https://photos.app.goo.gl/KEPX9cXc9mCYLEzs9
Thanks again for your insight/thoughts on this.
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2007 LSV