Logo
FULL SITE MENU

What's this gauge for?

RoJo smith

RoJo smith

New member
This gauge is in the console of my, new to me, pontoon. The only conections on the back are the two wires for the back light, and a tube that is not conected. The tube runs to the back of the boat where it is also not attached.
20250520_075848.jpg
 
Hi, I honestly don't know but can take a guess.

First off, a Google search reveals that this is a gauge made by a company named KUS. They make several "lines" of gauges and sensors identified by alphabet letters like N L or R.
That one is a Q series that reads pounds per square inch (PSI)

SO....MY GUESS....
It might be a cooling system pressure monitor gauge. Lots of owners with larger horsepower rated engines will use a low pressure gauge like that to check on the "health" of their waterpump instead of just relying on watching the tell-tale stream.

If you know the pressure when the pump is new and at peak efficiency, a glance at the gauge can tell you if the pressure is falling off which could indicate a pump that is wearing out.

BUT....
I could be WAAAY off! Often am ;)
 
I don't know Bill....

...After I wrote that, I started thinking about it and my question is:

Would you run a tube of pressurized hot water like that up to your dash?

I think I would opt for a pressure transducer and an eletronic gauge.

But, who knows? I sure don't!

That IS how it was done back in the day with cars. And they ran the hot oil at 40 or 50 psi like that too!

Talk about a rude surprise if THAT spring a leak!!! OUCH!
 
I use copper line in my old car for oil pressure, also metal line for water temperature.

I’ve not seen a PSI gauge like that on anything- interesting.

IMG_0644.jpeg
IMG_0644.jpeg
 
The gauge in question is a Quicksilver (hence the Q logo) water pressure gauge Mercury/MerCruiser part number 79-825292 that's no longer available but could be seen in the following for sale links if image doesn't load below, https://www.2040-parts.com/quicksil...2-30-psi-nib-includes-fittings-wire-i1023994/

www.ebay.com

Mercury Marine # 79-825292a1 30 Psi Nos Final Sale ! Nib | eBay

Brand new gauge never been used 79-825292a1 nib What you see is coming to you Final sale not stocking these anymore Not returnable !!
www.ebay.com


https://www.2040-parts.com/_content/items/images/94/1023994/001.jpg
1747842490074.png
 
Thanks Fun Times! I stand corrected!

I fooled myself with the Google search about the Q but should have known better since I'm a long time owner of many Mercs in my time. Oh well, WRONG AGAIN. :/
 
Back
Top