Temperature Sending Unit - Mercruiser Inline 6

[MercMonster]

Trying to find a temp sending unit for my Inline 6 165hp 250 CID. Found a couple of numbers on the part 12=V U10 --- 362-AJ. Gauge is a Stewart Warner. Stewart Warner doesn't recommend alternate use of gauge or sending unit with non-authorized part. Local NAPA can get the part, but the wait is late next week. Anyone else using a different temperature sending unit with a Stewart Warner Gauge. Do you have a part number to match up?? I may get stuck with waiting til next week w/ NAPA. Was hoping to hit the water this weekend. Any help on this would be deeply appreciated...

 

[Chris1956]

Re: Temperature Sending Unit - Mercruiser Inline 6

Monster, Temo gauge senders work on resistance. If you can find out the resistance range of the gauge or sender, you may be able to match it to a standard replacement sender.

 

[MercMonster]

Re: Temperature Sending Unit - Mercruiser Inline 6

Yeah, I guess I just thought maybe someone here had to replace theirs before and had one that matched up already. I found a thread on another forum that shows that Teleflex 1501371 & Datcon 02019 would also match up, but I can't even find a local supplier that has any of these in stock. If I don't hear anything else, I guess I'll just have NAPA order it tomorrow and suffer another week away from the lake.

 

[Big Boat Bay Buster]

Re: Temperature Sending Unit - Mercruiser Inline 6

I have been down the same road as you. I would suggest, since you are short on time, is to go to your local marine supply and pick up a matching set, gauge and sending unit from same make. Should not be all that expensive and a quick install. I started off changing just the sending unit. Didn't trust the readings, so installed another sender. Still no good. Installed a mechanical gauge to check for actual readings which confirmed my suspicions. I got pissed off, went to local store and bought a matching set-up. Readings matched mechnical gauge perfect. Learn a lesson from me.
Chris