Thermostat chaos!!!

[John three sixteen]

Hello kind Chrysler outboard experts.
I have benefited from many of your expertise over the years but this is my first posted question-
I have a 105 with a model number tag that reads 10573 and I need a thermostat for it.
The motor was rebuilt by a guy who left the thermostat out.
The thermostats I have from later model motors aren’t fitting under the thermostat cover.

Thanks for any help and links you may have.

 

[alldodge]

Unable to find a 10573 but can find a 1057B
Do you think the 3 is a B maybe?

If so then a thermostat 443 which is 143*

Now if its a different year then it could be a 110* or 130*

https://maxrules.com/fixchryslercool.php

 

[Redbarron%%]

Are you sure you have the thermostat the right way around?

 

[John three sixteen]

It’s definitely a 3 but good thinking.
Maybe the left off a number and it’s supposed to be 15573???

I actually think it is the 110° because we have some of the 143° thermostats and they will not fit under the cover

Yes We are putting it the right side up.
But thanks that could’ve been the case

Unable to find a 10573 but can find a 1057B
Do you think the 3 is a B maybe?

If so then a thermostat 443 which is 143*

Now if its a different year then it could be a 110* or 130*

https://maxrules.com/fixchryslercool.p

 

[jerryjerry05]

The year could be a 1969?
This might be the part#

F528068​

or
18-3559
You might try Franz Marine he seems to have the
parts lists for the older Chrysler.