It's a Water Bonnet part, a latch I think. Is it used the latch the center window closed?
You might check with Stingray.
If you have no luck I can ask for you and see if the part is available and price...
Yes there is 2 and 1 is broke. I haven’t had any luck contacting water bonnet directly, possible because they were purchased by TaylorMarine. Do you have there contact phone number?If I'm not mistaken, that part is part of the hinge, I think there are two of them on the hinged side of the walk through window. I think if you slide both of those plastic things a certain direction it enables you to totally remove the pass through window. I have the same thing on my Lund.
I tried contacting Water Bonnet regarding a vinyl top I have. You need to look a bit, but get on their website, find something that says "contact us" which will be an email address. Include a picture of your part in your email.
They got back to me in a day or two.
So that I have all the info, your boat is a 2001 Stingray 190LS and the part you are looking for is the latch for the walk through windshield or the hinge?