Window crank

This looks like the 39-171 and 39-172 to me, just go over the dimensions to confirm. One non-trivial difference though is that our replacements have an offset in the link arm; it does not appear that your operator has this feature. This honestly may or may not make a difference. You could try installing it to see. If it doesn't work, you could try re-positioning the bracket the link arm attaches to make up the difference. Let me know what you think.