This is for a truth lock. The numbers on the lock are 45081, 21289 & 31401. The number on this plastic piece is 40773
Bob from SWISCO responded:
April 3, 2019
Thanks for posting. To start, see our 38-131 and its opposite-handed version, the 38-130. Is this possibly what you're looking for? Review the dimensions on the product pages in comparison to your old part, and see what you think.