Assuming a clever joke hasn’t eluded me here… there is clearly some text too blurry to read in the first photo. I’d call that a clue.
FWIW, this piece looks very familiar to me, but not as anything to do with my LC.
EDIT: check the rubber feet of your pressure washer. I’m not going out to my shed in the middle of the night, but I think this is where my sense of familiarity is.