The winterization kit for my 150B is showing not just the front cowl cover but also a "scoop-air intake" 0450266-1, which looks like it would be riveted to the carb heat intake. See attached diagram.
My plane doesn't have it. Are these parts to be used in conjunction?
I have of course flown with the baffle and so have prior owners, with no ill effects noticed on the carb heat function.