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GMPD serviced a 'generic' open element air cleaner well into the '90s; probably what this is. Most swap meet vendors bought it complete from GM. We would buy the lid and base individually then add a $3 K-Mart element; our total cost was about $25 less than the GM assembly.
I recall they sold well
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Any of the over the counter units I've ever had didn't have the AC silk screened instructions on the backside. I agree everything in that auction is repro. Looks like someone got stung pretty badly on that one.