This is an AC Delco air filter for 1980's and 90's GM L4 4 cylinder engines. See the photos of the box for all 4 cyl. GM applications. Mostly for the 2.5L 'Iron Duke' 4 cyl. but a few applications for the 2.0 and 2.2 and even the 1.8 in the Pontiac Sunbird.
Buick, Cadillac, Chevy, Chevrolet, Oldsmobile, Pontiac