Just checked the dimensions, my filter outside measurements are 21.25x16.75x3". Checked the measurement of a Mopar replacement unit on line and it was 19.75x15.75x 2". So the one I have is larger. It came in a beat up Mopar box when I bought it and that Mopar logo on the box was used from 1972 to 1984. The trade mark under the logo was "Marca Reg" (trade mark), so it was made out of the US, probably Mexico because of Spanish. Maybe it was the original box, but what Mopar took a bigger air filter?