|Air Preparation Filters
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The AFF2B to 22B, AM150 to 550, and AMD150 to 550 models were in production from 1988 to 2009. They were replaced by the AFF2C to 22C, AM150C to 550C, and AMD150C to 550C models.
The elements are interchangeable and the element part number is the same for each body size. In addition, while the external surfaces are the same, the bracket mounting dimensions are different, so mounting is not interchangeable.
However, for the third-generation AFF, AM, and AMD-D series released in 2020 and the 2017 AFF, AM, AMD70D/80D/90D series, neither the body nor the elements are interchangeable.
The old AFF series catalog can be found here. The old AM series catalog can be found here. The old AMD series catalog can be found here. And the new AFF, AM, and AMD series element part numbers can be found here: Replacement filter elements.