OEM, Equivalent and Aftermarket Filters: What Is the Difference?
A matched equivalent reproduces the original. A look-alike only copies its outside. Here is how to tell them apart.
Who makes the OEM filter
Machine builders rarely make their own filter elements. Most buy them from filter manufacturers and sell them under their own part numbers, which is why the same element can carry several numbers.
Matched equivalents and look-alikes
A matched equivalent reproduces what matters: the media and its rating, the dimensions, the end caps and the seals. A look-alike copies the outside and fits the housing, but its media or construction may not do the same job.
What to ask a supplier
Ask how the replacement was matched: which media and rating it uses, and how its dimensions and sealing surfaces were checked against the original. A supplier who matches elements properly can answer both questions.