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Buying a new oil cooler o-ring for my 98 Mazda 626 2L where I live is extremely expensive, I'm not sure that even the dealer ship has the right part and I can't seem to find a part number anywhere. I ran across this post regarding changing the oil cooler gasket on a Mazda MX-6 which uses a similar o-ring type gasket:

But yes, using the gasket off a regular oil filter does seem to work fine.

Anyone ever heard of such a thing?

Robert S. Barnes
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Since the O-rings in both applications are designed to be compatible with oil, material suitability shouldn't be a concern. As long as the O-rings share the same size and profile, the two should be interchangeable.

Zaid
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