I think it's been alluded to by knowledgable sources in the thread already ---- but the notion of "OEM" for a model that was first produced over 40 years ago and last produced 23 years ago, especially for a manufacturer that's gone through 2 ownership changes since then is a bit laughable. If you're serious about "OEM" parts - you need to hunt NOS (new/old stock) parts. Anything manufactured recently, even if the current manufacturer is the same company as before (Bosch for example), has virtually no connection to stuff available from Volvo a couple of decades ago. Bosch has bought more alternative parts manufacturers over the decades than you can imagine....so just because it says Bosch on the box doesn't mean the same "Bosch" that built or contracted for it 25 years ago is building it today. The same is true for any supplier of size.