I was looking at oil filters at Rock Auto and came across one that simply said Bosch, the part number and then the words OE Equivalent instead of Premium. So I figured I would buy one cut it open to see what it was built like. The box says Premium Oil Filter but does not say Filtech filtration system and says OE fit, application specific design instead. No mention of efficiency rating. It is also Made in Germany and not made here in the USA.
Here are some pics.
Bosch OE Equivalent
Base End
Filter
Leaf Spring
ADBV
Here are some pics.
Bosch OE Equivalent
Base End
Filter
Leaf Spring
ADBV