OK, but what is the difference between a AC Delco PF63 and a PF63E ? looks like it is a little longer ? And I didn't want to start a useless "Yeah's mines better" sort of thing. Sorry I thought it was a harmless question.
ACDelco's latest design, the "E-Core". It's made up of more easily recyclable components, therefore, is more eco-friendly.
From teh interwebz:
- Is 6-12% smaller in size, while maintaining the same filtration media area, when compared to traditional filters.
- Has 10 times more open area than a traditional metal core for improved flow
- Has a non-metallic cartridge that can be crushed to remove oil and can then be used as an energy source
- Compared to a traditional core, it has a lubricity gasket for reduced installation torque
- Dual-flow concave baseplate with high lubricity gasket (if required).
- Has a nylon core for higher strength and better flow characteristics when compared to a traditional metal core
- No metallic components on “clean-side” of filter media, therefore eliminating possible metallic contamination
- Synthetic end caps are ultrasonically welded to help prevent media blocked by adhesives used in traditional filters
- Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
The original E-Core design had some design flaws that scarred it's reputation. The design has been improved and it may be a great filter now. If you're buying one, look at the black nylon ("plastic") cage on the inside to see if the spacing between the ribs is smaller (more ribs) or larger. I couldn't find any good "old" or "new" pics online for comparison.