- Joined
- Jul 10, 2022
- Messages
- 3,655
jmoymmv I do believe that on a water pump, Professional is different from OE (our OE water pump was made in Canada and had the 6 bolts). But not on air filters/cabin air filters, from what I have purchased....Aftermarket AC Delco is trash, I use OE AC Delco on GM vehicles but that's it.