Michael A

Is the part number for the LS1 UPF44 or UPF46? I am a bit confused, because PF46 is the regular oil filter part number, yet a see some people reference UPF44.

Also where can they be purchased? AC oil filters are very scarce in my area.

Michael

LoneStarFRC

44 = short version
46 = taller version

Either fits and works

Lothar34

On mine the 46 stuck out below the oil pan. That's not something I'm comfortable with.

LoneStarFRC

Lots of folks agree. Me too.

Mike98SilVert

UPF44
http://forums.corvetteforum.com/c5-p...staxi-com.html

runner140*

Michael, down here in south Florida, they can be purchased in any Walmart store and they are $4.57 each.

leadfoot4

I got one of those "Mobil1 oil change specials" at one of the auto parts chain stores. It was several quarts of oil and a Mobil1 filter. The Mobil1 filter must be the same size as the 46, because it also hung down about 3/8" below the oil pan. I used it last summer, but more or less kept a careful eye out for speed bumps, etc...

Michael A

Does the UPF46 exist anymore? When I punch it up on the AC Delco site, it doesn't show, but UPF44 does.