Oil filter cross reference help

[Gary Schisler]

I have a Puralator L20033 oil filter that I cannot for the life of me remember which car is goes to. Does anyone have a parts book with an oil filter cross reference? I have four cars that I own plus two others in extended family that I maintain. The local FLAP doesn't seem to be able to cross reference this for me.

Thanks in advance.
Gary

[Duke W.]

Re: Oil filter cross reference help

My Fram catalog crosses it to a PH25 - 13/16"-16 straight thread. Lots of applications including GM and AMC. Interchangeable with AC PF-24 and PF-30.

Try the Web. Most manufacturers have online catalogs, cross-references, and buyer's guides (technical data and applications) now, and they are getting better all the time.

The Web is making paper catalogs obsolete.

Duke

[Gary Schisler]

Thanks Duke

That makes it an equivalent to one that will should fit my 72 LT1. I thought that the size and shape looked too big for anything else that I might use it on.
Gary

[Joe L.]

Re: Thanks Duke

Gary----

No, it will not work for a 72 LT-1 (or any other Chevrolet small block or big block gasoline engine). The L20033 is equivalent to the PF-24. The PF-24 has many applications but, primarily, it was used for old AMC, Buick and Pontiac V-8 engine applications.

While the configuration of this filter LOOKS like a PF-25, it will not interchange. I believe that the threads are different, among other things.

[Patrick H.]

Re: Thanks Duke

The PF-24 is also applicable to Oldsmobile, particularly the 1970 350 cid engine if nothing else.

Patrick

[Alan D.]

Re: Oil filter cross reference help

Joe is right about a PF-24 filter not being used in place of a PF-25 filter. I have experience with this. I bought a PF-25 filter and did not realize that it a PF-24 filter was in the box instead.
I started the car and backed out of the garage and noticed a big puddle of oil on the floor. Yep, the PF-24 leaked like crazy.
Al Dieterle

[Phil P.]

Re: Oil filter cross reference help

i think the gasket is inboard "L20033" vs the perimeter "PF25"---threads the same---since the a/c 2018 has switched to a shorter filter i have gone with an stp9100s---4x4 style "check valve" for reverse flow filter that is as tall as the older 2018 or if you will the pf35 for more capacity and filter element area

[Gary Schisler]

Aha! Mystery solved?

I sold a 77 Buick Electra 225 two years ago. I would guess that this is a leftover. Regardless, I will trash this filter since no other application currently sits in my garage or driveway.

Thanks to all of you who responded.

Gary