Originally Posted By: oil_film_movies
Originally Posted By: Motorking
Actually it does fit your late model 5.3. Your vehicle uses 22mx1.5 thread size and has the same location for the o ring. This issue is complicated. The 10575 fits many Ford and FCA vehicles that have much lower bypass, that is why we cannot just change the valve in the 10575. The PH12060 was released with the 22 psi bypass for GM 4 cylinders and then GM changed requirements for V8's as well.
Just because something "fits" the space doesn't mean its right to use. And its not really complicated. Very simply, Fram has been crossing the UPF64R with their PH12060, which is wrong since the UPF64R has a 35 psi bypass and the PH12060 has a reduced 22 psi bypass.
Not complicated, just confused by Fram's (and some other aftermarket company's) insistence on the wrong look-ups in some applications. Just weird really.
Mabye Fram and a few others should clean up their act? There's an idea. Call out the right part for the job for a change.
Currently the only Fram filter you can get to replace a PF63E application is the HP19, a very good choice in construction & efficiency, a tad expensive and not at Walmart though.
I have seen the 35psi quoted many times on many forums but have yet to see anyone post an email from ACDELCO confirming this, just some references to a non-ACDELCO site which listed a 35psi. Does anyone have confirmation directly from ACDELCO or GM that the UPF64R does in fact have a 35PSI bypass setting?