Review on ACDelco GM PF64 Original Equipment Engine Oil Filter by Chad Blanchet

Looking at the many reviews here you might think it was the end of the world when 12696048 (now called 048) was the older one Filter 12640445 (now called 445). 445 - Traditional design oil filter. But 048 is being redesigned with some notable changes. Some kind of metal pan (with holes) is welded to the check valve. One person was confused and thought this filter lacked ADBV, but if you look with your own eyes and some light you can clearly see the nitrile ADBV underneath this shell. The threading suggests there may be a bypass valve on the thread that prevents dirt/debris from getting back into the engine. If you look down at the dome area, you will see a spring-loaded plastic plug. It could be another dome bypass valve or it's just adding stress. The biggest change, however, is the plastic electronics core. Electronic core plastic filters have been used in GM and Ford vehicles for many years, often in high performance vehicles. All vehicles use this 445/048 PF64 filter and GM factory equips these engines with the 048 type filter.