That is called an In-liner filter, or something like that. It bolts on in place of the oil distributor cover. Instead of returning filtered oil to the pan, the filtered oil goes to the rocker arm supply.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!