FowlerMotorsports

iTrader: (1)

So I am having trouble trying to research these pistons I have and cant find anything with the part numbers that are stamped on them. On the top of the piston reads E22 FM 81028B. On the inside of the piston I have AE425P 81025B. I believe these are Federal Mogul but nothing comes up. Anyone have any ideas?

FowlerMotorsports

iTrader: (1)

Still have these and considering trying to use them if I can get more information on them. Anybody know of federal mogul having 5.3 flat tops?

G Atsma

You might give WS6store a call; they are a vendor/sponsor . They handle a lot of different parts and might know what you have. It can't hurt.

JoeNova

AE425 is the alloy they're made from.
FM is most likely Federal Mogul.

FowlerMotorsports

iTrader: (1)

So I figured these are just a cast aluminum flat top piston and I am most likely better off running the stock 5.3 dished piston. I will provide a few photos shortly