Quote Originally Posted by LOVEMYRANGIE View Post
Hmmm... Square bowl and toroidal so could be a 4HE1T.
Measure the diameter at the skirt and the overall height and also the bowl measurement and I'll be able to tell you.
Dont think its a 4BD though due to the toroidal hump.

Andrew
These are standard 4BD1/6BD1 non turbo pistons. The bowl is exactly as it should be.
Turbo pistons (alfin) have steel inserts on the ring lands.