April 26, 200520 yr What do the numbers stamped on top of the pistons refer to? I am thinking they are something to do with the "grade" but there are only 3 grades and I have piston/s that have "5" stamped on them. Anybody know??
What do the numbers stamped on top of the pistons refer to? I am thinking they are something to do with the "grade" but there are only 3 grades and I have piston/s that have "5" stamped on them.
Anybody know??