Piston Identification

[Rapidtransit426]

Good evening. Looked all over the Internet but could not find the answer.

Have a couple pistons in different sizes with no part number. Only see a "408" marking on them all on the underside. They also have a narrower oil control ring than stock.

Trying to order a new set of rings. Want to know the brand of piston. Any ideas?

I can get pictures but was hoping the "408" marking stuck out in someone's head. Thanks in advance.

[on the rocks]

i know wiseco runs there part number on top of the piston. so if its a wiseco it should be there.

[Stickman400]

Got a pic of one of them?