I'm having a difficult identifying a specific piston. I have a 5.7 alum LS1 out of a 2002 Camaro SS and when I pulled apart the engine one of the pistons was chipped. I'm having a difficulty identifying which piston it is so that I can find a replacement.


The piston has the following markings on the inside. "Mahle" "99L7++" 50-1" (in a little circle) and "5111".
It's a 3.89 diameter and is press fit to the rod. Has a coating around the piston skirt and has an accumulator groove.


I included some photos as well. If you're able to identify/steer me in the direction of a replacement I would be extremely grateful

 

http://www.development.itskentodd.co...cat_piston.pdf



Google is your friend! Found it and here's a link.

 

Mahle 224-3540