Originally Posted by
Dimkaps
Hi i have SLK 32 AMG ( M112 AMG) and i found out i have 3 broken pistons , i own a garage but i have no experience in MB . The pistons inside have code : 9044R0 ( NURAL) and a code below this. The problem is the code below is different between the pistons. i have 12.2 x3 pistons 22.1 x 2 pistons and 23.1 x1 pistons . So i would like to know which one is the correct ? How can i know if its a piston from a non AMG engine or an AMG ? please any advice is welcome.
The pistons probably have a number on them that shows what particular tool made them. Otherwise how would they know where a particular piston with a fault came from? This way they can isolate a tool with a fault. These pistons are forged so it is probably the forging tools number.
That would be my guess.
Another example would be plastic containers for butter etc, these have a cavity number on them as well as the part number so that a faulty mould cavity can be found.