Part # 7405761 L 7

[Brad]

Hello all.
          Can someone shed some light on this part # for me please? It's on a piston that is supposed to be 10 thou oversize but it's not stamped with anything but 7405761 with the L 7 underneath.
        I thought that all oversize pistons had the amount stamped on them  10  20 30 etc.
I have measured the piston with a cheap " plastic " set of verniers and they read at just under 3 inches which I think is standard bore.
   Thanks Brad.

[ACE]

G'day Brad,
I just checked my master parts book and 7405761 is standard for 48,50, FJ, FE, FC.
I'm not sure what the L 7 means though ???
Regards ACE  8)

[Brad]

Thanks ACE.
               I was sure it's a standard piston as the measurement seems to proves . But the tool I used was probably not the best.
  I don't know what the L 7 is for either but has anyone seen an oversized piston that is NOT stamped with the size? ???
                  Thanks Brad.