M113K Piston Ring End Gap - Factory Measurements
STOCK OEM MEASURMENTS:
Top Piston Ring Eng Gap = 0.020” or 0.50mm
2nd Piston Ring End Gap = 0.026” or 0.65mm
Please see the link listed below for my M113K Piston Ring End Gap post on the S55 group section of the board(I didnt want to upload multiples of the same
pics throughout the board):
https://mbworld.org/forums/s55-amg-s65-amg-s63-amg-w220-w221/888296-m113k-piston-ring-end-gap-measurement.html


