Dimensions
Diameter SpecificationsCylinder-to-piston clearance 0.02 - 0.03
Piston Identification
The following marks are stamped on the upper piston crown section (installation position):
Letter "E" in the middle (towards inlet), with change level ID (internal Mahle ID) to the right; the tolerance group (0, 1, 2, 3) is indicated to the left of the "E", and the weight class is indicated next to the tolerance group.
NOTE: The signs - - (minus minus) to indicate the weight group may also appear in vertical direction.