: Please always mount piston rings carefully. Piston rings made of cast material are only elastic to a limited extent and break relatively quickly.
Some pistons have trapezoidally profiled piston rings (so-called keystoner rings), these only fit in one installation position. If the ring does not move freely, please loosen it carefully and reinstall it turned 'upside down'.
Replacement piston for M318237, M318236, M3111140, 7673598, 7673599.
The endings of the part number 0-D indicate the diameter of the piston with a difference of 0.01mm each, where 0 corresponds to the smallest diameter.
The required diameter / piston size is marked on the cylinder.