380SL (107.045) V8-3.8L (116.960) (1982)
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Piston: Service and Repair
a Valve recesses
b Trough diameter
NOTE: As standard, the pistons are subdivided into six tolerance groups (group numbers). The following information is stamped into the piston crown:
1. Piston diameter e.g.. 96.505
2. Piston code number e.g.. 72
3. Group number e.g.. 1+
4. Direction of driving arrow
