R53901133
All 356/912 engines have a steel plug in the bottom of the engine case to drain the oil. This plug has metric tapered threads and no seal ring is needed.
G53901133
This part has changed to PCG00113300.
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RNLA01133
Oil drain plug, fits all 356 & 912.
Fitment: 356 1950-64, 912 1965-69