For all 356 and 912 --- This is the special lock nut for the valve adjusting screw on the end of the rocker arms. Thread is 8 x 1,00 and it's 13 mm across the flats.
Tip: If this nut seems to thread too tightly over the rocker adjuster, the adjuster threads may have been distorted from over-tightening. Here's a link to a new adjuster screw: 369 05 243
Stoddard is not related to Porsche AG. The names "Porsche", "Carrera" and any other trademarks
of Dr. Ing. h.c. F. Porsche AG are used for identification purposes only.
Prices Subject To Change.