Elastic locking nut for the timing pulleys on the camshaft and layshaft
Fits from Pantah onward. Note there is a larger nut used on Testastretta onward.
This part is a 14mm thread. The large nut is a 17mm thread
Alternate P/N 70350062A 729441542 729431542 729431452 70350061A 70350064A