Replacement wiring harness and grommet for alternator stator. The rubber grommet on the alternator wiring hardens over time and causes oil leaks. The best fix for this is to replace the grommet. In most cases the wiring loom is also well past its prime and it is best to replace the lot.
Models: 72-75 Z1, 76 Z900, 77-78 Z1000 A1-A2, 78 Z1R D1