Subaru STi R-180 differential cover -- Inside view
Note magnetic drain plug, reinforcing ribs, and steel gastket with 'UP' tab covering breather hole to prevent excess venting of gear oil. Fill plug is also $100+ temperature sending unit.
Note magnetic drain plug, reinforcing ribs, and steel gastket with 'UP' tab covering breather hole to prevent excess venting of gear oil. Fill plug is also $100+ temperature sending unit.