I just went out under mine with a flashlight and the calipers.![]()
It's a 3/4" oil galley plug. OR, a 3/4" freeze plug would also work.
The good news:
It should be an over the counter part at any auto parts store.![]()
The bad news:
You'll need to clean the hole with a rag, then tap the plug in with a hammer and a drift.![]()
Yeah... that exhaust pipe is in the way...![]()
...good luck!![]()