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Rear differential drain plug broke - please help
I need advice/suggestions/info please - what is the likely fix, what should it cost, where should I go (dealer or not), etc.
The drain plug appears to be a 24mm unit. It's "hollow" in that there's a small round/cylindrical magnet in the center, with the threads around the outside of the bolt. While trying to tighten the plug last night, it broke off. Approximately the top half of the threads are stuck in the hole and the rest of the threads are still on the bolt/drain plug.
The drain hole is 99% open (the drain plug head did NOT break off in the hole), so the fluid drained out.
I'm out of town now (Grand Rapids, Mich.) and only local Isuzu dealer is closed today. I want to acquire the part ASAP even though I cannot pursue a repair until tomorrow at the earliest.
I'm hoping that the broken-off threads can be removed from the hole (by some "tapping" procedure my dad described) and that the entire rear differential housing/drain pan/whatever the thing is called that the drain and fill plugs thread into does not need to be replaced.
Your help advice is appreciated.