The plug is plastic so it should not be to hard to drill out and remove. Note that it has a flaired head on it so that when you loosen it to drain it does not come out fully. It has a channel which allows coolant to drain out. Also, the plug drains SLOW!

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2003 X5 4.6is Estoril Blue
2005 Infiniti G35X
1972 Datsun 240Z
1991 Isuzu Impulse XS Sold
1972 Fiat 850 Spyder Donated
1972 Datsun 240Z Sold
1972 Datsun 510 Sold