Block Drain Plugs - Coolant

07-27-2010, 10:54 PM

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Block Drain Plugs - Coolant

What material are these plugs made out of?

If it is brass, is it a specific kind of brass?

08-08-2010, 07:28 PM

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The one that takes the 17mm hex is brass.

Brass is an alloy of copper and zinc. I do not know the ratio being used.