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tool drain plug
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  1. Dual Purpose Spark Plug Socket

    This worked great for removing the coolant drain plug on the side of 351C blocks. slide the ratchet side of the socket over the square plug and use th e7/8 wrench to turn it out of there. It felt like the 3/8 wrench was going to round off the plug. had to improvise. :0 :)
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