I am trying to remove an alum plug from an alum water pump. The previous car did not have a heater so I plugged it. It is flush and has a 3/8" allen head socket. I have tried WD40, tapping with a hammer, and tightening slightly. The thing will not budge and is trying to round out the socket.
Thanks

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67 Malibu 454/TH350
Team Chevelle Gold Member #97
Charleston, SC

If you didnt use anti sieze when you installed it, I bet it is a permanent fixture and will not be able to be removed without drilling it out. This is one problem when working with aluminum components.

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70 chevelle ss396 conv
66 chevelle ss396 hdp/conv
55 chevy prostreet
69/71 camaros

slap a little heat to it,NOT MUCH,but some,remember this is a soft metal.miiiiiight work!67RAT member #199