The oven cleaner will remove the anodizing but may whiten or make "splotchy" patterns in the aluminum. It is very aggressive for this, probably too aggressive.
Eastwoood sells an anodizing removal solution that works very well, leaving the parts clean and bright. I have used it with excellent results.
A more "budget" way to do it would be to soak the part in un-diluted Castrol Super Clean ($5/Gallon at walmart) and check the part frequently. Since you plan to polish the part, this may work well for you.
Rob
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