How do I write the statement, "I hope the new parts work as well as they look." correctly?

I am writing a work email that will be seen by many. I don’t want to look foolish.
Here’s the background: The parts arrived and look beautiful. I hope they work beautifully, too.
How do I say it correctly or write a sentence that has similar meaning?
“I hope they work a good as they look.” No. Good is an adjective.
“I hope they work as well as they look.” No. They are not sick.

I’m a native English speaker and I don’t have the answer.
Any suggestions?