Can I replace only the mpg gauge on the instrument panel or need entire panel? on 1995 BMW 318i

strange whinning sound which I can feel in steering column when brake pressed and almost stopped. mpg gauge is moving to the 0 position. Dealer says that the problem is mpg gauge. Can this be replaced by itself or do I need to replace the entire instrument panel?

Asked by for the 1995 BMW 318i