I believe this gauge is correct for a 1954 Buick.

I am often wrong, so please verify.

Good Cosmetic Condition.  Tested functional.  Nice Chrome bezel

This is designed to mount from the rear / back of dash.

The hole needs to be approximately 3 3/8" to slide the bezel through.

Body / Case diameter is 3 3/8".

Comes with new Light Socket & Bulb.. last photo only.

Glass was removed (and reinstalled) to clean out dust.

Thanks for looking and Good Luck, Pete