Never tried it on the small stuff like the bezels, but I've used an old-school can of Turtle Wax Chrome Polish on bumpers and trim (when it was chromed steel) with actually very good results.
Never something that was really deeply pitted, but for some more pitted stuff I used Evap-o-Rust and thought it made a nice difference in the size of the pits. Not a chrome treatment, but disolves some of the underlying rust, making the pits less notable. Some chrome polish on top of that might make a big difference.
Not like a new part of course, but I'm a fan of re-using the old original stuff even if it's bad enough to justify new.
Good luck.
How bad are yours?
Paul