The Napa brand part that I got, is aluminum . . . the dorman part is also a metal part. Pretty sure that the spring won't have enough strength to break the metal versus the original plastic . . . here is the OE pink plastic piece - the white spot is where the little hook piece broke off - this holds the one end of the spring . . . no spring, no movement !! . . . hence replacing with metal version as upgrade !!

Gotta admit I was lucky to have happen while parked in the garage at home !! . . .