One genuine GM ACDelco Durastop rear drum brake wheel cylinder. GM 18039335 / ACDelco 18E428.  Shelf wear on packaging (see photos). Cosmetic surface corrosion on bare metal surfaces. Various Chevrolet, Oldsmobile, and Pontiac vehicle models 1997 thru 2005.

CHEVROLETCLASSIC2004-2005
CHEVROLETMALIBU1997-2004
OLDSMOBILEALERO2003-2004
OLDSMOBILECUTLASS1997-1999
PONTIACGRAND AM1999-2005

Check photos for cosmetic concerns before you buy. Check your VIN for correct fitment at your local GM dealer before you buy.