Rotor (Delco)
CTPA-70225736 Replacement Part to Fit:  White/Oliver For Models: 66, 77, 88, 550, 660, 770, 880, SUPER 55, SUPER 77, SUPER 88, SUPER 99, 1800 SN <124395  Price:  $4.26  Buyers Club Price:  $3.83