Electronic Ignition Module
CTPA-21A307D Replacement Part to Fit:  John Deere "For Models: (4000, 4010, 4020, 4400, 7700 ALL W/ Delco Distr. # 1112466, 1112640, 1112624)" "FOR 6 CYLINDER ENGINES W/ DELCO DISTRIBUTOR Replaces Points & Condenser With An Electronic Module."  Price:  $93.53  Buyers Club Price:  $84.18