23A323 Fits John Deere Tractor Fits Delco AlternatorOne New Aftermarket Replacement Fits Delco Alternator that Fits John Deere Tractor Models: 4000(S N 263481> w Air), 4020(S N 263481> w Air), 4040(w o Cab), 4050(w Roll Grd), 4240(w o Cab), 4250(w Roll Grd), 4440(w o Cab), 4450(w Roll Grd), 4640(w o Cab), 4840(w o Cab), 7020(S N 002264>), 8430(S N 004800 006278), 8630(S N <008619) (YR. 73 72) Replaces 1100170 Dim A (1) 37 Dim B (2) 12 Dim D (4) Fits Delco Remy Type Fits Delco V A 12 100 This alternator