4020075 3026430 T63B4 obsolete, replacement TS63B4;. TS63B4 (4072747) 4003465 (NMRV050 50, 0 160*14 25 U MV);Schnecken=PAM NMRV / 050 / 4002770 (NMRV040 100, 0 090*11 18 U MV);Schnecken=PAM NMRV 4025808 5255002 TYPE NMRS 041 OBSOLETE NMRV-P063. (4172266) NMRV-P090. NMRV-P063 40, 0 25 U MV+TH80B4;. NMRV-P075 20, 0 28 U MV+TH90L4;. NMRV-P090 15, 0 35 B3 MV+TH90L4;. Nr 971003, replaced by : 4025562 or 4025552;Variator motor 4025562 4025552