Alternator Lucas 20ACR (cars with air condition) - Series I from October 1971 (USA and Canada Exports from September 1972), Series II to August 1976
Series I: all countries except USA and Canada: 4.2 models from engine no. 7L42595, USA and Canada: 4.2 models from engine no. 7L58469. Series II: all Jaguar 4.2 short wheel base Saloons, Jaguar 4.2 long wheel base Saloons to 2T63262 (LHD) and 2T18333 (RHD), Jaguar 4.2 Coupe to 2J52782 (LHD) and 2J2393 (RHD), Jaguar 3.4 to 3A50932 (LHD) and 3A3736 (RHD), all Daimler 4.2 short wheel base Saloons, Daimler 4.2 long wheel base Saloons to 2S50288 (LHD) and 2S7885 (RHD), Daimler 4.2 Coupe to 2H50050 (LHD) and 2H1818 (RHD), Daimler 3.4 to 3B50003 (LHD) and 3B2379 (RHD), Vanden Plas to 3C50002 (LHD) and 3C1417 (RHD).