Aftermarket ATG10543 Alternator for PENTA Inboard & Sterndrive 2003T 431AB A13N147M A13N148M 2518039 3803227-2 Alternator with 12V voltage, 35A amperage, clockwise rotation, 7-clock position, and internal regulator.Designed as a replacement for.Fits various marine engines including PENTA models 3803227-2, 834625-6, 841378-3, 841380, 841762, 841763, 841765, 841766, 841766-9, 842765, 858838, 858838-6, 858839, 858839-4, 872018-7, 872926-1, and 2518039.Also compatible with reference numbers 431AB, A13N147M, A13N148M, IA1438, MG77, V439181, V518039, 100605, 100606, 103141, A13N1M, A13N259, A13N259M, A13N2M, A13N35M, A13N57M, 18-5943, 18-5959, 4-5959, 13059, 13068, 14052, 14987, 110048, 111397, 612H0240, 400-40044, 20020, and 20020-0.Suitable for use on Penta 2002 and 2003 T diesel engines from 1983 to 1990, Bukh DV10, DV20, DV36, and DV48 series marine diesel engines, and other applications requiring specified alternator characteristics.