UM40945 Internal Voltage Regulator--Replaces 1052023M91

Replaces number 1052023M91, 1039664M1 & Delco 1116387

MF models using Delco alternator with internal regulator

Fits: 230, 235, 245, 255, 265, 275, 285, 1085, 1105, 1135, 1155, 1500, 1505, 1800, 1805, 2675, 2705, 2745, 2775, 2805
Industrials: 20C, 30B, 30D, 40B, 50C