ATG20358 Alternator 3934778 3675256 321-767 3675256RX 8099 8566 for Cummins QSB5.9 CM850 Part Numbers AC DELCO: 321-767 ARROWHEAD: ADR0238 CUMMINS: 3675256RX, 3934778 DELCO: 10459304, 10459316, 19009957, 19009958 J & N: 400-12184, 400-12184R, 400-12301, 400-12469, 400-12237 LESTER: 8099, 8566 Product Description This premium aftermarket 12V Alternator is designed as a direct replacement for Cummins QSB5.9 CM850 diesel engine applications. With 105A output, clockwise rotation, internal regulator (IR), and external fan (EF), it delivers reliable charging performance and dependable service in demanding industrial and heavy-duty applications. This alternator replaces OE part numbers 3934778, 3675256RX (Cummins), 321-767 (AC Delco), 10459304, 10459316, 19009957, 19009958 (Delco), and cross-reference numbers ADR0238 (Arrowhead), 400-12184, 400-12184R, 400-12301, 400-12469, 400-12237 (J & N), 8099, 8566 (Lester). Replacement 130A 19SI Unit. B+ Terminal: M6-1.0. 3-Wire Configuration. Blade "I" & "R" Terminals. 5mm Offset in Mounting Spool. See below for various 19SI units. 12V alternator 105A amperage Clockwise rotation Internal regulator (IR) External fan (EF) 6 o'clock clock position Direct replacement for Cummins diesel engine Aftermarket replacement part Approx. 7.8 kg Specifications Item Condition: Aftermarket Part Unit Type: Alternator Voltage: 12V Rotation: CW Dimension: Replacement 130A 19SI Unit; B+ Terminal: M6-1.0; 3-Wire Configuration; Blade "I" & "R" Terminals; 5mm Offset in Mounting Spool Amperage: 105A Clock: 6 Regulator: IR Fan Type: EF Fits: Cummins Diesel Engine Weight: 7.8KG Fitment Cummins – QSB5.9 CM850 Diesel Engine Compatible with equipment using 3934778, 3675256RX, 321-767, or ADR0238 alternator part numbers. Key Features Product Type: Alternator Voltage: 12V Amperage: 105A Rotation: CW Regulator: IR Fan Type: EF Clock: 6 Application: Cummins QSB5.9 CM850 Diesel Engine Weight: 7.8KG Replacement Type: Aftermarket Replacement