Alternator 12V 136A for Dodge Ram 2500 3500 5.9L Cummins 121000-4280 13766N

New aftermarket 12V 136A alternator designed for select 1999–2000 Dodge Ram 2500 and 3500 pickups equipped with the 5.9L Cummins diesel engine. This alternator features clockwise rotation, an 8-groove serpentine pulley, internal fan design, and external voltage regulation. It replaces commonly used part numbers including 121000-4280, 56027221AB, 13766, 13766N, 400-52032, 113362, 12080, and ALT-6096. Before ordering, compare your original alternator’s part number, mounting points, electrical connector, pulley groove count, voltage, amperage, and regulator type with the product photos. Fitment may vary by production date and previous vehicle modifications. Professional installation is recommended.

• 12V 136A ALTERNATOR: New aftermarket alternator with clockwise rotation, internal fan, external regulator configuration, and an 8-groove serpentine pulley.
• DODGE RAM FITMENT: Fits select 1999–2000 Dodge Ram 2500 and Ram 3500 pickups equipped with the 5.9L Cummins diesel engine.
• REPLACEMENT PART NUMBERS: Replaces Denso 121000-4280, Chrysler 56027221AB, Lester 13766, WAI 13766N, Arrowhead 400-52032, Cargo 113362, Remy 12080, and ALT-6096
• IMPORTANT SPECIFICATIONS: 12-volt output, 136 amps, clockwise rotation, 8-groove pulley, approximately 60mm pulley diameter, and external voltage regulation.
• VERIFY BEFORE ORDERING: Compare the original alternator number, electrical connector, mounting ears, pulley grooves, regulator type, voltage, and amperage with the listing photos. Vehicle fitment may vary by production date.