This MSparts 397-9953 12V 80A alternator is a high-performance aftermarket replacement part manufactured to strict OEM specifications. Built with premium internal components and heavy-duty housing, it delivers steady 12V 80A charging output, ensuring stable electrical system operation for long-term heavy-duty use. This alternator features outstanding heat resistance, wear durability and low failure rate, perfectly compatible with CAT 236D, 236D3, 242D, 242D3, 246D, 246D3, 257D, 257D3, 259D, 259D3, 262D, 262D3,