Denso AM880701 Alternator Assembly

This 12V 55A alternator assembly is engineered as a direct-fit replacement for John Deere OEM part numbers AM880701, MIU800942, and MIA884641. It utilizes a Nippondenso (Denso) IR/IF internal fan design with integrated voltage regulator. The unit features a B+ post output terminal and a T-plug connector for voltage sensing and excitation. It is driven by a single-groove pulley. The alternator is calibrated for 55 ampere continuous output at 12 volts nominal system voltage. Manufactured to meet OEM specifications for thermal endurance and vibration resistance in agricultural and landscaping duty cycles. Cross-references include Denso manufacturer numbers 101211-2200 and 101211-2201, Yanmar number 129052-77220, Lester 12351, and Stens 435-990. Compatible with Yanmar 3TNE74C, 3TNV88, 4TNE88, and 4TNV84T diesel engines installed in John Deere front mowers, wide-area mowers, and compact utility tractors.