Wuxi Sanyou Auto Electrical Factory Home / Products / Nikko Alternator / NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm
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NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm

This heavy-duty 24V 34A alternator is engineered as a direct-fit replacement for KOMATSU D65E (1994) and PC400 (1995–1997) equipped with the 6D125 engine. It delivers stable electrical output under demanding operational conditions, supporting critical systems such as hydraulic controls, lighting, instrumentation, and engine management.
Designed for seamless interchangeability, this unit is fully compatible with multiple OEM and aftermarket references — including WAI 12259N, LESTER 12259, KOMATSU 600-825-3120 / -3150 / -3151 / -3160 / -3161, and NIKKO 0-35000-0390 / -0391 / -0392 / -0402 / 01-35-2007. The 2-groove pulley (95mm diameter) matches original equipment geometry, ensuring proper belt tension, alignment, and longevity of the drive system.
Manufactured by SANYOU under rigorous quality standards, every component — from the rotor and stator to the voltage regulator and rectifier bridge — is built using 100% new, high-grade materials. The assembly undergoes dynamic load testing and thermal cycling validation to guarantee performance that meets or exceeds OEM specifications.
Backed by robust construction and proven reliability in field applications, this alternator is ideal for equipment owners, fleet operators, and service professionals seeking a cost-effective yet factory-equivalent power solution for KOMATSU excavators and dozers.
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  • NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm
  • NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm
  • NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm
  • NIKKO 24V 34A Alternator for Komatsu D65E & PC400 – Compatible with 12259N, 0-35000-0390, 2C95mm
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Wuxi Sanyou Auto Electrical Factory
Wuxi Sanyou Auto Electrical Factory

Our factory specializes in producing starters, generators, and spare parts for automobiles, tractors, and internal combustion engines. We possess advanced production and processing technology, complete equipment, and rigorous testing methods. Through years of hard work and entrepreneurship, we have gradually developed into a company of considerable scale and strength. Our "Xiyun" brand has gained considerable influence in the industry, and our products are sold throughout China. Some of our parts are exported to the United States, Canada, Russia, Brazil, and other countries, enjoying widespread popularity and praise from users.

Our factory currently has fixed assets of over 5 million RMB, working capital of over 4 million RMB, covering an area of ​​over 20,000 square meters, with a building area of ​​over 12,000 square meters. We currently produce DC starters and AC generators for construction machinery. Our main equipment includes 2 large hydraulic presses, 5 medium and small hydraulic presses, over 30 machine tools such as lathes, grinders, and milling machines, and over 50 sets of various specialized testing equipment. We have over 60 employees, including 3 engineers, 5 technicians, and 9 full-time technical personnel. Currently, the factory has an annual production capacity of over 150,000 starters, over 200,000 generators, over 150,000 armatures, and over 150,000 electromagnetic switches.

Our factory has a sound organizational structure. The factory has five management departments: quality inspection, technology, production, sales and marketing, and finance; and three workshops: generator assembly, starter assembly, and machining. Various organizational management regulations and training plans are being further improved to ensure high-efficiency and high-quality production.

Our factory passed ISO9000 international quality system certification in December 2000, was rated as an AAA-level credit enterprise in 2001, and passed IATF16949 certification in 2023. Currently, our factory supplies main engine manufacturers including Shanghai Diesel Engine Factory, Nantong Diesel Engine Factory, Guiyang Diesel Engine Factory, Wuxi Power Engineering Co., Ltd., and Tianjin Power Machinery Factory. Our factory will steadfastly implement the principles of "quality first, customer foremost, strict management, and brand creation," providing our customers with superior products through sincere service and excellent quality.

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