English
This 24V 35A alternator restores reliable charging for vintage Komatsu D20, D20A, D20P, D21, D21A dozers and PC300-5 excavators powered by the 6D125 engine—machines still in active service in agriculture, forestry, and small-scale construction worldwide.
It replaces original Komatsu units, including 6008215341, 6008215411, 6008216150, RKD25A04, and Nikko 0330005840 / 0334112870 series, with an identical mounting footprint, connector position, and 2-groove pulley interface for straightforward field installation.
Manufactured by SANYOU, this unit is built for longevity in low-hour, maintenance-sensitive applications—where consistent idle charging and resistance to moisture ingress are more critical than peak output. Ideal for owner-operators and rental fleets, extending the service life of proven legacy equipment.
Mounting Dimensions
Specifications
OEM NO.
Applications
| Specifications | MFR | NIKKO |
| Voltage | 24 | |
| Amp. | 35 | |
| Grooves | 2 | |
| Pulley |
| Producer | Number |
| HC-PARTS | JA790IR |
| KOMATSU | 6008215341, 6008215411, 6008215441, 6008215540, 6008216110, 6008216130, 6008216140, 6008216150, 6008216190, 6008612110, RKD25A04 |
| NIKKO | 0330005840, 0330005850, 0330005880, 0330006580, 0334112850, 0334112870 |
KEEP IN TOUCH
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, OEM Nikko 24V 35A 2PK Alternator for Komatsu D20-D21 & PC300-5 – Compatible with 0330005840, JA790IR, 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. Wholesale Nikko 24V 35A 2PK Alternator for Komatsu D20-D21 & PC300-5 – Compatible with 0330005840, JA790IR. 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.
The Alternator's Role Across Vehicle and Equipment Categories Every internal combustion engine platform — from a passenger car to a 400-horsepower combine harvester to a mining-class excavator — depe...
READ MOREWhy Alternator Requirements Vary Across Heavy Equipment Categories Truck alternators, agricultural equipment alternators, and construction machinery alternators share the same core function — convert...
READ MOREWhat an Alternator Actually Does in a Vehicle An alternator is the primary charging component in any vehicle's electrical system. While the battery provides the initial burst of power to start the en...
READ MORE