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Alternator Yanmar 4JH80 – 12V 125A
- Delivery time 5-7 business days
- Up to 2 years warranty
- Exchange possible within 14 days
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Based on 4,5 kgDescription
Replacement 12V alternator for the modern Yanmar 4JH80 common-rail marine diesel engine. Direct replacement for original part number 128990-77250, with a high charging output of 125 amps — generously dimensioned for electrical systems with a bow thruster, refrigerator, and navigation electronics.
✔️ 125 amp charging output — the original high specification of the 4JH80
✔️ Direct replacement for original part number 128990-77250
✔️ Supplied brand new (no exchange core required)
Technical specifications
- Voltage: 12 V
- Charging current: 125 A
- Condition: new
Suitable for
Yanmar
- 4JH80
Please note:
This alternator belongs to the modern common-rail JH generation. The older 4JH variants (4JH2, 4JH3, 4JH4) use a different, lower-amperage type — therefore, always check the original part number 128990-77250 on the identification plate of your current alternator, or compare the multi-groove pulley and mounting dimensions with your old unit.
OEM for reference
- Yanmar 128990-77250
Specifications
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