Alternator Yanmar 2YM15 | 3YM20 | 3YM30 | 3JH3E | 3JH4E | 4JH3E – 12V 60A

Description

Replacement 12V 60A alternator for modern Yanmar YM and JH series marine diesel engines — the leading sailboat engines of today. This is the alternator with internal voltage regulator and multi-groove pulley, as fitted on the 2YM15, 3YM20, and 3YM30, and on the 3JH3E/3JH4E/4JH3E inboards.

✔️ 60 amp charging output — more than sufficient for battery banks of modern cruising yachts
✔️ Direct replacement for original part number 128271-77200 — fits without modifications
✔️ Supplied brand new (no core exchange required) with internal regulator

Technical specifications

• Voltage: 12 V
• Charging current: 60 A
• Regulator: internal (IR/EF)
• Condition: new

Suitable for

Yanmar

• 2YM15
• 3YM20
• 3YM30
• 3JH3E
• 3JH4E
• 4JH3-CE | 4JH3-TCE | 4JH3E

Please note:

Before ordering, check the original part number on the dataplate of your current alternator. This 60A version replaces 128271-77200. The older GM/HM series (1GM10, 2GM20, 3GM30, 3HM35) uses a different 40A alternator — which can be found separately in our shop. When in doubt, measure the spacing of the mounting feet and compare the pulley (multi-groove) with your old unit.

OEM for reference

• Yanmar 128271-77200
• Yanmar 12827177200