Small Frame Diesel Alternator, Yanmar, 12 Volt, 94 Amp, 20025


Small Frame Diesel Alternator, Yanmar, 12 Volt, 94 Amp, 20025
SKU: 76778
Mfg# 20025
UNIT: Each
Description: Small Frame AlternatorRated Output: 94 ampVoltage: 12 volt
Typically Ships Out in 1-2 Business Days


Hi-Output Small Frame Alternator, Diesel Only, Yanmar, 12 volt, 94 amp, 20025.

  • New 12 volt direct replacement 94 amp alternator
  • Better price, higher output than original equipment
  • Dual foot, three-wire hook-up w/tach lead (same as OE)
  • Fits Yanmar, Perkins and many small diesel auxiliary engines
  • Replaces 55 amp Yanmar numbers 129772-77200 & 80 amp 119573-77200, 01, 129470-77200
    Replaces 55 amp Hitachi numbers LR155-20 & 80 amp LR180-03

For Diesel Engine Applications Only, NOT ignition protected, NOT SAE J1171 compliant, NOT for gasoline engine use.
(SAE J1171 compliance specifically deals with external ignition protection of marine electrical devices in gasoline powered marine engines.)



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Sterndrive Engineering offers a one (1) year fault free warranty on rotating electrical parts (Starters, Alternators, Trim Motors) and a one (1) year Limited warranty on all other parts (solenoids, voltage regulators, water pumps, etc.). These warranties do not apply to any repairs, alterations, or work undertaken by third parties not involved in the actual manufacturing of the product.


  • Restocking charge will apply at a minimum of 10% for all product returned.
  • All Returns must be returned within 30 days of receipt of the items.
  • Some products are non-returnable, please contact us for further details.
  • Manufacturer defects reported within 30 days of receipt will be supplied a pre-paid label for return shipping upon approval.
  • Please contact Go2marine for Manufacture Defects, Returns and help with Warranties.