Series 23 AlternatorsThe Series 23 Alternators are small case alternators designed for applications requiring higher output at both idle and higher speeds. The Series 23 Alternators are designed to withstand the higher operating temperatures of heavy duty applications.

The Series 23 Alternator features:

  • Electroless Nickel Plating available in dual foot model
  • Special Hand Wound, high output stator
  • Special heavy duty, precision balanced rotor
  • Heavy duty, high speed bearings
  • Special high temperature grease
  • Heavy duty diodes
  • Long life brushes
  • 5/16" output stud
  • Directional fan
  • External regulator, preset and adjustable with braided loom
  • Sized right to allow for a bolt-for-bolt exchange in most cases
  • Specify pully desired


Alternators and Engines using 1" x 1/2" foot with 7.1" mounting center
Bukh Isuzu Perkins
Crusader Marine John Deere Pleasure Craft
Flagship Lehman (Ford) Prestolite Alternators
Grey Marine Motorola Alternators Universal 25, 30, 50
Hawk Marine Mercruiser Westerbeke 46, 4-107, 4-108
Indmar OMC Yahama


Alternators and Engines using 2" x 10mm foot with 6.6" mounting center
Delco 10 S1 Type Perkins 4-108 Volvo 2001-2003
Pathfinder Universal Atomic 4 Universal Diesels


Alternators and Engines using dual foot mount 3.15" separation , 7.1" mounting center
Chrysler (requires spacers) Mitsubishi w/1" spacer Westerbeke 46
Hitachi Alternators NAMNI Yanmar
Mercedes w/spacer Nippondenso (Note 1)  

Note: Engine mounting bracket must be modified

Nickel Plated - All critical metal surfaces incorporate an Electroless Nickel Plate finish which is far superior in a marine environment when compared to powder coating and the paint type processes.