We've taken our Patent Pending Extreme Duty Dual Rectifier version of the CS-144 type alternator which normally comes as an internally voltage regulated alternator, we remove the internal regulator then attached a terminal strip to the rear of the alternator allowing you to connect an external voltage regulator. These units come with two field connections so you can use them with either an A or B circuit type voltage regulator. Use of an external regulator allows for greater control by implementation of an adjustable voltage type regulator.

This alternator is designed for *Diesel Marine applications where a heavy duty alternator is needed along with an external regulator. 

Can be ordered with a variety of pulleys with 17 mm center hole, including 4,5,6,7 and 8 groove serpentine type or  3/8, 1/2 and 3/4 inch wide single V-belt type or with 1/2 inch wide double V-belt.

* This alternator is NOT spark arrested and is NOT Coast Guard Approved for gasoline engine use. DIESEL MARINE USE ONLY