ARCO Marine Zeus A275L 12V 1-2 in. Single Foot Alternator

The ARCO Marine Zeus A275L is a high-output 12V alternator engineered for rapid charging of large battery banks in marine, RV, military, and commercial applications. Optimized for performance at idle speeds, this unit features dual cooling fans and heat-shedding coatings to run 8–20% cooler than standard alternators, ensuring sustained amperage output.

Key Features:

• SAE J1171 certified and made in the U.S.A.
• Designed for use with an external regulator, such as the ARCO Zeus Bluetooth alternator regulator.
• Large frame size with 138mm stator and 16 rotor poles.
• Includes terminal block and P-type harness.
• Max cold output of 311 Amps at 9,000 RPM.
• Sustained hot idle output of 198 Amps at 3,000 RPM.
• Features E-Coat/Cerakote finish for heat dissipation.
• Standard 6-groove 49mm pulley included with mounting hardware.
• Weight: 14.9 lbs.

Mounting and Compatibility:

• Compatible with most domestic engine styles featuring a single 1" or 2" mounting foot, such as Motorola or Prestolite.
• Requires external regulation for operation.