ARCO Marine Zeus A225S Vortec Alternator with Terminal Block

Zeus A225S Vortec Alternator with Terminal Block

The highest power output alternator in its size/class.

Features:

• Engineered for High Energy Production.


• Suitable for Marine, RV, Military, and Commercial applications.


• Rapidly charges large battery banks.


• Coolest operating temperatures for increased performance. Runs 8 - 20% cooler than incumbent alternators due to:


• Heat shedding coatings


• Rectifier located on housing exterior


• Dual cooling fans


• OEM Components


• Optimized for performance at idle speeds.


• Reduces the need for a generator by creating additional power with your engine.


• Unleash peak performance with E-Coat/Cerakote. Our advanced coating absorbs less heat, keeping the A225S cooler. This translates to more amperage for sustained periods.


• For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator.


• SAE J1171 Certified.


• Proudly made in the U.S.A.

Technical Specifications:

• Voltage - 12v


• Field Type - P


• Rotor Poles - 16


• Stator Size - 130mm


• Frame Size - Small


• Weight - 12lbs/6.7kg


• Regulation - External Only


• Output Voltage - 14.1v (default)


• Finish - (Black) Cerakote or E-coating


• Cut-In RPM - 1,061 Alternator RPM


• Maximum Alt RPM - 19,000


• Battery Post - M8 Thread Post, Side Mount


• Standard Pulley - 49K6 (6-groove, 49mm)


• Pulley Mount - 17mm diameter shaft, 25mm long, threaded M17 x 1.5


• Pulley Hardware - M17 x 1.5 x 24mm nut, w/ 18mm ID x 29mm OD washer (Included)


• Diodes - 6 positive, 6 negative, 50A Rated, Avalanche


• Max Output (Cold, 9,000 RPM) - 254 Amps


• Sustained Cruising Output (Hot, 6,000 RPM) - 187 Amps


• Sustained Idle Output (Hot, 3,000 RPM) - 157 Amps

Mounting Application:

• Replaces Mando type alternators using Vortec/ GM pad mounting feet (Found on many Mercruiser and Volvo Penta 3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, 5.7GXiL Marine Engines.) (GM Blocks)

The ARCO Marine Zeus A225S Vortec Alternator is engineered to deliver the highest power output within its size class, making it an ideal choice for demanding marine, RV, military, and commercial applications. This alternator rapidly charges large battery banks and operates at cooler temperatures, which enhances its performance and longevity. Features such as heat shedding coatings, exterior-mounted rectifiers, and dual cooling fans ensure the alternator runs 8 to 20% cooler than conventional models, allowing for consistent high output even under strenuous conditions. The use of OEM components and advanced coatings like Cerakote or E-coat further contribute to durability and thermal management, enabling the alternator to sustain peak performance during extended use. For optimal results, especially when charging lithium batteries or seeking maximum power, pairing the unit with an ARCO Zeus Bluetooth regulator is recommended. Certified under SAE J1171 standards and proudly manufactured in the USA, this alternator combines advanced engineering with reliable performance. Its compact frame and lightweight design make installation straightforward, with features including a 14.1-volt regulation default, 16 rotor poles, and a 130mm stator offering ample power output. The unit's maximum output reaches 254 amps at cold start, with sustained outputs of 187 amps at cruising speed and 157 amps at idle, ensuring your electrical system remains consistently charged. The alternator replaces Mando type units using Vortec/ GM pad mounting feet, compatible with many Mercruiser and Volvo Penta marine engines, making it a versatile upgrade for various engine configurations. Durable diodes rated at 50A and robust mounting hardware ensure dependable operation in demanding environments. Whether used on boats, RVs, or military vehicles, the ARCO Marine Zeus A225S Vortec Alternator is built to provide reliable, high-performance power with advanced thermal management and robust construction.

Features:

• Engineered for high energy production with maximum power output in its size class

• Suitable for marine, RV, military, and commercial applications

• Rapidly charges large battery banks for extended operation

• Runs 8 to 20% cooler than traditional alternators due to heat shedding coatings, exterior rectifier, and dual cooling fans

• Uses OEM components and advanced Cerakote/E-coat for durability and thermal efficiency

• Optimized for performance at idle speeds, reducing the need for a generator

• Unleashes peak performance with ARCO Zeus Bluetooth regulator for maximum power and lithium battery charging

• SAE J1171 certified for safety and reliability

• Proudly made in the USA with high-quality materials and construction