ARCO Marine Zeus A225S 3.15 Alternator w/Isolated Ground (Common Rail) Terminal Block [4013]

Zeus A225S 3.15 Alternator: High - Power for Diverse Needs

This alternator offers the highest power output in its size and class. It's engineered to generate high energy and is perfect for marine, RV, military, and commercial applications.

Key Features:

• Quickly charges large battery banks.
• Operates at cooler temperatures (8 - 20% cooler than others), thanks to heat - shedding coatings, an exterior - located rectifier, and dual cooling fans.
• Made with OEM components and optimized for idle - speed performance.
• Creates extra power with your engine, reducing the need for a generator.
• E - Coat/Cerakote coating keeps it cooler for consistent amperage output.
• Pair it with the ARCO Zeus Bluetooth Alternator Regulator for top performance or lithium battery charging.
• SAE J1171 Certified. Available with internal or external voltage regulators. Proudly made in the U.S.A.

Technical Details:

• Voltage: 12v
• Field Type: P
• 16 Rotor Poles, 130mm Stator Size, Small Frame
• Weight: 12 lbs/5.4 kg
• Regulation: Internal/External (with adaptor for optional external use)
• Output Voltage: 14.1v (Default)
• Finish: (Black) Cerakote or E - coating
• Cut - In RPM: 1,061 Alternator RPM, Max 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
• Max Continuous Operating Temperature: 110°C / 230°F

Mounting Info:

• Use it on Yanmar Common Rail engines introduced after 2013 (JH - CR, 3JH40, 4JH45, 4JH57, 4JH80, 4JH110)

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Quick Guide (pdf)
Brochure (pdf)

Using the ARCO Marine Zeus A225S 3.15 Alternator is easy. First, make sure it's compatible with your Yanmar Common Rail engine introduced after 2013. Then, mount it properly according to the technical specifications. You can use it with the included pulley hardware. For best performance, you might want to pair it with the ARCO Zeus Bluetooth Alternator Regulator, especially if you're using lithium batteries. When it comes to maintenance, keep an eye on the operating temperature. Since it runs cooler than other alternators, that's a good sign, but don't let it overheat. Check the diodes and the battery post regularly for any signs of wear. And make sure the coatings stay intact as they help in heat shedding. Always follow the safety guidelines in the quick guide and brochure. If you notice any issues, like a drop in output or strange noises, stop using it and consult a professional.