The Zeus A275L J-180 3.15' Alternator with Regulator stands out as the highest power output alternator in its size and class. It's engineered for high energy production, making it suitable for marine, RV, military, and commercial applications. This alternator can rapidly charge large battery banks. It runs 8 - 20% cooler than other alternators, thanks to heat - shedding coatings, an exterior - located rectifier, dual cooling fans, and OEM components. Optimized for performance at idle speeds, it reduces the need for a generator by creating extra power with your engine. Our advanced E - Coat/Cerakote coating keeps the A275L cooler, providing more amperage over time. For maximum performance or lithium battery charging, use an ARCO Zeus Bluetooth alternator regulator. It's SAE J1171 Certified and proudly made in the U.S.A. Technical specs include 12v voltage, 16 rotor poles, and a large frame size. It replaces most small - case styles using a 3.15' J180 saddle - style mount. Note: This product may not be returned to the original point of purchase. Contact the manufacturer directly for issues.



Using the ARCO Marine Zeus A275L J - 180 3.15 Alternator with Regulator is straightforward. First, make sure it's correctly mounted using the 3.15' J180 saddle - style mount. Connect it to your engine and battery according to the standard electrical connections. For best results, use an ARCO Zeus Bluetooth alternator regulator, especially if you have lithium batteries. When operating, you'll notice it starts generating power even at idle speeds, reducing the need for a separate generator. Keep in mind that this product is not returnable to the place of purchase. If you face any issues, contact the manufacturer right away. Maintenance is key to its long - term performance. Check the cooling fans regularly to ensure they're working properly. The heat - shedding coatings and exterior rectifier help keep the alternator cool, but a clean environment around it will also improve its efficiency. Also, monitor the battery post and pulley hardware for any signs of wear or looseness. With proper use and care, this alternator will serve you well for a long time.