The Arco Zeus A275L J-180 High Output Alternator delivers the highest power output in its size class, engineered specifically for demanding marine, RV, military, and commercial applications. This 12-volt alternator produces up to 311 amps at maximum output, making it ideal for rapidly charging large battery banks without relying on a generator.
Advanced Cooling Technology:
- Runs 8-20% cooler than comparable alternators through heat-shedding Cerakote/E-coat finish
- Externally mounted rectifier dissipates heat away from internal components
- Dual cooling fans maintain optimal operating temperatures
- Maximum continuous operating temperature of 230°F (110°C)
Performance Specifications:
- Maximum output: 311 amps (cold, 9,000 RPM)
- Sustained cruising output: 227 amps (hot, 6,000 RPM)
- Sustained idle output: 198 amps (hot, 3,000 RPM)
- Optimized for high performance at idle speeds
- 138mm stator size with 16 rotor poles
- 12 avalanche-rated diodes (6 positive, 6 negative, 50A rated)
Technical Details:
- External regulation only (P-Type field, includes terminal block and P-Type harness)
- Compatible with Arco Zeus Bluetooth alternator regulator for maximum performance
- 3.15" J-180 saddle style mounting replaces Hitachi, Lucas, Mitsubishi small case styles
- 49K6 standard pulley (6-groove, 49mm) on 17mm diameter shaft
- M8 thread post battery connection, side mount
- Cut-in RPM: 1,061 alternator RPM / Maximum RPM: 19,000
- SAE J1171 Certified
What's Included: Alternator with terminal block, P-Type harness, pulley hardware (M17 x 1.5 x 24mm nut with washer)
Made in the USA with premium OEM components. The Cerakote/E-coat finish absorbs less heat for sustained high-amperage output, making this alternator the professional choice for vessels and vehicles requiring reliable, high-capacity charging systems.
Note: This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
