Arco Starting & Charging A275L-12-N62-EX-49K6 Zeus Marine Alternator 275A 12V

The Arco Zeus A275L N62 is a high-output marine alternator engineered to deliver exceptional power in a compact package. With a maximum cold output of 311 amps and sustained idle output of 198 amps, this alternator is designed for demanding marine, RV, military, and commercial applications requiring rapid charging of large battery banks.

Advanced Cooling Technology:

• Runs 8-20% cooler than conventional alternators through multi-layer cooling design
• Heat-shedding Cerakote or E-coat finish absorbs less heat for sustained high-amperage output
• Externally-mounted rectifier dissipates heat away from internal components
• Dual cooling fans maximize airflow
• Maximum continuous operating temperature rated to 230°F (110°C)

Performance Features:

• Optimized for high output at idle speeds—delivers 198 amps sustained at 3,000 RPM
• 16-pole rotor with 138mm stator for maximum efficiency
• 12 avalanche-rated diodes (6 positive, 6 negative) rated at 50A each
• Cut-in at just 1,061 alternator RPM for early charging
• SAE J1171 certified for quality and performance
• External regulation only—requires separate regulator (compatible with Arco Zeus Bluetooth regulators for lithium charging)

Construction & Specifications:

• Voltage: 12V, output 14.1V (default)
• Field type: P-Type (includes P-Type harness)
• Weight: 14.9 lbs (6.7 kg)
• Pulley: 49K6 (6-groove, 49mm diameter) on 17mm shaft
• Shaft: 17mm diameter, 25mm long, threaded M17 x 1.5
• Battery connection: M8 threaded post, side mount
• Maximum alternator RPM: 19,000
• Includes terminal block, mounting hardware, and washer

Applications:

Designed as a direct replacement for most Mercedes and BMW alternators, including Mercedes Sprinter models (1999-2006) and factory dual alternator systems (2007 and newer). Ideal for marine vessels, RVs, and commercial applications requiring reliable high-output charging to reduce or eliminate generator runtime.

Made in USA. Note: This product requires external regulator and may not be returned to point of purchase—contact manufacturer directly with questions or concerns.