ARCO Marine Zeus A275L J-180 4" Alternator w/Terminal Block

The ARCO Marine Zeus A275L is a 12V J-180 alternator with a 4 inch saddle-style mount and terminal block. It is externally regulated only and is intended for applications such as marine, RV, military, and commercial electrical systems where a large battery bank must be charged by the engine.

• Model: Zeus A275L
• Mounting application: Replaces most Volvo Penta alternators using a 4 inch J180 saddle-style mount
• Voltage: 12 V
• Output voltage: 14.1 V default
• Regulation: External only with terminal block and P-Type harness
• Field type: P
• Rotor poles: 16
• Stator size: 138 mm
• Frame size: Large
• Weight: 14.9 lb / 6.7 kg
• Finish: Black Cerakote or E-coating
• Cut-in speed: 1,061 alternator RPM
• Maximum alternator RPM: 19,000
• Battery post: M8 thread post, side mount
• Standard pulley: 49K6, 6-groove, 49 mm
• Pulley mount: 17 mm diameter shaft, 25 mm long, threaded M17 x 1.5
• Pulley hardware: M17 x 1.5 x 24 mm nut with 18 mm ID x 29 mm OD washer included
• Diodes: 6 positive and 6 negative, 50A rated, avalanche
• Max output: 311 amps cold at 9,000 RPM
• Sustained cruising output: 227 amps hot at 6,000 RPM
• Sustained idle output: 198 amps hot at 3,000 RPM
• Maximum continuous operating temperature: 110°C / 230°F
• Certification: SAE J1171 Certified
• Origin: Made in the U.S.A.