ARCO Marine Zeus A275L J-180 4" Alternator with Regulator - Part #4024

Zeus A275L J-180 4" Alternator with RegulatorThe highest power output alternator in its size/class. Features: Engineered for High Energy Production. Suitable for Marine, RV, Military, and Commercial applications. Rapidly charges large battery banks. Coolest operating temperatures for increased performance.  It runs 8 - 20% cooler than incumbent alternators due to heat-shedding coatings, a refrigerator on the housing exterior, dual cooling fans, and OEM components. It is optimized for performance at idle speeds. Reduces the need for a generator by creating additional power with your engine. Unleash peak performance with E-Coat/Cerakote. Our advanced coating absorbs less heat, keeping the A275L cooler. This translates to more amperage for sustained periods. Use an ARCO Zeus Bluetooth alternator regulator or lithium battery charging for maximum performance. SAE J1171 Certified. Made in the U.S.A. Technical Specifications: Voltage - 12v Field Type - P Rotor Poles - 16 Stator Size - 138mm Frame Size - Large Weight - 14.9 lbs/6.7 kg Regulation - Internal/External (Internally regulated with adaptor for optional external regulation.)  Output Voltage - 14.1v (Default) Finish - (Black) Cerakote or E-coating Cut-In RPM - 1,061 Alternator RPM Maximum 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) - 311 Amps Sustained Cruising Output (Hot, 6,000 RPM) - 227 Amps Sustained Idle Output (Hot, 3,000 RPM) - 198 Amps Max Continuous Operating Temperature - 110°C / 230°F Mounting Application:Replaces most Volvo Penta alternators using a 4” J180 saddle-style mount Introducing the ARCO Marine Zeus A275L J-180 4" Alternator with Regulator, engineered for exceptional power output and efficiency. This alternator is the highest power output solution in its size class, making it an ideal choice for marine, RV, military, and commercial applications. Its innovative design allows for rapid charging of large battery banks while maintaining cooler operating temperatures, translating to improved performance and longevity. The Zeus A275L is optimized for peak performance even at idle speeds, reducing the need for an auxiliary generator by harnessing additional power from your engine. This alternator features advanced heat-shedding coatings and dual cooling fans, ensuring it runs 8-20% cooler than traditional models. Additionally, you can enhance its capabilities further by pairing it with an ARCO Zeus Bluetooth alternator regulator or utilizing lithium battery charging methods. With a focus on quality and performance, the ARCO Marine Zeus A275L is SAE J1171 certified and proudly made in the U.S.A. Experience a new level of reliability and efficiency with the Zeus A275L alternator, the perfect addition to your power generation setup. Features: * Engineered for high energy production, suitable for marine, RV, military, and commercial applications. * Rapidly charges large battery banks while maintaining cooler operating temperatures. * Runs 8-20% cooler than conventional alternators due to heat-shedding coatings and dual cooling fans. * Optimized for performance at idle speeds, reducing the need for a generator. * Features E-Coat/Cerakote for improved heat absorption and sustained amperage. * SAE J1171 Certified for reliability and safety. * Mounts easily to replace most Volvo Penta alternators using a 4" J180 saddle-style mount.