ARCO Marine Zeus A275L Vortec Alternator w/Terminal Block

The Zeus A275L Vortec Alternator with Terminal Block is engineered to deliver unparalleled power output, making it the top choice for marine enthusiasts seeking reliable and high-performance electrical solutions for their vessels. Whether you're outfitting a boat, RV, military, or commercial application, the A275L ensures your battery banks are charged swiftly and efficiently, even in demanding marine environments.

Key Features

• Exceptional Energy Production: Designed to generate high energy, ensuring your marine electrical systems run smoothly.
• Versatile Applications: Ideal for Marine, RV, Military, and Commercial use, providing flexibility across various platforms.
• Rapid Charging Capability: Quickly charges large battery banks, minimizing downtime and maximizing performance.
• Advanced Cooling Technology: Operates 8-20% cooler than standard alternators grâce to heat-shedding coatings, an external rectifier, dual cooling fans, and OEM-grade components.
• Optimized Idle Performance: Maintains high performance even at idle speeds, essential for marine applications where engines may not always be running at high RPMs.
• Generator Reduction: Provides additional power from your engine, reducing reliance on separate generators.
• Enhanced Durability: Features E-Coat/Cerakote coatings that absorb less heat, allowing for sustained high amperage without overheating.
• Smart Regulation: Compatible with ARCO Zeus Bluetooth alternator regulators or lithium battery chargers for optimal performance management.
• Certifications and Quality: SAE J1171 Certified and proudly made in the U.S.A., ensuring top-notch quality and reliability.

Technical Specifications

Specification	Details
Voltage	12V
Field Type	P
Rotor Poles	16
Stator Size	138mm
Frame Size	Large
Weight	14.9 lbs / 6.7 kg
Regulation	External Only (Includes terminal block and P-Type harness; requires external regulator such as ARCO Zeus Bluetooth)
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, with 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 Applications

The Zeus A275L Vortec Alternator is designed to seamlessly replace Mando-type alternators using Vortec/GM pad mounting feet. It is compatible with numerous marine engines, including:

• Mercruiser 3.0GLM
• Mercruiser 3.0GLP
• Mercruiser 4.3GXi
• Mercruiser 5.7GiL
• Mercruiser 5.7GXiL
• Volvo Penta 3.0GLM
• Volvo Penta 3.0GLP
• Volvo Penta 4.3GXi
• Volvo Penta 5.7GiL
• Volvo Penta 5.7GXiL
• GM Blocks

Upgrade your marine electrical system with the Zeus A275L Vortec Alternator and experience unmatched performance and reliability on the water.

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.