ARCO Marine Zeus A275L N62 Alternator with Clutch Pulley and Terminal Block

Zeus A275L N62 Alternator with Clutch Pulley Terminal Block

The 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.
• Runs 8 - 20% cooler than incumbent alternators due to: Heat shedding coatings, Rectifier located on 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 - External Only (These units will come with a terminal block and a P-Type harness. They will only work with an external regulator, such as an ARCO Zeus Bluetooth alternator regulator.)
• 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 - 110C / 230F

Mounting Application:

• Mercedes Sprinter 1999-2006 alternators, Mercedes Sprinter Factory dual alternator 2007-Up Replacement. Replaces Roadtrek Mercedes Dual alternator

The ARCO Marine Zeus A275L N62 Alternator is designed for high energy production in demanding marine, RV, military, and commercial applications. This alternator delivers the highest power output within its size class, making it ideal for rapidly charging large battery banks and ensuring your system maintains peak performance. Its advanced engineering includes heat shedding coatings, exterior-mounted rectifiers, dual cooling fans, and OEM components that contribute to operating temperatures running 8 to 20% cooler than traditional alternators, which enhances durability and efficiency.
Built for performance at idle speeds, the Zeus A275L can generate up to 311 amps at cold start and sustain impressive output levels during operation, reducing reliance on generators and providing additional power directly from your engine. The use of Cerakote or E-coating on the housing absorbs less heat, keeping the alternator cooler and enabling more consistent amperage during extended use. For maximum performance, it is compatible with ARCO Zeus Bluetooth alternator regulators and lithium battery charging systems, offering flexibility for your power management needs.
The alternator features a 12-volt system with a P-type field, 16 rotor poles, and a 138mm stator, housed in a large frame weighing approximately 14.9 pounds. It requires an external regulator and includes a terminal block and P-type harness for easy installation. The default output voltage is 14.1 volts, with a cut-in RPM of 1,061 and a maximum RPM of 19,000, ensuring reliable operation across a range of engine speeds. The unit is equipped with a M8 side mount battery post, a standard 6-groove pulley, and threaded shaft for secure attachment.
This alternator is suitable as a replacement for Mercedes Sprinter models from 1999-2006 and factory dual alternator setups in 2007 and newer models, including Roadtrek Mercedes dual alternators. Its robust diode configuration rated at 50A with avalanche suppression guarantees durability and safety during operation. Designed and manufactured in the USA, the ARCO Marine Zeus A275L N62 Alternator offers a reliable, high-performance power solution for demanding applications requiring consistent, high amperage output and efficient cooling.

Features:

• High energy production engineered for demanding applications

• Suitable for marine, RV, military, and commercial use

• Rapidly charges large battery banks

• Operates 8-20% cooler due to advanced heat shedding coatings and cooling design

• Optimized for performance at idle speeds

• Reduces reliance on generators by generating additional power from engine

• Advanced coating (Cerakote/E-coating) absorbs less heat for improved cooling and sustained amperage

• Compatible with ARCO Zeus Bluetooth alternator regulators and lithium charging systems

• SAE J1171 certified for safety and quality

• Made in the USA for quality assurance