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Arco Starting & Charging 4405 Zeus 24V 4kW Low Turn On Single Foot Marine Alternator

Manufacturer

Arco Starting & Charging

<h3>ARCO Starting &amp; Charging: The Marine Industry&apos;s Gold Standard</h3><p>When a boater turns the key and nothing happens miles from the dock, the name they wish they had trusted is <strong>ARCO Marine</strong>. For more than six decades, ARCO Starting &amp; Charging has been the benchmark for dependable marine engine electrical components — building and testing every unit at their facility in Pensacola, Florida to ensure each part meets or exceeds original equipment manufacturer (OEM) specifications before it ever reaches a customer.</p><p>Founded in 1960, ARCO set out with a straightforward mission: deliver peace of mind to boat owners and marine technicians through products they can rely on. That philosophy hasn&apos;t changed. Every component ARCO manufactures — from outboard <a href="/7236-arco-starting-charging-starter-motor-4152">starter motors</a> to high-output alternators — is rigorously load-tested beyond normal operating conditions. It&apos;s the kind of commitment that has made ARCO the trusted choice of professional marine service technicians and weekend boaters alike for generations.</p><h3>Purpose-Built for the Harshest Marine Environments</h3><p>Saltwater, humidity, and vibration are relentless adversaries for any electrical component. ARCO engineers their products specifically for these conditions. Their <a href="/7236-arco-starting-charging-tilttrim-motors-201071">tilt/trim motors</a> and <a href="/7236-arco-starting-charging-trim-and-tilt-units-201108">trim and tilt units</a> are designed to perform reliably through years of saltwater exposure, while their <a href="/7236-arco-starting-charging-alternators-200087">alternators</a> — including the advanced Zeus High Output Alternator line — are purpose-built to charge modern battery banks faster and handle the electrical demands of today&apos;s feature-rich vessels. ARCO makes OEM replacement parts compatible with leading engine manufacturers including Mercury, Yamaha, Volvo Penta, MerCruiser, Honda, Evinrude, Suzuki, and many others, making cross-referencing straightforward for technicians and DIYers alike.</p><h3>Innovation with the Zeus High Energy Platform</h3><p>ARCO&apos;s Zeus line represents the brand&apos;s push into next-generation marine charging technology. Zeus High Output Alternators and Bluetooth-enabled voltage regulators are engineered for multi-voltage compatibility and rated IP68 for protection against water intrusion — a critical specification in marine applications. The Zeus ecosystem is purpose-built to support lithium battery banks, high-draw accessories, and demanding live-aboard or commercial use cases where consistent power output is non-negotiable.</p><h3>OEM Quality, Factory Warranty, American-Made</h3><p>ARCO backs their entire rotating electric parts lineup — including their <a href="/7236-arco-starting-charging-starters-inboard-201008">inboard starters</a> — with the ARCO Assurance warranty program, offering coverage against defects in materials and workmanship. Manufacturing, quality testing, warehousing, and fulfillment all take place in the United States, giving buyers confidence in consistent quality control from start to finish. For anyone maintaining a vessel and unwilling to compromise on reliability, ARCO Starting &amp; Charging remains the definitive choice in marine engine electrical components.</p>

Part Number

4405
09/12/2036 8:09 AM
Sale Price

$1,236.09

1 left at this price

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Usually delivered within 2 days

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Product Details

The ARCO Zeus 24V 4kW LTO (Low Turn On) alternator is proudly made in the USA and SAE J1171 certified, representing the newest generation of high-performance 24-volt charging technology. This alternator continuously generates over 1.4kW (51 Amps) at just under 1,500 RPM and almost 2.4kW (87 Amps) at 2,000 alternator RPM, delivering exceptional power output even at lower engine speeds.

Advanced 24V Technology:

  • Utilizes a native 24V rotor and field current, resulting in cooler operation and extended alternator lifespan compared to competitors using 12V field current
  • Turns on at lower RPMs, runs cooler, and provides more power than older designs that are larger and heavier
  • Features E-Coat/Cerakote finish for peak performance, keeping the high amp alternator cooler for sustained amperage output
  • Features 1"-2" single foot mounting with isolated ground, replacing most domestic styles using single 1" or 2" mounting foot (e.g., Motorola, Prestolite)

Key Features:

  • Engineered for high energy production and suitable for marine, RV, military, and commercial applications
  • Rapidly charges large battery banks
  • Optimized for performance at cruising speeds and reduces the need for a generator by creating additional power with your engine
  • Compatible with ARCO Zeus Bluetooth Alternator Regulator for maximum performance or lithium battery charging

In real-world terms, a marine diesel engine idling at 750 RPM with a 2:1 pulley ratio generates over 1.5kW (55 Amps), and a Mercedes Sprinter at 750 RPM with a 3.21:1 ratio generates over 2.5kW (91 Amps). This exceptional low-RPM performance makes the Zeus 4405 ideal for applications requiring reliable charging without constant high engine speeds.

all good

I received the order in only two days.

Very helpful and easy

Order was accurate and shipping was on time.

Excellent price and very easy to order products.

Product I need

Thanks easy to order please make sure my parts are left and righ side

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