Arco Starting & Charging 4027 Zeus A275L High-Output Marine Alternator 12V 275A

Manufacturer

Arco Starting & Charging

Part Number

4027
03/12/2036 6:18 AM
Sale Price

$915.43

In Stock (10)

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Usually delivered within 2 days

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Product Details

The Arco Zeus A275L is a high-performance 275-amp alternator designed to deliver the highest power output in its size class. Engineered specifically for marine, RV, military, and commercial applications, this 12-volt alternator excels at rapidly charging large battery banks while maintaining the coolest operating temperatures in demanding environments.

Key Features:

  • Exceptional cooling performance: Runs 8-20% cooler than comparable alternators through advanced heat-shedding coatings, exterior-mounted rectifier, and dual cooling fans
  • Premium E-Coat/Cerakote finish absorbs less heat, enabling sustained high-amperage output
  • Optimized for peak performance at idle speeds with impressive 198-amp output at 3,000 RPM
  • High-capacity output: 311 amps maximum (cold, 9,000 RPM), 227 amps sustained cruising (hot, 6,000 RPM)
  • Reduces or eliminates the need for onboard generators by maximizing engine-driven power production
  • Compatible with ARCO Zeus Bluetooth alternator regulators for maximum performance and lithium battery charging
  • SAE J1171 certified for quality and reliability
  • Made in the USA with premium OEM components

Technical Specifications:

  • Voltage: 12V output (14.1V default regulation)
  • Output: 275A rated (311A max cold, 227A sustained cruising, 198A sustained idle)
  • Field Type: P-Type (external regulation only)
  • Stator: 138mm, 16-pole rotor design
  • Frame: Large single-foot mounting (1" or 2" foot)
  • Weight: 14.9 lbs (6.7 kg)
  • RPM Range: 1,061 cut-in to 19,000 maximum alternator RPM
  • Pulley: 49K6 (6-groove, 49mm) on 17mm diameter shaft
  • Shaft: 17mm diameter × 25mm long, threaded M17 × 1.5
  • Battery Post: M8 thread, side mount
  • Diodes: 12 total (6 positive, 6 negative), 50A rated avalanche type
  • Maximum Operating Temperature: 110°C (230°F) continuous
  • Finish: Black Cerakote or E-coating for superior heat dissipation

What's Included:

  • Zeus A275L alternator with terminal block
  • P-Type wiring harness
  • Pulley hardware: M17 × 1.5 × 24mm nut with 18mm ID × 29mm OD washer

Application: Replaces most domestic-style alternators using a single 1" or 2" mounting foot, including Motorola and Prestolite configurations. Note: Requires an external regulator such as the ARCO Zeus Bluetooth alternator regulator for operation.

very good !

Excellent prices and fabulous customer service!

They had a hard to find pump for a decent price. It arrived when they said it would. Haven't installed it yet so we'll see how it works

My product was shipped fast

Entering CVV was difficult

I received the bar and it looks to be very high-quality. However, this bar says it fits a 2003 through 2013 dodge ram 25 and 3500 series trucks. However, from 2003 to 2007-1/2. This truck comes with 1/2' (14mm) bolts. This bar only comes with the 14 mm and the upgraded 5/8' Hardware for the top joint. The lower joint connecting to the Axle only has the 5/8 hole and does not come with a reducing kit nor does it come with an upgraded 5/8' bolt, which would at least allow you to drill out the lower Mounting holes to mount this bar. As a result, you cannot use the original bolt and you have to go to Supply store to find the correct size bolt to allow you to mount this track bar. Highly inconvenient for the customer, especially when there is no mention of this in the description for the part. At the bare minimum, this track bar should've came with the second 5/8' bolt With the kit.

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