SKU: 55927796825

ARCO Marine Zeus A275L Vortec Alternator w/Regulator [4034]

Sale price$493.52 Regular price$548.35
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

ARCO Marine Zeus A275L Vortec Alternator w/Regulator [4034]Zeus A275L Vortec Alternator with Regulator 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

Zeus A275L Vortec Alternator with Regulator

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 - 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 Mando-type alternators using Vortec/GM pad mounting feet. (Found on many Mercruiser and Volvo Penta 3.0GLM, 3.0GLP, 4.3GXi, 5.7GiL, 5.7GXiL Marine Engines.) (GM Blocks)

Quick Guide (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 55927796825

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4.1 ★★★★★
Based on 9 reviews
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A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 4
Fun while they lasted
Color: Green
I ordered two. One for each pup. Both my puppies loved this toy. The first one lasted less than a day with my pup who loves to do the death shake on everything. The second lasted two days with the other as she chews in the same spot. They loved the crinkle noise. However, I'm taking one star away due to not lasting long. Everything else was fine and they enjoyed them while they lasted. Note that most toys do not last long with my pups.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
A
Verified Purchase
Alissa
Draper, US
★★★★★ 5
Puppy Loves this toy
Color: Tie Dye Blue
My puppy is a 7wk old Great Pyrenees & Lab mix. He loves this toy! Fun for tug of war and for cuddles. Definitely worth the money. It is durable enough for razor puppy teeth.
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Reviewed in the United States on June 9, 2026
M
Verified Purchase
Marybeth Kenny
Boise, US
★★★★★ 5
Looks Even Better in Person!
Color: Rose Red
Does exactly what it says. Simple, effective, and high quality.
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Reviewed in the United States on May 19, 2026
G
Verified Purchase
G
Boise, US
★★★★★ 5
The pooch is on Cloud No 9
Color: Blue
Lucky loves everything about this (blue) octopus. It has squeakers in all the right places and the crinkle sound adds to his fun. He’s almost 70lbs and extremely strong, and can be an aggressive player and chewer. So far, it has held up extremely well for the tug-of-war games and crazy shaking play. It’s well worth the money. I also want to mention that this toy is true to size. I have too often ordered dog toys that turned out to be much smaller than advertised.
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Reviewed in the United States on January 15, 2026
N
Verified Purchase
Nicole
Cuba, US
★★★★★ 5
Cute, soft, quiet and durable
This stuffy is HUGE! I was expecting it to be half this size. We're happy to have a stuffy that does *NOT* have a squeaker. We're finding it to be very sturdy. My 4 month old puppy is a terrier mix and she loves to attack and shake stuffies and you can't tell this thing has been abused at all. Looks the same a 2 weeks later as it did new. It's one of her favorites and we love it because its quiet. Should last a long time. This is an update 4 months after purchase. The red squirrel continues to be a favorite with my puppy. With other plush toys, she tears them apart in 10 minutes. This one, somehow, has lasted months. Over time, she has pulled off the tail, the ears, and two of the legs, but the body is still intact. Amazing!
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Reviewed in the United States on November 17, 2025

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