✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Authentic Arco Marine Zeus A275l Vortec Alternator W/terminal Block [4033] Your 30% Coupon Inside [2ICQScWx]

$74.99 $239.99 -69%

Zeus A275L Vortec Alternator with Terminal BlockThe 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.C

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Authentic Arco Marine Zeus A275l Vortec Alternator W/terminal Block [4033] Your 30% Coupon Inside [2ICQScWx]

Zeus A275L Vortec Alternator with 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 - 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)

What Our Customers Say

January 17, 2026

Absolutely no complaints!

An outstanding tool. Very useful.

- Mabon K..

January 17, 2026

Absolutely no complaints!

This is a handy and clever gadget.

- Beli P..

January 17, 2026

Absolutely no complaints!

This is a clever and impressive gadget.

- Goreu H..

Write a Review

You Might Also Like

Discover more great products from our collection.

Mustang Lil'Mate Infant Vest

Mustang Lil'Mate Infant Vest

(889)
$26.99 $86.99 -69%
BATEAU

BATEAU

(889)
$49.99 $159.99 -69%
Jasmine MINI Dress-Gold

Jasmine MINI Dress-Gold

(118)
$25.99 $83.99 -69%
Roxana Top

Roxana Top

(60)
$22.99 $73.99 -69%
One Hour Ceramic - Alabaster

One Hour Ceramic - Alabaster

(522)
$20.99 $67.99 -69%
Dodson & Horrell Nettle

Dodson & Horrell Nettle

(876)
$58.99 $188.99 -69%

Copyright 2026 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY