---
product_id: 153910499
title: "LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A"
brand: "lactrical"
price: "R7778"
currency: ZAR
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.za/products/153910499-lactrical-high-output-120-amp-alternator-for-mercruiser-marine-ski
store_origin: ZA
region: South Africa
---

# 120A Power Marine Ready Premium Quality LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A

**Brand:** lactrical
**Price:** R7778
**Availability:** ✅ In Stock

## Summary

> ⚓ Power Up Your Adventure with Confidence!

## Quick Answers

- **What is this?** LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A by lactrical
- **How much does it cost?** R7778 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/153910499-lactrical-high-output-120-amp-alternator-for-mercruiser-marine-ski)

## Best For

- lactrical enthusiasts

## Why This Product

- Trusted lactrical brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium aftermarket quality ensures durability.
- • **Marine Mastery:** Designed specifically for Mercruiser engines.
- • **Unleash the Power:** High Output 120 Amp for peak performance.
- • **Lightweight Champion:** Weighs only 15 lbs for easy installation.
- • **Seamless Compatibility:** Replaces multiple OEM part numbers effortlessly.

## Overview

The High Output 120 Amp Alternator by LActrical is a premium aftermarket replacement designed for Mercruiser Marine Ski Engines. Weighing just 15 pounds, this alternator delivers a robust 120 amps at 14 volts, ensuring your marine adventures are powered without interruption. With seamless compatibility across various OEM part numbers, it’s the perfect upgrade for enthusiasts seeking reliability and performance on the water.

## Description

LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A

## Features

- Premium Quality Replacament High Output Alternator
- New Aftermarket Part (Not Rebuilt/Refurbished/Repurposed)
- 1 Groove High Output 120Amp
- Replaces: 10-358 10-374 8EM2007K 8EM2007KA 8EM2010K 8EM2010KA 3854809 3860769 RA097006 110-358 110-374 110-517 20130179 20130204 3850927-9 3853853-4 3854809-5
- 10-358 10-374 8EM2007K 8EM2007KA 8EM2010K 8EM2010KA 3854809 3860769 RA097006 110-358 110-374 110-517 20130179 20130204 3850927-9 3853853-4 3854809-5

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | LActrical |
| Brand | LActrical |
| Model | 12174 HO |
| Item Weight | 15 pounds |
| Item model number | LA12174HO80000 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | LA12174HO120A |
| OEM Part Number | A000B0331 AC155603 AC155604 AC155614 AR150 AR150AA AR150AR AR150BA M56750 1210-000 12449 19685 817119 817119-1 817119-2 817119A1 817119A4 92497 92497A3 98555 |
| Special Features | High Output |
| Amperage | 120 Amps |
| Voltage | 14 Volts |

## Images

![LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A - Image 1](https://m.media-amazon.com/images/I/71CvY9QydGL.jpg)
![LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A - Image 2](https://m.media-amazon.com/images/I/71Bg2DA74rL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Perfectly As An Upgrade - Update After Installation
*by D***N on July 11, 2021*

I bought this 120 amp alternator as an upgrade to the alternator on a 1996 Baja Islander 180. The engine is a 4.3 liter Mercruiser v6. We had added a stereo system with an amplifier and we needed more capacity from the original alternator. The alternator itself appears to be a high quality unit and it fit perfectly with no modifications at all. Even the wiring was identical to the original 55 amp alternator. I did add a #4 gauge wire from the alternator to the battery in addition to the existing alternator wire. When running the engine, there was 14.22 volts at the battery. All in all, this is a terrific upgrade for the charging system on the boat. This is an Update: I took the boat out a couple of days ago and the alternator worked perfectly. The alternator was charging at 14.22 volts. Very pleased so far.

### ⭐⭐⭐⭐ It worked and was delivered in a timely manner.
*by D***K on July 8, 2024*

The only thing was the colored wires were connected to the matching wires on the boat. But it didn't work. We took to our boat mechanic and they changed up the wires. It now runs

### ⭐ Not 120 amp
*by K***K on August 31, 2021*

Purchased this alternator, used approximately 60hrs and it failed. Was out of the warranty period so I sent it to be repaired and was informed by the repair shop that it is only a 65 amp alternator. Would not recommend.

## Frequently Bought Together

- LActrical High Output 120 Amp Alternator For Mercruiser Marine Ski Eng. 5.7l Competition 350 Mag Ski GM 5.7L 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 120A
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-04*