---
product_id: 679866704
title: "Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black)"
brand: "mechman alternators"
price: "€ 1037.46"
currency: EUR
in_stock: true
reviews_count: 4
category: "Mechman Alternators"
url: https://www.desertcart.hr/products/679866704-mechman-390-amp-high-output-alternator-1996-2020-gm-truck
store_origin: HR
region: Croatia
---

# 390+ Amps High Output Supports AGM & Lithium Batteries Fits 1996-2020 GM Trucks/SUVs Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black)

**Brand:** mechman alternators
**Price:** € 1037.46
**Availability:** ✅ In Stock

## Summary

> ⚡ Charge Ahead: Power Meets Precision for Your GM Beast

## Quick Answers

- **What is this?** Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) by mechman alternators
- **How much does it cost?** € 1037.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/679866704-mechman-390-amp-high-output-alternator-1996-2020-gm-truck)

## Best For

- mechman alternators enthusiasts

## Why This Product

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

## Key Features

- • **Future-Proof Voltage Boost:** Compatible with Mechman voltage booster harnesses for up to 17V—perfect for lithium battery setups.
- • **Versatile Mounting Options:** One-wire turn-on and multiple bracket compatibility for custom and multi-alternator builds.
- • **Plug & Play for GM Classics:** Includes harnesses for 1996-2004 & 2005-2020 models—easy install, zero guesswork.
- • **Durability Meets Convenience:** Cast finish for rugged longevity plus a 2-year warranty—drive with confidence.
- • **Power Your Ride with 390+ Amps:** Unleash superior electrical performance for all your tech and audio upgrades.

## Overview

The Mechman 390-Amp High Output Alternator is a desertcart exclusive designed for 1996-2020 GM Trucks and SUVs. Delivering over 390 amps at 14.5-15V, it supports modern AGM and lithium battery systems with optional voltage boosting up to 17V. It includes all necessary harnesses for seamless installation across two major GM model year ranges, features versatile mounting options, and comes with a durable cast finish and 2-year warranty. Ideal for professionals upgrading their vehicle’s electrical system to handle high-demand accessories and audio setups.

## Description

This desertcart Exclusive high output alternator by Mechman is designed to meet the needs of GM trucks and SUVs from 1996 to 2020. With a voltage of 14.5 to 15V and an amperage of 380+, it provides reliable and efficient performance for today's modern AGM style batterys. The alternator comes with a pulley, one wire capable, and clockwise rotation. This alternator is also capable of being run on multiple alternator setups, brackets and custom-made mounts making it extremely versatile. If you are needing higher voltage output for lithium-based batteries, this alternator uses a GM 4pin regulator that will accept Mechman voltage booster harnesses for easy, reliable and cheap voltages up to 17 volts! It also has a 2-year manufacturer warranty and is a performance part suitable for universal fitment. The casting finish adds to the durability of the alternator. We include all necessary wiring harnesses and adapters to fit the year spans from 1996 to 2020. H104 harness for 1996 to 2004 P101 and P103 combo for 2005-2020 The only item left to purchase will be your 0-gauge power and ground wires to go directly to your battery and the half inch shorter belt. Please see gallery picture for belt part number reference. WE MAKE IT EASY!

Review: High output alternator is a must!!! - A must upgrade for those bass heads easy to install comes with harness bypass pin you will need to run a smaller belt
Review: Doesn’t fit - Doesn’t fit 2010 Silverado with a 4.8l ls! Don’t waist your time!

## Features

- Fits most 1996 to 2020 GM Trucks and SUV's
- Comes with harnesses for both 1996-2004 and also the 2005-2020 models
- Not for racing use and requires a half inch shorter belt for operation
- Includes directions
- One wire turn on and multiple bracket capable
- desertcart Exclusive

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DNRG6TM4 |
| Best Sellers Rank | #770,632 in Automotive ( See Top 100 in Automotive ) #3,213 in Automotive Replacement Alternators |
| Brand | Mechman Alternators |
| Customer Reviews | 3.6 3.6 out of 5 stars (9) |
| Date First Available | November 21, 2024 |
| Exterior | Natural |
| Item model number | AMP-14009390B |
| Manufacturer | Mechman Alternators |
| Manufacturer Part Number | AMP-14009390B |
| Model | AMP-14009390B |

## Images

![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) - Image 1](https://m.media-amazon.com/images/I/31MUhjwpFsL.jpg)
![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) - Image 2](https://m.media-amazon.com/images/I/31TBhjsXm6L.jpg)
![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) - Image 3](https://m.media-amazon.com/images/I/41RE4Fogd0L.jpg)
![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) - Image 4](https://m.media-amazon.com/images/I/41RLNOM3fmL.jpg)
![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black) - Image 5](https://m.media-amazon.com/images/I/51Wg1Dz45JL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ High output alternator is a must!!!
*by A***R on December 2, 2025*

A must upgrade for those bass heads easy to install comes with harness bypass pin you will need to run a smaller belt

### ⭐ Doesn’t fit
*by E***K on November 20, 2025*

Doesn’t fit 2010 Silverado with a 4.8l ls! Don’t waist your time!

### ⭐⭐⭐⭐⭐ Review
*by J***L on September 23, 2025*

Exelente ,sigan fabricando mas igual de buenos

## Frequently Bought Together

- Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Black)
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-07*