---
product_id: 721513697
title: "Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Natural)"
brand: "mechman"
price: "€ 1394.88"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck
store_origin: HR
region: Croatia
---

# 390+ Amps High Output One-Wire Turn On + Multi-Bracket 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 (Natural)

**Brand:** mechman
**Price:** € 1394.88
**Availability:** ✅ In Stock

## Summary

> ⚡ Charge Ahead with Mechman: 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 (Natural) by mechman
- **How much does it cost?** € 1394.88 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/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck)

## Best For

- mechman enthusiasts

## Why This Product

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

## Key Features

- • **Custom-Ready Design:** Supports multiple alternator setups and brackets for tailored performance upgrades.
- • **Boost Voltage Up to 17V:** Compatible with Mechman voltage booster harnesses for next-level lithium battery power.
- • **Plug & Play Versatility:** Includes harnesses for 1996-2004 & 2005-2020 models—no guesswork, just seamless fitment.
- • **Durable Cast Finish & Warranty:** Built tough with a 2-year warranty—engineered to last and keep you moving.
- • **Power Your Ride with 390+ Amps:** Unleash reliable, high-output charging for all your heavy-duty GM trucks and SUVs.

## Overview

The Mechman 390-Amp High Output Alternator is engineered for GM trucks and SUVs from 1996 to 2020, delivering over 390 amps at 14.5-15V with compatibility for AGM and lithium batteries. It includes all necessary harnesses for easy installation across model years, supports multiple mounting options, and offers voltage boosting up to 17V. Finished with a durable cast exterior and backed by a 2-year warranty, this alternator ensures reliable, high-performance charging tailored for professional-grade vehicle upgrades.

## Description

This 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!

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mechman Alternators |
| Brand | Mechman |
| Model | 14009390 |
| Item Weight | 7.26 kg |
| Item model number | 14009390 |
| Exterior | cast |
| Manufacturer Part Number | 14009390 |
| Item Weight | 7.26 Kilograms |

## Images

![Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Natural) - Image 1](https://m.media-amazon.com/images/I/51-h8ZXYSdL.jpg)

## Frequently Bought Together

- Mechman 390-Amp High Output Alternator 1996-2020 GM Truck/SUV 4.3L 4.8L 5.3L 5.7L 6.0L (Natural)
- TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing
- Dayco 5060923 Poly-Rib Belts

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**Shop now:** [https://www.desertcart.hr/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck](https://www.desertcart.hr/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-23*