---
product_id: 623960505
title: "400 Amp Black Billet 05-13 GM Truck/SUV"
brand: "mechman alternators"
price: "€ 1606.65"
currency: EUR
in_stock: true
reviews_count: 3
category: "Mechman Alternators"
url: https://www.desertcart.hr/products/623960505-400-amp-black-billet-05-13-gm-truck-suv
store_origin: HR
region: Croatia
---

# 400 Amps peak output Direct plug-in replacement Anodized black billet finish 400 Amp Black Billet 05-13 GM Truck/SUV

**Brand:** mechman alternators
**Price:** € 1606.65
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your GM truck’s power game with Mechman’s elite 400 Amp alternator!

## Quick Answers

- **What is this?** 400 Amp Black Billet 05-13 GM Truck/SUV by mechman alternators
- **How much does it cost?** € 1606.65 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/623960505-400-amp-black-billet-05-13-gm-truck-suv)

## 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

- • **Plug & Play Upgrade:** Seamlessly fits most 2005-2013 GM Trucks/SUVs with standard oval 4-pin plug—no hassle installation.
- • **Powerhouse Performance:** Delivers over 400 amps at cruising speeds for unmatched electrical reliability.
- • **Sleek & Durable Design:** Anodized black billet exterior combines rugged durability with modern style.
- • **Optimized Pulley System:** Smaller 1.75-inch pulley requires a shorter belt for perfect tension and efficient power transfer.
- • **Engineered for Daily Drive:** 6-phase tech with dual rectifiers ensures steady power without risking warranty—no racing overspin.

## Overview

The Mechman Alternators 400 Amp Black Billet is a high-output, reliable alternator designed for 2005-2013 GM Trucks and SUVs. Featuring advanced 6-phase technology and dual rectifiers, it delivers over 200 amps at idle and exceeds 400 amps at cruising speeds. Its anodized black billet finish offers durability and style, while the smaller pulley requires a shorter belt for optimal performance. Ideal for daily driving with a direct plug-in fit, this alternator bypasses computer voltage control and comes with a 2-year manufacturer warranty.

## Description

The Elite Series 400 Amp Alternator is engineered to deliver exceptional amperage output and reliability. Featuring 6-phase technology and dual rectifier assemblies with 12 robust diodes, this alternator is designed for daily use and high performance. It produces over 200 amps at engine idle and exceeds 400 amps at cruising speeds (HOT RATED). This model includes a smaller diameter pulley, which typically requires a shorter belt (1/2 inch to 1 inch shorter than the original) for optimal belt tension. Installation Notes: For vehicles originally equipped with the CS144 heavy-duty charging system, an additional rectangle-to-oval adapter harness may be required (less common scenario). This alternator is a direct plug-in replacement for trucks equipped with the standard oval-shaped 4-pin plug, as depicted.

Review: Worth it - Can't wait to get another. I use it for a stand alone car audio setup and it definitely holds up to my expectations
Review: Mechman mistake - Made this purchase only to find that the product is 160 dollars cheaper buying direct. In buying the product here it failed in less than a year, lucky for me desertcart keeps track of what you bought when you bought it so I was able to have the product warrantied. Do NOT buy the desertcart warranty for this product Mechman will grant you a 2 year warranty out the gate without extra cost to you and save the box in the event you have to return it.

## Features

- Installation Notes: This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension. Not recommended for sustained use above 5,000 RPM engine speed.
- Not for racing use, overspinning will void warranty
- Do not use consistently over 5500rpms
- Computer controlled voltage bypassed
- Fits most GM/Truck/SUV's from 2005-2013

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D2DS871D |
| Best Sellers Rank | #407,022 in Automotive ( See Top 100 in Automotive ) #1,364 in Automotive Replacement Alternators |
| Brand | Mechman Alternators |
| Customer Reviews | 4.1 4.1 out of 5 stars (5) |
| Date First Available | September 8, 2023 |
| Exterior | Anodized Black |
| Item Weight | 16 pounds |
| Item model number | B8302400B |
| Manufacturer | Mechman |
| Manufacturer Part Number | B8302400B |
| Model | 400 amp alternator |
| Package Dimensions | 10 x 10 x 10 inches |

## Images

![400 Amp Black Billet 05-13 GM Truck/SUV - Image 1](https://m.media-amazon.com/images/I/71jP1PfUgmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth it
*by E***D on December 24, 2025*

Can't wait to get another. I use it for a stand alone car audio setup and it definitely holds up to my expectations

### ⭐ Mechman mistake
*by P***R on April 1, 2025*

Made this purchase only to find that the product is 160 dollars cheaper buying direct. In buying the product here it failed in less than a year, lucky for me Amazon keeps track of what you bought when you bought it so I was able to have the product warrantied. Do NOT buy the Amazon warranty for this product Mechman will grant you a 2 year warranty out the gate without extra cost to you and save the box in the event you have to return it.

### ⭐⭐⭐⭐⭐ Product as described
*by A***R on June 22, 2025*

Very pleased with the performance

## Frequently Bought Together

- Mechman Alternators 400 Amp Black Billet 05-13 GM Truck/SUV
- 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
- Sky High Oversized 1/0 Gauge AWG Big 3 Upgrade RED/Black Electrical Wiring Kit

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**Shop now:** [https://www.desertcart.hr/products/623960505-400-amp-black-billet-05-13-gm-truck-suv](https://www.desertcart.hr/products/623960505-400-amp-black-billet-05-13-gm-truck-suv)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-23*