--- 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: "¥16450" currency: JPY in_stock: false url: https://www.desertcart.jp/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck store_origin: JP region: Japan --- # 390+ Amps Peak 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 (Natural) **Brand:** mechman **Price:** ¥16450 **Availability:** ❌ Out of Stock ## Summary > ⚡ Power Up Your GM Beast – Never Settle for Less! ## 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?** ¥16450 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 - • **Universal GM Fitment:** Seamlessly compatible with most GM trucks and SUVs from 1996 to 2020, with included harnesses for easy installation. - • **Powerhouse Performance:** Delivers a robust 390+ amps, tested up to 417 amps, ensuring your rig never runs low on juice. - • **Advanced Battery Support:** Optimized for modern AGM batteries and upgradeable to 17V for lithium setups with Mechman voltage booster harnesses. - • **Versatile Mounting Options:** One-wire turn-on and multiple bracket compatibility make custom setups and multi-alternator configurations a breeze. - • **Durability Meets Convenience:** Cast exterior finish for long-lasting durability, backed by a 2-year warranty and clear installation directions. ## Overview The Mechman 390-Amp High Output Alternator is engineered for GM trucks and SUVs (1996-2020), delivering reliable 14.5-15V output with peak amperage exceeding 390 amps. It supports AGM and lithium battery systems, includes all necessary harnesses for easy fitment, and offers versatile mounting options. Built tough with a cast finish and backed by a 2-year warranty, this alternator is the ultimate upgrade for professionals demanding consistent, high-performance power. ## 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 | |---------------|-------| | ASIN | B0D3SF6DFH | | Brand | Mechman | | Customer Reviews | 4.5 4.5 out of 5 stars (55) | | Date First Available | 6 July 2024 | | Exterior | cast | | Item Weight | 7.26 Kilograms | | Item model number | 14009390 | | Manufacturer | Mechman Alternators | | Manufacturer Part Number | 14009390 | | Model | 14009390 | ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck](https://www.desertcart.jp/products/721513697-mechman-390-amp-high-output-alternator-1996-2020-gm-truck) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-28*