--- product_id: 630440131 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 alternators" price: "¥28089" currency: JPY in_stock: false url: https://www.desertcart.jp/products/630440131-mechman-390-amp-high-output-alternator-1996-2020-gm-truck store_origin: JP region: Japan --- # 390+ Amps Peak Power 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 alternators **Price:** ¥28089 **Availability:** ❌ Out of Stock ## Summary > ⚡ Power Your GM Beast with Mechman – Amp Up or Miss Out! ## 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 alternators - **How much does it cost?** ¥28089 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/630440131-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 - • **All-Inclusive Kit:** Comes with all necessary wiring harnesses and adapters—just add your power cables and a shorter belt to get rolling. - • **Power That Outperforms:** Delivers a robust 390+ amps, tested up to 417 amps, ensuring your rig never runs low on juice. - • **Built to Last & Perform:** Durable cast finish with a 2-year warranty, engineered for reliable daily high-RPM operation. - • **Plug & Play Versatility:** Includes harnesses for both 1996-2004 and 2005-2020 GM models—easy install, zero guesswork. - • **Future-Proof Voltage Boost:** Compatible with Mechman voltage booster harnesses for up to 17V output, perfect for lithium battery upgrades. ## Overview The Mechman 390-Amp High Output Alternator is a desertcart exclusive designed for 1996-2020 GM Trucks and SUVs. It delivers a reliable 390+ amps (tested up to 417 amps) with voltage ranging from 14.5 to 15V, supporting modern AGM and lithium battery setups. Featuring a durable cast finish, included wiring harnesses for multiple model years, and compatibility with voltage booster harnesses for up to 17V, this alternator offers versatile, high-performance power with a 2-year warranty. Installation is simplified with all necessary adapters included, requiring only a half-inch shorter belt and power cables to complete your upgrade. ## 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! ## 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 | B0D3SF6DFH | | Best Sellers Rank | #848,348 in Automotive ( See Top 100 in Automotive ) #3,261 in Automotive Replacement Alternators | | Brand | Mechman Alternators | | Customer Reviews | 4.4 4.4 out of 5 stars (55) | | Date First Available | September 14, 2023 | | Exterior | cast | | Item Weight | 16 pounds | | 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/630440131-mechman-390-amp-high-output-alternator-1996-2020-gm-truck](https://www.desertcart.jp/products/630440131-mechman-390-amp-high-output-alternator-1996-2020-gm-truck) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-28*