--- product_id: 603835382 title: "Mechman Alternators 400 Amp Alternator For 14-18 GM Truck" brand: "mechman alternators" price: "$188.35" currency: USD in_stock: false url: https://www.desertcart.us/products/603835382-mechman-alternators-400-amp-alternator-for-14-18-gm-truck store_origin: US region: United States of America --- # 400+ Amps peak output Fits 2005-2019 GM trucks/SUVs 200+ Amps at idle (800 RPM) Mechman Alternators 400 Amp Alternator For 14-18 GM Truck **Brand:** mechman alternators **Price:** $188.35 **Availability:** ❌ Out of Stock ## Summary > ⚡ Charge Ahead with Confidence — Power Meets Precision! ## Quick Answers - **What is this?** Mechman Alternators 400 Amp Alternator For 14-18 GM Truck by mechman alternators - **How much does it cost?** $188.35 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/603835382-mechman-alternators-400-amp-alternator-for-14-18-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 - • **Idle Power Boost:** Maintains 200+ amps output even at engine idle speeds (800 RPM), keeping your battery charged and accessories running. - • **Plug & Play Precision:** Designed for seamless fit on most 2005-2019 GM full-size trucks and SUVs—no guesswork needed. - • **Power That Won't Quit:** Delivers a massive 400+ amps at 1800 RPM for reliable, high-demand performance. - • **Simplified Installation:** Includes 1-wire P101 harness and P103 module for easy wiring—no check engine lights or voltage fluctuations. - • **Advanced Durability Tech:** Built with 6-phase technology, twin rectifiers, and 12 diodes for unmatched longevity and stable voltage. ## Overview The Mechman 400 Amp Alternator is engineered for 2005-2019 GM full-size trucks and SUVs, delivering over 400 amps at 1800 RPM and 200+ amps at idle. Featuring advanced 6-phase technology and robust twin rectifiers, it ensures durable, stable power without voltage fluctuations. Designed for easy installation with included harnesses, this alternator bypasses the factory RVC system for consistent, reliable charging—perfect for professionals who demand peak performance without compromise. ## Description 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. ((Check instructions section for finding belt sizes and wiring)). If you DO NOT use the correct shorter belt, this will result in very low to no output and create extra work load for the alternator. The Elite series offers the highest possible amperage and durability available in a large case alternator. 6 phase technology combined with massive twin rectifier assemblies and 12 diodes makes these alternators totally durable for daily use, while still maintaining 200+ amps at engine idle speeds. These alternators use the more robust 4 pin style regulator than the OE 2 pin ECU controlled alternator. There is no extreme voltage fluctuation as this will bypass the RVC charging system on all 2005> GM truck applications. Simply install the included 1 wire P101 harness to a tested 12v switched source and plug in the included P103 module into the vehicles 2 pin original alternator wiring harness. No check battery light, no computer controlled voltage swings. The voltage you want, when you want it! ## Features - Fits most 2005-2019 GM Full size truck/SUV - MUST USE 1/2" SHORTER SERPENTINE BELT - NOT FOR HIGH RPM RACING USES!!!!! - 200+ amps at 800rpm's, 400+ at 1800rpms ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CRZTJZBN | | Best Sellers Rank | #1,250,411 in Automotive ( See Top 100 in Automotive ) #4,913 in Automotive Replacement Alternators | | Brand | Mechman Alternators | | Customer Reviews | 5.0 5.0 out of 5 stars (4) | | Date First Available | January 10, 2024 | | Exterior | cast | | Item Weight | 16 pounds | | Item model number | 14019400 | | Manufacturer | Mechman Alternators | | Manufacturer Part Number | 14019400 | | Model | Mechman Alternators 400 Amp Alternator For 14-18 GM Truck | ## Images ![Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - Image 1](https://m.media-amazon.com/images/I/71V+PXU1hhL.jpg) ![Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - Image 2](https://m.media-amazon.com/images/I/31f7tecrHCL.jpg) ![Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - Image 3](https://m.media-amazon.com/images/I/41gAHfbysQL.jpg) ![Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - Image 4](https://m.media-amazon.com/images/I/31n+6iUWRyL.jpg) ![Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - Image 5](https://m.media-amazon.com/images/I/31zSCHsDTyL.jpg) ## Frequently Bought Together - Mechman Alternators 400 Amp Alternator For 14-18 GM Truck - ACDelco Gold K060930HD Heavy Duty V-Ribbed Serpentine Belt --- ## 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.us/products/603835382-mechman-alternators-400-amp-alternator-for-14-18-gm-truck](https://www.desertcart.us/products/603835382-mechman-alternators-400-amp-alternator-for-14-18-gm-truck) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-05*