Description:

Upgrade your GM truck’s electrical system with the powerful combination of the Mechman 48-Volt Elite Alternator and their Dual Bracket Kit for 1999-2013 GM 4.8L/5.3L/6.0L engines. The 48-Volt Elite Alternator is engineered for continuous-duty high output, optimized for AGM battery banks and paired with a Wakespeed WS500 smart regulator for adaptive control and easy integration. The Dual Bracket kit complements this perfectly by providing a heavy-duty, zinc-coated bracket assembly with all necessary spacers and idlers, designed to perfectly align dual alternators on GM Vortec mounts to minimize belt wear and preserve access to power steering service points. Together, they deliver a turnkey solution for off-grid systems, auxiliary power setups or high-demand truck applications—offering seamless compatibility, robust construction and real-world reliability.

48-Volt Alternator | B820648V-LFP:

This alternator comes complete with a Wakespeed WS500 external smart regulator, providing adaptive charging control and simplified integration. Optimized for AGM battery banks, it is preprogrammed for simplified installation while still allowing customization. The GM Vortec-style frame provides easy fitment in multiple aftermarket bracket applications.

The 48V Elite Series alternator delivers dependable high-output power for auxiliary power systems and performance builds. Designed for continuous-duty operation, it provides reliable charging under demanding conditions. 

• Fits: GM Vortec & Duramax trucks as well as aftermarket dual bracket kits designed for GM Vortec alternators.
• Direct-Fit Design: GM Vortec mount ensures compatibility with many factory and aftermarket brackets.
• High-Output Capability: Built to deliver continuous amperage for 48V systems.
• Includes: Wakespeed WS500 Smart Regulator with 27’ harness and sensors.
• Battery Programming:  Comes pre-programmed with generic AGM battery charge profile.
• Complete Kit: Alternator, regulator, and accessories for plug-and-play installation.

Popular applications for 48 volt systems include:

• Charging off-grid 48 volt solar battery banks
• Heavy-duty trucks and equipment
• RV house bank charging
• DIY off-grid power generation
• Industrial equipment
• Mobile electric air conditioning and refrigeration

⚠️ Customer Responsibility: Customers must be running a battery bank of at least 100Ah. It is critical that the customer confirms the generic profile matches their battery requirements. Refer to the image below and your battery manufacturer’s specification sheet before installation. Mechman will not be responsible for issues caused by a mismatch. Adjustments can be made through the Wakespeed app if required.

Braket Kit:

After years of research and revisions, and thousands of miles of real-world testing, Mechman is proud to offer the most complete and functional dual alternator system available for 1999-2013 GM LS truck engines. This kit is designed with function and durability in mind with maximum belt rap, and perfect belt alignment for minimized belt slip and belt fatigue. We have also engineered the system such that you still have easy access to your power steering pump reservoir for fluid service. These kits come complete with alternator(s) and belt to take all the guess work out of the installation. Our highly detailed color instructions ensure a quick install, possible with standard hand tools. Mechman dual alternator kits include large case 6-phase elite series alternators, featuring massive twin rectifiers with 12 huge diodes for maximum durability in daily driven vehicles.

Note: This kit is intended for use with your factory alternator only in its original spot. The belt included has been appropriately sized for this.

Fitment Guide: