High Output Alternator for RAM 2500 (2019-2022) 6.4L

High-Amp Heavy-Duty Alternator for 2019-2022 RAM 2500 (DJ)

What it Does: The high output 350-amp alternator delivers continuous, stable electrical current to the 2019-2022 RAM 2500 to support high-draw aftermarket accessories and prevent idle voltage drops.

The Stock RAM 2500 Charging System Bottleneck

Factory charging systems on the heavy-duty DJ platform struggle when auxiliary loads exceed baseline fleet demands. Stock alternators typically generate between 180 and 220 amps, which quickly saturates when running high-draw gear such as recovery winches, auxiliary LED light arrays, snowplow hydraulics, and commercial inverter setups. Operating near maximum duty cycle generates intense thermal stress within the stator, causing thermal degradation of the internal bridge rectifier and early failure of the diode pack. Under heavy load at idle, the factory unit experiences severe voltage drop below 13.0 volts, leading to battery starvation, dimming lights, and erratic CAN-bus module behavior.

The Engineering Solution

This 350-amp direct-replacement alternator resolves charging shortfalls by integrating heavy-gauge copper stator windings and a precision-balanced rotor capable of high current delivery at low RPM. Built with premium sealed bearings to withstand serpentine belt lateral loads and vibration, this unit features a heavy-duty internal voltage regulator configured to maintain a steady 13.5V to 14.5V output window. Engineered with factory-matched mounting flanges, rotation orientation, and an OE connector interface, it directly replaces OEM parts 56029644AA and 56029644AB with zero harness modification.

What's Included

• 1 High Output 350-Amp Alternator

Technical Specifications

Compatibility

• 2019 RAM 2500 6.4L V8 Gas
• 2020 RAM 2500 6.4L V8 Gas
• 2021 RAM 2500 6.4L V8 Gas
• 2022 RAM 2500 6.4L V8 Gas

Frequently Asked Questions & Fitment Warnings

Does this fit the DJ 2500?

Yes, this is a direct fit for the 2019-2022 RAM 2500 equipped with the 6.4L HEMI (BGE) engine.

Do I need to upgrade my battery cables with this 350-amp alternator?

While this alternator utilizes the factory plug, completing a "Big 3" heavy-gauge charging wire and chassis ground upgrade is strongly recommended to handle full 350-amp throughput without resistance bottlenecks.

The RAM Heavy-Duty Standard

Constructed to meet rigorous fleet and towing demands, this charging upgrade supplies clean, reliable power under extreme engine bay heat and continuous heavy accessory loads.