High Output Alternator for RAM 5500 (2016-2018) 6.7L

Heavy-Duty 350-Amp High Output Alternator for 2016-2018 RAM 5500 (DP)

What it Does: The 350-amp high output alternator replaces the factory charging unit on the 2016-2018 RAM 5500 to deliver reliable, high-amperage current under extended idling conditions and demanding commercial electrical loads.

The Stock RAM 5500 Charging System Limitation

Factory alternators installed on the commercial DP chassis cabs struggle to maintain system voltage when upfitted with auxiliary equipment such as hydraulic cranes, winches, snowplows, air compressors, or high-draw power inverters. Extended periods at engine idle starve OEM stators of rotational speed, causing critical voltage droop below 12.8V, thermal saturation of the factory diode trio, rapid battery drain, and starter motor strain.

The Engineering Solution

This heavy-duty unit is wound with dense, high-temperature copper stator wiring and an electronically balanced rotor to dramatically reduce internal inductive resistance and optimize electrical output at low engine speeds. Built with heavy-duty sealed roller bearings and a robust internal solid-state voltage regulator, it stabilizes output between 13.5V and 14.5V under full continuous amp loads. It directly interfaces with the factory harness, mounting bracketry, and serpentine belt routing without requiring bracket modifications.

What's Included

• 1 x 350-Amp Direct-Fit High Output Alternator (Part # 11443)

Technical Specifications

Compatibility

• 2016 RAM 5500 Cab & Chassis 6.7L Turbo Diesel
• 2017 RAM 5500 Cab & Chassis 6.7L Turbo Diesel
• 2018 RAM 5500 Cab & Chassis 6.7L Turbo Diesel

Frequently Asked Questions & Fitment Warnings

Does this fit the DP 5500?

Yes, this is a direct bolt-on fit for the 2016-2018 RAM 5500 equipped with the 6.7L Cummins ISB turbo diesel engine using standard mounting positions and harness pinouts.

Do I need to upgrade my battery cables for this alternator?

While this unit is plug-and-play with the stock connector, upgrading the primary battery charge and ground leads to 1/0 AWG cable is strongly advised to support the full 350-amp flow without thermal choke.

The RAM Commercial Standard

Built for rigorous commercial cycles, heavy hauling, and continuous fleet uptime, this electrical charging unit delivers dependable amperage to keep critical vocational equipment running without disruption.