High Output Alternator for RAM 4500 (2014-2018) 6.7L

High-Amp Heavy-Duty Alternator for 2014-2018 RAM 4500 (DP Chassis)

What it Does: The high output alternator replaces the underpowered factory unit on the 2014-2018 RAM 4500 to deliver a stable 350-amp electrical supply for heavy commercial accessory loads and steady battery charging at idle.

The Stock RAM 4500 Charging Deficits

Factory DP chassis work trucks struggle with electrical starvation when running hydraulic lift gates, auxiliary winches, service body lighting, or high-draw inverters. The OEM 220-amp alternator suffers from severe thermal decay under sustained duty cycles. At low diesel idle speeds, current output drops below demand, forcing secondary components to drain reserve battery capacity. Over time, heat soak degrades the factory diodes and internal voltage regulator, manifesting as dimming headlights, intermittent auxiliary cutouts, and premature diode pack failure under severe commercial towing demands.

The Engineering Solution

This 350-amp direct replacement is wound with heavy-gauge pure copper hairpin stator windings to minimize internal electrical resistance and combat thermal degradation. Built on a balanced high-speed rotor turning on precision-sealed dual-row bearings, it withstands the harsh vibrational harmonic profile generated by the Cummins 6.7L ISB inline-six diesel. A high-efficiency internal solid-state voltage regulator maintains a steady 13.5V to 14.5V charging floor across the entire rpm band, providing instant low-rpm idle amperage without taxing the factory harness or requiring bracket alteration.

What's Included

• 1 High Output 350-Amp Alternator

Technical Specifications

Compatibility

• 2014-2018 RAM 4500 Tradesman 6.7L Cummins Diesel Cab & Chassis
• 2014-2018 RAM 4500 SLT 6.7L Cummins Diesel Cab & Chassis
• 2014-2018 RAM 4500 Laramie 6.7L Cummins Diesel Cab & Chassis

Frequently Asked Questions & Fitment Warnings

Does this fit the DP 4500?

Yes, this is a direct bolt-in fit for the 2014-2018 RAM 4500 equipped with the Cummins 6.7L ISB turbo diesel engine using factory harness plugs.

Is an upgraded positive B+ charge wire required?

While the unit connects directly to factory wiring, upgrading the primary B+ battery cable and engine ground to a heavy-gauge Big 3 configuration is recommended to safely transfer full 350-amp flow.

The RAM Commercial Standard

Engineered for high-mileage fleet duty cycles, severe cold-weather glow-plug draws, and heavy commercial payload demands, this unit delivers uninterrupted 12-volt charging reliability under continuous towing conditions.