High Output Alternator for RAM 4500 (2017-2019) 6.4L

High-Amp 350A Charging Alternator for 2017-2019 RAM 4500 (DP)

What it Does: The 350-amp high output alternator replaces the low-output factory charging unit on the 2017-2019 RAM 4500 to deliver sustained amperage at idle and eliminate voltage drops caused by high-draw commercial accessories.

The Stock RAM 4500 Electrical Deficiencies

Factory commercial charging systems on the DP platform struggle under real-world fleet demands. OEM Denso alternators are engineered strictly for baseline vehicle electronics and minimal auxiliary loads. When operators integrate high-amperage hydraulic power packs, commercial winches, emergency strobes, utility cranes, or inverter banks, the factory stator overheats. The resulting thermal load breaks down internal diode rectifiers, leading to severe voltage ripple, depleted auxiliary batteries, erratic ECM communication, and premature alternator stator burnout during extended low-RPM idling cycles.

The Engineering Solution

Engineered for sustained duty cycles, this 350-amp direct-replacement alternator features heavy-gauge, high-temperature copper stator windings packed into precision laminations for optimal magnetic flux density. A dynamic, precision-balanced rotor rides on heavy-duty, double-sealed ball bearings to resist bearing walk and shaft fatigue under heavy belt tension. An integrated, thermal-compensated internal voltage regulator maintains a rock-solid 14.2–14.6V charging curve even under thermal soak. It retains OEM mounting lugs, serpentine offset, and factory 2-pin electrical connectivity for true plug-and-play installation without bracket modifications.

What's Included

• 1 High Output 350-Amp Alternator

Technical Specifications

Compatibility

• 2017 RAM 4500 6.4L HEMI V8 (Tradesman, SLT Chassis Cab)
• 2018 RAM 4500 6.4L HEMI V8 (Tradesman, SLT Chassis Cab)
• 2019 RAM 4500 6.4L HEMI V8 (Tradesman, SLT, Laramie, Limited Chassis Cab)

Frequently Asked Questions & Fitment Warnings

Does this fit the DP 4500?

Yes, this is a direct bolt-on fit for the 2017-2019 RAM 4500 equipped with the 6.4L HEMI gas engine; it does not fit 6.7L Cummins Turbo Diesel models.

Do I need to upgrade my main power wiring?

To safely pull the full 350-amp rated output, executing a "Big 3" upgrade with 1/0 AWG fused power wire and engine ground cables is recommended to prevent thermal choking through factory wiring harnesses.

The RAM Commercial Standard

Commercial chassis-cab work demands uncompromising electrical delivery, whether operating hydraulic cranes or maintaining fleet lighting on cold worksites. Built to industrial specifications, this heavy-duty unit withstands heavy duty cycles without voltage collapse.