High Output Alternator for RAM 4500 (2014-2015) 6.4L

High-Amp 350A Direct-Fit Alternator for 2014-2015 RAM 4500 (DD)

What it Does: The 350-amp high output alternator replaces the factory charging unit on the 2014-2015 RAM 4500 to deliver robust 12V electrical current under heavy auxiliary draw and eliminate idle voltage drop.

The Stock RAM 4500 Charging Deficit

Commercial-duty DD chassis work trucks rely heavily on supplemental electric systems including hydraulic dump bodies, utility cranes, snowplows, high-draw lighting, and in-cab communication gear. The OEM Denso-style charging system on the 6.4L HEMI struggles under these sustained workloads. At curb idle (600–700 RPM), factory stators generate insufficient current, resulting in parasitic drain from the starting battery, dimming lighting clusters, and ECM low-voltage error codes. Over extended duty cycles, standard diode packs and smaller windings suffer thermal breakdown and insulation melt, leading to premature diode failure and rotor seizure.

The Engineering Solution

Engineered for commercial-grade duty cycles, this 350-amp direct-replacement unit features heavy-gauge hairpin-style pure copper stator windings to ensure low internal resistance and maximum heat dissipation. A dynamically balanced rotor reduces high-RPM harmonics, supported by heavy-duty dual-sealed bearings capable of resisting radial belt-load deflection. The high-capacity internal voltage regulator and heavy-duty rectifier diode array maintain a solid 13.5V to 14.5V output threshold even during peak load transients. Engineered as a drop-in upgrade matching OEM mounting ears, OE belt alignment, and factory connector pinouts, it bolts straight to the 6.4L HEMI block without bracket modification.

What's Included

• 1 x 350 Amp High Output Alternator (Part # 14027-350A)

Technical Specifications

Compatibility

• 2014 RAM 4500 Cab & Chassis 6.4L V8 Gas
• 2015 RAM 4500 Cab & Chassis 6.4L V8 Gas

Frequently Asked Questions & Fitment Warnings

Does this fit the DD 4500?

Yes, this is a direct fit for the 2014-2015 RAM 4500 equipped with the 6.4L HEMI commercial gas engine; it does not fit 6.7L Cummins Turbo Diesel variants.

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

While the alternator functions on factory wiring, performing a 'Big 3' upgrade with minimum 1/0 AWG B+ charge cable and engine-to-chassis ground cables is recommended to prevent voltage drops under full 350-amp draw.

The RAM Work-Duty Standard

Heavy commercial hauling and service bodies demand relentless electrical stamina; this 350A unit provides steady auxiliary charging so job-site components, winches, and hydraulic packs run uninterrupted without depleting reserve starting power.