High Output Alternator for Dodge Challenger (2015-2018) 5.7L

High-Output 300A Alternator for 2015-2018 Dodge Challenger (LA)

What it Does: The 300 Amp High Output Alternator replaces the factory charging unit on the 2015-2018 Dodge Challenger to eliminate critical voltage drops and deliver continuous, high-amperage stability under heavy electrical loads.

The Stock Dodge Challenger Charging Limitation

Factory charging systems on the LA chassis utilize standard alternators rated between 160A and 220A, which rapidly become a bottleneck when running aftermarket audio, auxiliary cooling, or high-draw ignition hardware. Under prolonged idle and severe thermal soak within the tight 5.7L HEMI Eagle engine compartment, factory rectifiers overheat. This thermal stress degrades internal diodes, causing system voltage to sag below 12.8V, triggering erratic PCM sensor signals, premature battery fatigue, and ignition brownouts.

The Engineering Solution

This high-output unit steps up power delivery to an uncompromising 300 amps using dense, high-purity copper hairpin stator windings and heavy-duty avalanche diode rectifiers designed to thrive in extreme heat. The precision-balanced rotor prevents belt slip at high RPM, while upgraded dual internal cooling fans maximize cross-flow ventilation across the diodes. Direct bolt-in architecture allows seamless integration into factory mounts while directly replacing OEM units 048018333AB, 48018333AB, 4804833AB, and 11575-300A.

What's Included

• 1x 300-Amp High Output Alternator

Technical Specifications

Compatibility

• 2015-2018 Dodge Challenger R/T 5.7L V8
• 2015-2018 Dodge Challenger R/T Plus 5.7L V8
• 2015-2018 Dodge Challenger R/T Shaker 5.7L V8
• 2017-2018 Dodge Challenger T/A 5.7L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the LA Challenger?

Yes, this is a direct fit for the 2015-2018 Dodge Challenger equipped with the 5.7L HEMI Eagle engine. Does not fit 3.6L V6 Pentastar, 6.4L 392, or 6.2L Supercharged Hellcat engines due to differing bracket offsets and belt layouts.

Do I need to upgrade the primary charging wire?

Yes, running a 1/0 AWG Big-3 wiring upgrade from the alternator positive post to the battery and ground is strongly recommended to safely deliver full 300-amp current without thermal throttling.

The Dodge Muscle Standard

Built to sustain aggressive track abuse and extreme electrical demands, this charging setup guarantees steady voltage so your HEMI operates at maximum ignition power and throttle response at all times.