High Output Alternator for Dodge Challenger (2009-2010) 3.5L 5.7L 6.1L

High-Amp 300A Alternator for 2009-2010 Dodge Challenger (LC)

What it Does: The 300-amp high output alternator replaces the factory charging unit on the 2009-2010 Dodge Challenger to eliminate voltage drop and deliver stable electrical current under heavy electrical loads.

The Stock Dodge Challenger Charging Limitations

The factory charging systems on LC chassis Challengers rely on stock units rated between 140A and 160A. Under thermal stress and engine-bay heat soak, internal resistance increases, causing significant amperage drop at idle. When running auxiliary electrical loads—such as aftermarket fuel systems, high-draw radiator fans, standalone ignition coils, or high-wattage audio amplifiers—the OEM unit cannot maintain system voltage. This causes voltage sag below 12.8V, inducing ignition coil starvation, erratic sensor telemetry, and accelerated battery drain.

The Engineering Solution

Manufactured in the USA, this heavy-duty 300-amp alternator utilizes precision copper windings and heavy-gauge internal rectifiers to supply sustained current across the entire RPM range. Featuring high-temp avalanche diodes and enhanced internal heat dissipation, it resists thermal degradation and maintains a solid 14.4V to 14.8V charging threshold under peak accessory loads. Designed as a direct bolt-in unit, it directly interchanges with factory hardware and OEM numbers including 4896805AD, 421000-0620, and 11383.

What's Included

• 1 x 300 Amp High Output Alternator

Technical Specifications

Compatibility

• 2009-2010 Dodge Challenger 3.5L V6
• 2009-2010 Dodge Challenger 5.7L HEMI V8
• 2009-2010 Dodge Challenger 6.1L SRT8 HEMI V8

Frequently Asked Questions & Fitment Warnings

Does this fit the LC Challenger?

Yes, this is a direct fit for the 2009-2010 Dodge Challenger equipped with the 3.5L V6, 5.7L HEMI, or 6.1L HEMI engine.

Do I need to upgrade my main power cabling when installing this alternator?

Yes, running a 1/0 AWG "Big Three" power wire upgrade with an inline 300A fuse is strongly recommended to safely deliver full current to the battery without melting stock harness wiring.

The Dodge Muscle Standard

Modern Mopar muscle requires unrelenting electrical current to keep fuel pumps primed and ignition sparks sharp at high engine speeds. This high-output unit preserves complete electrical stability under wide-open throttle conditions.