Attention! This is a Computer-Controlled Charging System

This vehicle uses a factory computer (ECU/PCM) to control charging voltage, so voltage will continue to follow the factory system behavior.
This high-output alternator still provides the increased amperage you purchased, delivering stronger performance under load and faster battery recharge
Custom or fixed voltage output will require ECU tuning.

S Series

The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow ensure long service life, even in severe conditions. The 320 amp model offers the best balance between peak output, and output at engine idle RPM.

NOTE: This alternator comes equipped with a 46mm diameter overdrive pulley that will require the installation a 1/2 inch to 1 inch shorter than stock length belt (not included) for proper belt tension.

Notes:

Name	Model	Engine	Year(s)	Amperage
CHRYSLER	Aspen	4.7	07-09	320a
DODGE	Dakota	3.7 / 4.7	07-10	320a
DODGE	Durango	3.7 / 4.7	07-10	320a
DODGE	Full Size Truck	3.7 / 4.7	07-13	320a
DODGE	Nitro	3.7	07-09	320a
JEEP	Commander	3.7/4.7	07-10	320a
JEEP	Grand Cherokee	3.7	07-10	320a
JEEP	Grand Cherokee	4.7	07-10	320a
JEEP	Liberty	3.7	07-12	320a
RAM	1500 Pickup	3.7/4.7	11-13	320a