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A direct-fit high-output alternator for the 2004-2007 Cadillac CTS with the 3.6L V6. It drops into the stock alternator location and uses a factory-style plug, so the OEM harness connects without adapters and the stock regulator keeps the factory voltage set point. A smaller pulley spins the unit faster to reach its full output, which means you must fit a belt 1/2 to 1 inch shorter. It suits CTS owners running extra electrical load, such as audio systems, lighting or accessories, who want more charging capacity without custom bracketry. Compared with a stock replacement, it trades plug-and-play simplicity for the belt change and the option of a different voltage regulator if you need a specific set point.
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This is a direct fit, high-output alternator for the 2004-2007 Cadillac CTS with the 3.6L V6 engine. It mounts in the stock alternator location.
It has a factory-style plug, so the OEM plug connects directly to the alternator. With an OEM-style regulator, it runs at the factory voltage set point. A different voltage regulator is needed to charge at a specific set point, and it must be purchased separately for installation.
The alternator comes with a smaller pulley, which spins it faster than a larger pulley and can help it reach its maximum output. This pulley requires a belt that is 1/2" to 1" shorter. When upgrading to a high-output alternator, the Big 3 wiring upgrade is required. 1/0 100% copper wire is recommended for it.
