2007 - 2008 Chevrolet Impala 3.9L Alternator

AutoTech Engineering

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12.00 LBS
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Product Overview

Available Amperages: 320amp, 240amp

  • Chevrolet            Impala  2007 - 2008          V6 3.9L 3880CC 237CID


Small Case Alternators                   Large Case Alternators

160amps  @ 650 rpms                    220amps at 650 rpms

Full amps  @ 1800 rpms                 Full amps at 1800rpms


Unless otherwise quoted or instructed, our units come supplied with the OEM Voltage output for PLUG and PLAY alternators. Voltage settings quoted are already built into the Voltage regulator inside the alternator. A reminder that PCM and ECU type vehicles means that your vehicles “brain/computer” controls the voltages.


What is a Bypass?

If you choose to have a bypass you are wiring to bypass the PCM or ECU control, and we customize a Voltage setting for your vehicle (this allows you to have a higher voltage than your PCM or ECU would allow.  This in most cases will end up having your battery light on at all times.


Need help wiring your bypass, or have questions fins out more here:

Tutorial videos & Frequently Asked Questions


Warranty: 1 year parts & lifetime labor


Order Time Frames

Build time is 14 days.

Powder Coating adds up to 5 business days

Shipping takes 5-7 days


If you use klarna pay, Sezzle or Affirm add 7 days for processing.



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