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An alternator provides electrical power to your Wrangler when it is running. It also recharges the battery, which is needed to start the engine. Because they often have greater electrical needs than regular passenger vehicles, alternators for Jeep JKs must work a bit harder. These high-output alternators supply more power and will not drain your battery, as regular alternators may if they have insufficient electricity. When adding auxiliary lighting and other Jeep lighting accessories like light bars and mounts, it is often advisable to replace your stock alternator with an aftermarket alternator. Affordable and easy to install, these powerful parts will keep you from being stranded with a dead JK.

Fitment Includes:

  • 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 and 2018 Jeep Wrangler JK
  • Islander, Rubicon, Sahara, Sport, Unlimited Wranglers

*Please see product pages for any exceptions.

2007-2018 JK Jeep Wrangler Alternators & Starters

2007-2018 JK Jeep Wrangler - Alternators

2007-2018 JK Jeep Wrangler - Starters

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Never had anything but the best on line experience with Extreme Terrain.com. Prices are always competitive. I have spoken with customer service and they have been very helpful and friendly. Shipping is always fast and has been free on items over $75. I will use them for all of my Jeep needs.

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Meet Our Team

Liz F
Liz F, 2013 Jeep Wrangler JK Quality and Training Analyst
I have always loved the outdoors and with my camping experiences, it brought me into the Jeep world. It has always been a dream to own a Wrangler of my own and recently I was able to acquire one of my own! We’ve already been off roading and camping, and each time I come up with a new mod to do when ...
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