Get a new Alternator to upgrade or repair the electrical system in your 2006-2007 Chevy/GMC 6.6L LLY/LBZ Duramax. High-output Alternators are available that offer up to twice the amps of the factory units they replace. Rest assured knowing that you will be able to keep the battery fully charged, regardless of your increased power requirements. In most cases, these alternators are a direct bolt-on and require no modifications for installation. They are designed to mount in the factory location utilizing the stock belt, and existing electrical connections. When you start adding electrical accessories to your truck, the factory charging system can quickly become inadequate. Equipment such as light bars, winches, and snowplows all need substantially more power than your stock alternator can provide. Shop today and get a new alternator for your vehicle. XDP offers many of the top alternators in the industry like Leece-Neville, Mean Green, XDP, and more!