400 Amp High Output Alternator 05-13 GM Truck 4.3L 4.8L 5.3L 5.7L 6.0L

The 400 Amp High Output Alternator is a powerful and durable alternator designed to provide maximum amperage and performance for your GM Truck. With a standard build time of 2-3 weeks, this alternator can be custom built to your specifications. However, if you need an alternator sooner, our sales associates can check for in-stock options.

Installation of this alternator is made easy with its smaller 1.75 inch diameter alternator pulley. It does require a slightly shorter drive belt for proper belt tension. It is important to note that sustained use above 5,000 RPM engine speed is not recommended. Using the correct shorter belt will ensure optimal performance and prevent unnecessary strain on the alternator.

The Elite series of alternators are known for their durability and high amperage output. With 6 phase technology, massive twin rectifier assemblies, and 12 diodes, these alternators can produce over 200 amps even at idle speeds. This makes it perfect for daily use and demanding applications.

One of the standout features of this alternator is its use of the robust 4 pin style regulator, as opposed to the OE 2 pin ECU controlled alternator. This ensures consistent voltage output and bypasses the RVC charging system on all 2005 and newer GM truck applications. Installation is a breeze with the included P101 harness and P103 module.

The 400 Amp High Output Alternator is compatible with various models and engines, including Buick Rainier, Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe, Blazer, Trailblazer, GMC Envoy, Sierra, Yukon, Hummer H2, and H3. Please refer to the fitments list for specific years and engine compatibility.

Upgrade your GM Truck's charging system with the 400 Amp High Output Alternator. With its high amperage output, durability, and easy installation, it is the perfect upgrade for demanding applications, ensuring that you have the power you need, when you need it.