1996-2021 GM Large Case AD244 Mount 400 Amp 4.3L 4.8L 5.3L 6.0L 6.2L Brand X High Output Alternator

1996-2021 GM Large Case AD244 Mount 400 Amp 4.3L 4.8L 5.3L 6.0L 6.2L Brand X High Output Alternator

Sold by AudioSellerz.com

Important Before Ordering:

This high output alternator is sold in the standard factory color unless custom powder coating is selected before checkout. Product photos may show a custom color or finish for example purposes only. If you do not select custom powder coating, your alternator will be built and shipped in the standard factory finish.

This alternator is hand-built, bench tested, and shipped after production is complete. Average build time is typically 2-4 weeks before shipment. Because each alternator is built to order for your vehicle and application, it does not ship immediately after purchase.

Please make sure all vehicle information, amperage options, plug type, and any custom options are selected correctly before placing your order.

If you need a serious charging upgrade for your GM truck or SUV, this Brand X 400 amp high output alternator is built for 1996-2021 GM large case AD244 mount applications using 4.3L, 4.8L, 5.3L, 6.0L, and 6.2L engines. This is a strong option for car audio builds, added accessories, and higher electrical demand where a stock alternator is no longer enough.

This product is offered in multiple fitment and regulation options, including a 1997-2004 GM 14.8v plug and play variant, a 2005-2013 PCM controlled variant, a 2014-2023 PCM controlled variant, and an externally regulated variant. That gives you more flexibility depending on the year and charging setup of your vehicle.

Brand X built this alternator for GM truck mount applications that need real output and dependable charging performance. Whether you are upgrading a daily driver with added electrical accessories or building a stronger audio system, this 400 amp alternator helps support voltage stability and charging capacity under heavier load.

Important Installation Notice
A Big 3 upgrade is required when installing a high output alternator. Factory wiring is not designed to support the increased current demand of a high amp alternator or heavy duty alternator upgrade. Failing to upgrade the charging and ground wiring can create excessive heat, voltage drop, and alternator damage, including rectifier failure. Damage caused by improper wiring or failure to complete the Big 3 upgrade is not covered.

Need a Big 3 upgrade kit?
Shop our Big 3 kits here:
https://audiosellerz.com/collections/big-3-kits

Want to learn why a Big 3 upgrade matters?
Read our guide here:
https://audiosellerz.com/blogs/audio-sellerz-blogs/big-3-upgrade-high-output-alternator-car-audio

Need custom powder coating for your alternator?

Important Product Information
Brand X high output alternators are hand-built in Ohio and bench tested before shipment. Every unit is built for your specific vehicle and application. If you are upgrading to an aftermarket alternator for car audio or performance use, proper wiring and installation are essential.

Each new unit includes an output sheet, voltage operating range, and installation directions. Every high output car alternator is tested before it ships to help ensure proper performance.

All alternators are supplied in their standard factory color unless custom powder coating is requested. Please note that the alternator shown in product photos may feature a custom color and may not be the exact color you receive unless that finish is specifically requested.

Warranty Information
All new units include a lifetime warranty on labor for repair and rebuild service. The customer is responsible for the cost of any parts needed for the repair or rebuild.

Important Ordering Information
Because each alternator is custom-built to order, average build time is typically 2–4 weeks before shipment.

By placing your order, you acknowledge and agree to the following:

• All sales are final

• Orders cannot be canceled, changed, or modified once placed

• No refunds will be issued under any circumstances

• Your alternator will ship as soon as production is complete

Thank you for your patience and for supporting custom-built products at Audio Sellerz.