1999-2004 Jeep Grand Cherokee Wrangler 4.0L Brand X High Output Alternator

1999-2004 Jeep Grand Cherokee Wrangler 4.0L 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 lead time right now is typically 2-3 weeks, with some units taking as long as 5-6 weeks depending on production, options, and workload. These units are built by hand with quality being the top priority, and that does take time.

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

If you are upgrading the electrical system in your 1999-2004 Jeep Grand Cherokee or Jeep Wrangler 4.0L, this Brand X High Output Alternator gives you a wide range of charging options built around your power goals. Whether you are supporting a stronger daily driver, a serious car audio system, off-road accessories, upgraded lighting, or more electrical demand than the factory alternator was designed to handle, this listing gives you multiple alternator options to match the build correctly.

This application includes Small Case and custom Large Case options, plus the newer XL case lineup for customers who want the strongest idle output available. That gives you options from a simple charging upgrade all the way up to a serious high-output electrical setup.

Small Case Alternator Options

• 180 amp - $285 shipped to the continental US
• 200 amp - $305 shipped to the continental US

The 180 amp and 200 amp small case units offer 150+ amps at idle, making them a strong choice for customers who want a clean charging upgrade without jumping into the larger output options.

• 250 amp - $329 shipped to the continental US
• 275 amp - $365 shipped to the continental US
• 300 amp - $389 shipped to the continental US
• 320 amp - $425 shipped to the continental US

The 250 amp through 320 amp small case units idle around 170-180 amps at engine running temperature. These are a strong fit for louder car audio systems and customers who need more charging support than a mild alternator upgrade can provide.

• 350 amp small case - $455 shipped to the continental US

The 350 amp small case unit requires 800+ engine idle RPM to function correctly and at least a 7" crank pulley. With the correct setup, you will see 180+ amps at idle from the 350 amp small case option.

Custom Large Case Hairpin Alternator Options

• 250 amp large case hairpin - $465 shipped to the continental US
• 270 amp large case hairpin - $495 shipped to the continental US
• 320 amp large case hairpin - $529 shipped to the continental US
• 370 amp large case hairpin - $565 shipped to the continental US
• 400 amp large case hairpin - $595 shipped to the continental US

The custom large case hairpin units offer 200+ amps at idle and more durability than any other unit on the market. These are a strong choice for customers with heavier electrical demand, stronger car audio systems, larger amplifier setups, or builds that need better durability and stronger idle output.

XL Case Alternator Options

• 300XL - $649 shipped to the continental US
• 425XL - $695 shipped to the continental US
• 475XL - $795 shipped to the continental US

The XL case options are the newest and strongest choices in this lineup. The 300XL, 425XL, and 475XL options offer around 240-250 amps at idle depending on idle RPM. If your Jeep build needs the strongest idle performance available, these are the top options in this listing.

If you are shopping for a high output alternator for a 1999-2004 Jeep Grand Cherokee 4.0L, a high output alternator for a 1999-2004 Jeep Wrangler 4.0L, a Brand X alternator for car audio, or a custom charging upgrade with strong idle output, this is a strong fit for the job.

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:
shop Big 3 upgrade kits

Want to learn why a Big 3 upgrade matters?
Read our guide here:
read the Big 3 high output alternator guide

Need custom powder coating for your alternator?
Add the custom powder coat option directly from the Brand X collection page before placing your order. If you do not see the powder coat color you want, please go to Prismatic Powders, find the color you want that is currently in stock, and then send us the direct link through the website before ordering so we can confirm availability for your custom alternator.

Important Product Information
Brand X high output alternators are hand-built 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, off-road accessories, lighting, winches, 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 units come with a lifetime warranty at parts cost for repair or rebuild. The customer is responsible for the cost of any parts needed for the repair or rebuild.

Important Ordering Information
Average lead time right now is typically 2-3 weeks, with some units taking as long as 5-6 weeks. These alternators are built by hand with quality being the top priority. Due to that, it does take time, and we appreciate your patience.

All listed prices are shipped to the continental US.

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.