NM8237-400A-CB Alternator

Massive Power for Competition Builds

If you are running multiple amplifiers or a high-wattage subwoofer system, your factory alternator simply cannot keep up. The Nemesis Audio NM8237-400A-CB solves this by delivering a massive 400 Amps of current. This high-output unit is built to provide maximum charging efficiency even at idle, keeping your batteries topped off and your voltage stable during heavy bass hits.

Designed as a direct fit for the 1996–2004 GM truck platform, this alternator is the backbone of any serious electrical upgrade. It features heavy-duty internal components and a high-efficiency cooling design to ensure long-term reliability under the most demanding conditions.

Fitment Applications:

This model is a direct fit for 1996–2004 GM Trucks equipped with the following engines:

• 4.3L / 4.8L / 5.3L / 6.0L / 6.6L / 8.1L

Key Features:

• 400 Amp Output: Supports high-wattage audio systems and additional electrical accessories.
• Direct Fit: Designed for easy installation in 1996-2004 GM engine bays.
• Stable Voltage: Reduces or eliminates voltage drop and headlight flickering.
• Heavy-Duty Build: Precision-wound coils and high-quality bearings for maximum durability.

Technical Specifications:

• Model: NM8237-400A-CB
• Amperage: 400 Amp
• Compatibility: GM Trucks (1996–2004)
• Color/Finish: Standard / Black