Autotech Engineering

Autotech Engineering has been building high output alternators in Riverside, California since 1985. If your audio system pulls more current than the factory alternator can keep up with, this is where most serious builds start. We recommend Autotech to customers who are serious about keeping their voltage up.

Why upgrade to a high output alternator

Every amplifier you add draws current from your charging system. When the alternator cannot keep up, voltage drops, lights dim and your amps lose power. A properly sized Autotech alternator keeps voltage stable so your system plays clean and your batteries stay charged.

• Car audio builds: outputs from about 180 to 350 amps on popular platforms
• Custom and classic vehicles: high output units for builds with added electrical load
• Off-road, marine and racing: select applications for winches, lighting and accessories

How to choose the right Autotech alternator

Start with your vehicle and engine, then match the part number to your mounting and pulley. Look at idle output, not just peak amperage, because idle is where most systems struggle in traffic. A good rule is to plan for your total amplifier current draw plus the vehicle's own load. Most high output installs also need a Big 3 wiring upgrade so the extra current can actually reach your batteries.

Note that some product photos show original equipment for reference, and the alternator you receive may look different.

Learn more in our Autotech Engineering brand overview, or pair your alternator with car audio batteries.