WELCOME TO AUTOTECH ENGINEERING
Since 1985, we have been producing the highest quality High Output Alternators For Car Audio, Marine, Off Road and Racing Performance and offer MORE vehicle options than any other company. If your vehicle application is not listed, give us a call or email us for more assistance. Se Habla Español. Please note that photos on our catalog are for "reference" only showing the OEM the vehicle comes with. We build a Denso Hairpin style Alternator which may appear different, but will fit with added spacers or brackets provided (some washers and bolt may need to be purchased separately). Please read our Technical help instruction sheet for additional information.
1-800-345-4952 (Inside USA) / 1-951-299-8321
Info@autotechengineeringusa.com
Open Monday Thru Friday 9am-4pm PST
Free Shipping Inside Continental USA (AK, HI, PR, GUAM Additional)
High Output Alternators
We are constantly adding New applications to our online catalog . If you cannot find your vehicle does not mean we cannot build one. Contact us at 1-800-345-4952 for a custom quote today. Most "common GM" Units are available in stock, but Custom High Output units are custom built, so an average lead time of One (1-2)Week is required for orders. ALL Alternator orders are Non-Refundable.
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Siempre estamos agregando aplicaciones nuevos. Si no encuentran su vehiculo, comunican se con nosotros directo por email, whattsapp o telefono. Muchos de unidades "comon" estan desponible, pero unidades de Alto Amperage "especiales" require una semana para fabricar.
EXCEEDING THE STANDARD
Internal Voltage Regulators
All of our Internally regulated Alternators are supplied with Brand New Voltage regulators that meet or exceed OEM specifications. Voltage Set Points are set to OEM unless otherwise noted.
- Multiple Voltage bypass options
- Readily available for AGM
- Lithium Battery options.
Dual Bridge Heavy Duty Rectifiers
All Denso Style Hairpin Alternators are supplied with Heavy Duty, Dual Bridge Heat sinks along with 12 Press Fit Avalanche diodes.
ALL our 128mm alternators are supplied with 12-50amp Avalanche Diodes for maximum durability.
ALL our 138mm alternators are supplied with 12-50amp or 12-80amp Avalanche Diodes for maximum durability.
Premium Bearings
All our High Output Alternators and starters come standard with OEM, High Temperature Bearings for long life.
Amperage Ratings
We are the only company that utilizes 3 different Test Benches to ensure proper functionality of our units. All units are rated at max output at 1800 car RPM and Idle output of 650 car RPM because few cars idle at 800rpm.
Proof in Performance
While we do not post EVERY unit online as this would slow down our production and shipping times, we do show various "clamp proof" videos on social media, You Tube and our website. We always publicly show "Proof in Performance" with many output videos with ratings at 650rpm and 1800rpm. PROOF IN PERFORMANCE!!!
Warranty Policy
All units come with our Lifetime Labor and 1 Year Parts, Limited Warranty. Warranty covers any premature bearing or Internal voltage regulator failure. It does not cover failures due to improper installation or burned units.
NOTE: Warranty does not cover "ABUSE" of units and Improper installation. All units are Custom built, so Alternators are NON Refundable. Each unit is tested TWICE before it leaves our facility, ensuring proper amperage and voltage for each order placed. Do your due diligence before ordering. Photos on website are for reference only. We manufacture a Denso hairpin design which may not look like your factory alternator but will fit (some spacers or brackets may be included for proper installation and a shorter belt is required).
TESTING PROCESSES
Computerized Tester
AutoTech Engineering is the ONLY company that employs three (3) different Test machines to ensure that EVERY unit meets our custom specifications. Our Computerized tester is fully automated which allows us to test for:
- Ripple current
- Voltage setpoints
- Feedback Voltage
- Leakage
- Multiple "Rotor" RPM amperage outputs
- Rotor speed tests up to 6000rpm (2000 car rpm)
AutoTech Engineering tests its units under actual Vehicle RPM speeds, Most vehicles DO NOT Idle at 800rpm, nor cruise at 4000rpm so we test under TRUE Vehicle Conditions.
Load Bank Testers
AutoTech Engineering employs the latest in testing equipment using Jimco Carbon Pile testers which allows us to test for:
- Voltage setpoints
- Ripple Current
- Multiple "Rotor" RPM amperage outputs
- Rotor speed tests up to 6000rpm (2000 car rpm)
Stator / Rotor Tester
AutoTech Engineering strives to Pre qualify ALL of its Internal Components. We don't simply purchase parts to install into our Alternators. Each part is carefully pre-qualified and Tested to ensure that the it meets or exceeds OUR standards.
Rectifier / Diode Tester
AutoTech Engineering strives to Pre qualify ALL of its Internal Components and suppliers. We don't simply purchase parts to install into our Alternators without testing them first. Each part is carefully pre-qualified and Tested to ensure that the it meets or exceeds OUR rigorous standards.
Financing Available
Did you know that we offer Finance options for our High Output Alternators? Up to 100 days NO interest fees. Just follow the simple steps and Text 28468 to #48078 to apply or Click the Link below Image.
Just as the pursuit of automotive performance requires reliable and tailored technical solutions, managing health—especially for chronic conditions like type 2 diabetes—demands an equally precise and personalized approach. Much like our high-output alternators are engineered to meet specific needs, medications such as Ozempic provide a targeted solution for regulating blood sugar and improving quality of life. To buy Ozempic in this country by following this link to this website https://wirelesslifesciences.org/2025/06/wegovy/ and learn how to treat type 2 diabetes, it’s essential to rely on trustworthy sources where product authenticity and medical follow-up are guaranteed. Diabetes is a complex condition that, without proper management, can lead to serious complications. Just as an incompatible alternator can undermine a vehicle’s performance, improper or low-quality treatment can worsen health outcomes. That’s why it’s critical to choose proven solutions from reputable suppliers known for their reliability and transparency. Finally, just as our technical team is available to guide customers in their choices, professional medical support remains indispensable for optimizing treatment effectiveness. Taking care of your health, like maintaining a vehicle, requires constant attention and the right tools—don’t leave it to chance.
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CONTACT US / CONTACTENOS:
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HIGH PERFORMANCE OUTPUT RATINGS:
GOLD SERIES AND RATINGS (170amp-320amp (128mm Denso Style)
-170-180amp produce 170-180amp at 1800rpm and 110-120amp at 650rpm
-240amp produce 240-250amp at 1800rpm and 130-140amp at 650rpm
-320amp produce 320-340amp at 1800rpm and 160-180amp at 650rpm
COMPETITION SERIES AND RATINGS (138mm Denso Style)
-240-250amp produce 250-260amp at 1800rpm and 160-170amp at 650rpm
-270amp produce 280-290amp at 1800rpm and 170-180amp at 650rpm
-320amp produce 340-350amp at 1800rpm and 180-190amp at 650rpm
-350amp produce 350-360amp at 1800rpm and 190-200amp at 650rpm
-370amp produce 380-390amp at 1800rpm and 210-220amp at 650rpm
-400amp produce 400amp to 420amp at 1800rpm and 220-230amp at 650rpm
-500 amp (GM Truck and Ford Trucks) produce 570-590amp at 2000rpm and -250-260amp at 800rpm (required)
*COMPETITION SERIES (CS)
12-80 Amp Avalanche Diodes
CS Series Highest possible Idle Output in the game with over 220 amps at 650rpm (proven output)
Text Message us on WhatsAppAutoTech Engineering (ATE)
6110 Jurupa Avenue, Riverside, California 92504, United States
1-800-345-4952 inside USA
1-951-299-8321 /Fax 1-909-428-1392
email: info@autotechengineeringusa.com
BLOG: https://blog.autotechengineeringusa.com/
Hours (Pacific Standard Time)
Mon 09:00 am – 04:30 pm
Tue 09:00 am – 04:30 pm
Wed 09:00 am – 04:30 pm
Thu 09:00 am – 04:30 pm
Fri 09:00 am – 04:30 pm
Sat - By Appt only
Sun- Closed
