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Authorized Mechman dealer
Mechman high output alternators
Bolt-in Mechman high output alternators for GM, Ford, Ram, Jeep, diesel, marine and performance builds, from cast housings to 400 amp billet units and dual alternator kits. Built in Knoxville, Tennessee from premium new components.
Authorized Mechman dealer
1978Building high output alternators since
Knoxville, TNDesigned and built in the USA
ISO 90012015-certified quality system
492+Mechman parts and kits to choose from
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Bolt-in alternators for your truck
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More output, more options
From 400 amp billet builds to dual and triple alternator kits, marine units and the voltage control parts that go with them.
Mechman High Output Alternators
492 products
The Mechman story
Building high output alternators since 1978
Mechman started in a home garage, founded by engineer Dennis Moore, and has grown into one of the leading suppliers of high output alternators to the automotive aftermarket.
Today the Knoxville, Tennessee team designs and builds charging systems for everything from daily drivers and competition car audio to work trucks, emergency vehicles, marine, off-road and 48-volt off-grid power systems.
- 1978Dennis Moore starts building high output alternators in his garage.
- 2010Matthew Young acquires Mechman, bringing a team with drag racing, off-road, marine, car audio and commercial vehicle experience.
- TodayISO 9001:2015-certified, with billet housings designed, machined and anodized in Knoxville, TN.
Premium new components
Mechman alternators are assembled from premium new components engineered or sourced to Mechman's own specifications.
- New rotors built to spec
- High-efficiency new stators
- Premium copper windings
- Heavy-duty bearings
- High-current rectifiers
- Advanced voltage regulators
- Precision-machined housings
- Billet housings machined in Knoxville
ISO
9001Honest Solutions, LLC dba Mechman is certified to ISO 9001:2015, the international quality management standard.
9001Honest Solutions, LLC dba Mechman is certified to ISO 9001:2015, the international quality management standard.
See it in action
Inside Mechman
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Why Mechman builds with premium new components
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About Mechman high output alternators
Why Alternator Outlet
The Mechman experts, not just a reseller
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10+ years with Mechman
We've worked directly with Mechman on cataloging, product photography and marketing for more than a decade.
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Fitment support
Tell us your year, make, model and electrical load and we'll help you pick the right output and configuration.
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Free shipping $199+
Free shipping on US lower-48 orders of $199 or more. Restrictions may apply.
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Lease-to-own
Get your alternator now with Acima lease-to-own, no perfect credit required. Learn more
Buying guide
How to choose a high output alternator
Add up your load
Total the current draw of your amplifiers, lighting, winch and accessories, then size the alternator to cover it with headroom.
Sizing guide →Check idle output
Maximum amps matter, but output at idle is what keeps voltage up in traffic and at the lanes. Compare both on each product.
High output explained →Upgrade the wiring
A Big 3 upgrade gives the extra current a clean path between the alternator, battery and chassis.
Big 3 guide →Match the belt & pulley
Pulley size and belt condition affect output and slip. Confirm the right belt before installing.
Belt guide →Mechman alternator FAQ
Questions, answered
Are Mechman alternators built with new components?
Yes. Mechman high output alternators are assembled from premium new components, including the rotor, stator, bearings, pulley, rectifier, voltage regulator and copper windings, engineered or sourced to Mechman's specifications.
Where are Mechman alternators made?
Mechman alternators are designed and built in Knoxville, Tennessee, where Mechman also designs, machines and anodizes its billet housings.
What size alternator do I need?
Add up the current draw of your electrical accessories and choose an alternator that covers it with headroom, paying attention to output at idle. Our sizing guide walks through it, or call us for a recommendation.
Are Mechman alternators a direct bolt-in replacement?
Mechman specializes in bolt-in high output charging solutions built for specific vehicles. Use the vehicle finder or the vehicle collections above to find the alternator made for your application.
Do I need a Big 3 upgrade with a high output alternator?
A Big 3 wiring upgrade is a common companion to a high output alternator because it helps the extra current reach your battery and chassis. See our Big 3 guide and Big 3 kits.
What warranty comes with a Mechman alternator?
Mechman alternators are covered by the Mechman warranty program. See our warranty guide and warranty page for details.
Can I finance a Mechman alternator?
Yes. Lease-to-own is available through Acima, so you can get your alternator without perfect credit. Learn more.
Is Alternator Outlet an authorized Mechman dealer?
Yes. Alternator Outlet is an authorized Mechman dealer and has worked directly with Mechman for more than ten years.
Not sure which one?
Get a recommendation
Tell us your vehicle, engine and how much power you need, and we'll point you to the right Mechman alternator, wiring and battery.