Mechman Alternators 9050240

240 Amp S Series Compact Alternator for Universal Applications


This unit requires you to build a custom alternator bracket and is not direct fit. Mechman Alternators are built to order: new or used product can not be returned. Any defect will be remedied directly through the manufacturer. We invite you to call and speak with our Sales Specialists so we can ensure you have the right solution for your vehicle!

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This item has been discontinued

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Mechman S Series Alternators

The S series family of alternators offers large case alternator performance in a compact package. Highly efficient, these 6 phase alternators use less horsepower per Kilowatt than conventional 3 phase alternators. 12 press fit diodes, twin rectifier plates, and highly efficient twin internal cooling fans make them durable in any application. Smaller, lighter rotors and reduced rotating resistance make them an excellent choice for high RPM or racing applications. Like their big brothers in the Elite series, the S series have hairpin stators and high pole count rotors that create much less Electromagnetic noise than conventional 3 phase alternators.

warning label

Installation Note: The Mechman Alternators 9050240 is a Universal Application Alternator. As such, it is intended to be part of a custom install and is not intended to simply drop into any specific vehicle without modification(s). The SonicElectronix Vehicle Fit Guide does not guarantee compatibility between your vehicle and this product. SonicElectronix cannot assume responsibility for an installer's inability to integrate the alternator into a given vehicle. Please seek a hands-on professional installer's advice before moving forward with the purchase of this product.

General Features:

  • 240A High Amperage Alternator
  • Universal 6-rib & V pulley included
  • All Mechman alternators are built in the U.S. by hand
  • Every unit is dyno tested prior to shipping from Mechman's facility
  • Cast aluminum construction
  • Cutting edge 6 phase hairpin epoxy reinforced stator technology
    • Improves durability
    • Increases high RPM stability
  • Superior amperage output over OEM alternators
  • Oversized charge post ensure sturdy cable connections
  • Premium low-drag bearings
  • Ultra precision balanced rotor
    • Provides 20,000 RPM capability
  • Twin solid copper rectifiers with 12 press fit high amp diodes to spread out heat
  • 15% more efficient than typical alternators
    • Wastes less horsepower in the form of heat
  • Offer a higher amperage output at lower RPM than other alternator options
  • Precision pulley machined from bar stock
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Installation Notes

  • This unit has a self exciting internal voltage regulator that does not require anything to be plugged into the alternator
  • The installation of this unit will cause the "check battery" light to stay on in the dash
  • This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension

Not Sure Which Alternator Fits Your Vehicle?

Check the 2015 Mechman Alternators Vehicle Fit Guide to find the right alternator for your vehicle!

Product Specifications

Amperage Output
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.

Warranty and Return Policy

Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Saint Lucia

Verified Purchase
Power issues solved

August 8, 2016

This is a beast and I have it as a second alternator powering my sound system; Hifonics BRX2400.1D and 2 Pioneer GM-D8604 amplifiers, and 3 Kinetik batteries. Voltage is steady. This 1 wire hookup was a charm. Just connect the power wire and ground and it regulates the voltage on its own. Mechman is #1.

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Accessory Tools and Products

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Premium Zero Gauge "Big 3" Cable Upgrade Kit

Your Price $69.95

Perfect Match Big 3 Kit

Get the right Big 3 Kit to go with your High Output Alternator

Your Price $65.99

Mechman Alternators 1020R

Secondary Battery Installation Kit for Audio Systems up to 4000 Watts

Your Price $89.00

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
I know its a high end item after doing car audio research
Chad C on Sep 11, 2015

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Mechman Alternators 9050240

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Mechman Alternators 9050240

240 Amp S Series Compact Alternator for Universal Applications


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MechMan Alternators BIG3

Premium Zero Gauge "Big 3" Cable Upgrade Kit


Mechman Alternators 1020R

Secondary Battery Installation Kit for Audio Systems up to 4000 Watts



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