Mechman Alternators B8206370B

370 Amp E Series Billet Alternator with Black Finish for Select 1994-2012 GM Trucks

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Mechman Elite Series High Output Alternators

Mechman Elite Series High Output Alternators

The 6 Phase Advantage

Mechman Elite Series alternators employ cutting edge alternator technology not found in other aftermarket alternators. 6 phase hairpin stators make Elite Series alternators fundamentally more efficient than other aftermarket alternators. This technology and increased efficiency equates to incredible output at extremely low engine RPM, less energy wasted in the form of heat and more horsepower to the wheels. Also, because less heat is being generated, the internal components of Elite Series alternators last longer. This is especially beneficial on turbocharged and/or endurance racing vehicles with high engine compartment temperatures. All Elite alternators feature soldered stator and rectifier connections, with epoxy re-enforced stator connections, reducing the chance of vibration failures.

Mechman Elite Series High Output Alternators

High Pole Count

In addition, Mechman Elite Series units are built exclusively with precision balanced low-mass rotors that allow them to operate safely at shaft speeds of 20,000+ rpm. This high RPM capability, combined with excellent output at idle, gives the user a much broader operating RPM range, and more flexibility in the size of the crankshaft pulley used. A properly selected Elite Series alternator can even fix low voltage problems caused by using small diameter, or "underdriven" pulley ratios. The higher pole count in the rotor also results in less electromagnetic interference to cause problems with radios and other electronics.

Mechman Elite Series High Output Alternators

Twin Rectifiers

As a final precaution, Mechman Elite Series alternators are constructed with twin high efficiency cooling fans, and twin internal rectifier plates. While other high performance alternators have only one rectifier with 6 diodes, Elite Series units boast 12 press fit diodes with 300% more surface area to dissipate heat. These considerations to cooling airflow and heat dissipation make Elite Series high performance alternators the most durable aftermarket alternators you can buy. If you are experiencing pre-mature alternator failure, intermittent electrical accessory problems, or low voltage at any engine RPM, a Elite Series 6 phase alternator is the answer!

General Features:

  • 370A Billet High Amperage Alternator with Black Finish
  • Elite series offers the highest possible amperage and durability available in a large case alternator
  • 6 phase technology combined with massive twin rectifier assemblies
  • 12 diodes makes these alternators totally durable for daily use
  • Maintains 200+ Amps at engine idle speeds
  • High amperage alternator with superior amperage output over OEM alternators
  • Feature solid copper custom rectifiers for great durability
  • Oversize press fit diodes and premium bearings
  • Higher amperage output at lower RPM than other alternator options
  • Heavy duty regulator
  • Premium NTN bearings
  • Every unit is dyno tested prior to shipping from manufacture's facility
  • All Mechman alternators are built in the U.S. by hand
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Compatibility List

  • Buick
    • 2004 - 2006 Rainier, 5.3 Liter Engine
  • Cadillac
    • 1999 - 2004 Escalade, 5.7 / 6.0 / 6.2 Liter Engine
  • Chevrolet
    • 1996 - 2005 Astro, 4.3 Liter Engine
    • 2002 - 2004 Avalanche, All Engines
    • 1998 - 2002 Camaro, 5.0 / 5.7 Liter Engine
    • 1996 - 2012 Express Van, with 4 Pin Plug
    • 1996 - 2004 Full Size Truck, All Gas Engines
    • 2001 - 2007 Full Size Truck, 6.6 Liter Duramax Engine
    • 1994 - 2004 S-10 / Blazer, 4.3 Liter Engine
    • 2003 - 2006 SSR, 5.3 / 6.0 Liter Engine
    • 1996 - 2004 Suburban, with 4 Pin Oval Plug
    • 1996 - 2004 Tahoe/Full Size Blazer, All Gas Engines
    • 2003 - 2006 Trailblazer, 5.3 / 6.0 Liter Engine
  • GMC
    • 2003 - 2006 Envoy, 5.3 Liter Engine
    • 2006 - 2006 Envoy, 6.0 Liter Engine
    • 1996 - 2004 Full Size Truck / Sierra, 4.3 Liter Engine
    • 1999 - 2004 Full Size Truck / Sierra, 4.8 Liter Engine
    • 1996 - 1999 Full Size Truck / Sierra, 5.0 Liter Engine
    • 1999 - 2004 Full Size Truck / Sierra, 5.3 Liter Engine
    • 1996 - 2000 Full Size Truck / Sierra, 5.7 Liter Engine
    • 1999 - 2005 Full Size Truck / Sierra, 6.0 Liter Engine
    • 2001 - 2006 Full Size Truck / Sierra, 6.6 Liter Diesel Engine
    • 1996 - 2000 Full Size Truck / Sierra, 7.4 Liter Engine
    • 2001 - 2005 Full Size Truck / Sierra, 8.1 Liter Engine
    • 1994 - 2004 S-15 / Sonoma / Jimmy, 4.3 Liter Engine
    • 1994 - 2004 Safari, 4.3 Liter Engine
    • 1996 - 2012 Savana Van, with 4 Pin Oval Plug
    • 1996 - 2004 Suburban, with Oval Plug
    • 1996 - 2004 Yukon, with Oval Plug
  • Hummer
    • 2003 - 2007 H2, 6.0 Liter Engine
  • Oldsmobile
    • 1994 - 2001 Bravada, 4.3 Liter Engine
  • Pontiac
    • 1998 - 2002 Firebird, 5.0 / 5.7 Liter Engines

Installation Notes

  • 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.
  • This unit may require a rectangle to oval adapter harness if the vehicle is equiped with the HD charging option from the factory. (not common)
*Vehicles not listed cannot be confirmed as being compatible. Please contact our Sales Specialists to check if we have a solution for your vehicle, and/or contact the manufacture's support team.

Not Sure Which Alternator Fits Your Vehicle?

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

Product History:

Mechman Alternators B8206370B thumbnail
(newest, current model)
Mechman Alternators 8203370 thumbnail
(previous model, replaced by Mechman Alternators B8206370B)

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.
Buick Rainier
Cadillac Escalade
Chevy Astro
Chevy Avalanche
Chevy Blazer
Chevy Camaro
Chevy Express Van
Chevy Full Size Blazer
Chevy Full Size Truck
Chevy S-10
Chevy SSR
Chevy Suburban
Chevy Tahoe
Chevy Trailblazer
GMC Envoy
GMC Full Size Truck
GMC Jimmy
GMC Savana Van
GMC Sonoma
GMC Yukon
Hummer H2
Oldsmobile Bravada
Pontiac Firebird

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

Accessory Tools and Products

Accessories added

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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 $69.99

Mechman Alternators 1020R

Secondary Battery Installation Kit for Audio Systems up to 4000 Watts

Your Price $89.00

Browse 3 questions and 2 answers
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I bought the Mechman 370 amp alternator (model B8206370B) from you, I have a 2002 escalade with a 6.0 ,engine. the fitment guide on your web site says this model wont fit my 2002 Escalade, but the Mechman web site says, that this is the one that fits my vehicle. will this one fit my vehicle? let me know Steve
Steven B on Jan 14, 2017
Best Answer: Hi Steven,

Despite the info our fitguide is pulling up, we confirm that the fit includes 1999 - 2004 Escalade, 5.7 / 6.0 / 6.2 Liter Engine.
Reply · Report · Rick MStaff on Jan 16, 2017
· Add Answer · I Have This Question Too (0)
What type of Watt or Volts does this thing produce?
Nas J on Jan 4, 2016
Best Answer: Hey Nas,

As specified, it is a 370A alternator. Alternators don't have a 'wattage' or 'voltage' rating. You can use Ohms Law to figure out the potential wattage output/handling, sure, but that is always best case scenario and isn't a practical figure to build around. The voltage on the other hand, is intended to be like all alternators, which means somewhere around 12-14v .
Reply · Report · Rick MStaff on Jan 4, 2016
· Add Answer · I Have This Question Too (0)
What RPM ?
Mike B on Dec 8, 2016
· Add Answer · I Have This Question Too (0)

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 B8206370B

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Mechman Alternators B8206370B

370 Amp E Series Billet Alternator with Black Finish for Select 1994-2012 GM Trucks


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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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