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Mechman Alternators 8206270

270 Amp G Series Alternator for Select 1994-2012 GM Vehicles

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• 270A High Output Cast Aluminum Alternator
• For use with Select 1994-2012 GM Vehicles
• Heavy Duty Regulators
• Premium NTN Bearings
• Low RPM Output
• 100,000 Mile Durability

See compatible vehicles Learn more about the g8206270

We apologize

This item has been discontinued

Description


Mechman Alternators brand icon

Authorized dealer


The hugely popular G series of large case 3 phase alternators have been tried and true for over 15 years. These units offer excellent low RPM output, with 100,000 mile durability. This G series unit features Mechman's custom solid copper rectifier with large 65 amp press fit diodes and over sized output stud for excellent durability. It cranks out over 165 amps at just 600 RPM engine speed on any standard GM truck, with full 270+ amps at anything above 1800 rpm engine speed! A 46mm hard anodized billet aluminum 6 rib pulley is used to maximize low RPM output, so a 1/2" to 1" shorter than stock length belt (not included) is recommended for optimum belt tension. The 270 amp G series units are made in the USA and come with a 2 year warranty.

General Features:

  • 270 amp alternator
  • For use with select 1994-2012 GM vehicles
  • Excellent low RPM output
  • Incredibly durable design
  • Custom designed solid copper rectifier with 6 press fit high amp diodes to spread out heat
  • Heavy duty regulator
  • Premium NTN bearings
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty

Compatibility List

  • Buick
    • 2004 - 2006 Rainier 5.3 Liter Engine
  • Cadillac
    • 1999 - 2000 Escalade 5.7 Liter Engine with 105 Amp Factory Alternator
    • 2002 - 2004 Escalade 5.3, 6.0 and 6.2 Liter Engines
  • Chevrolet
    • 1996 - 2005 Astro 4.3 Liter Engine
    • 2002 - 2004 Avalanche All Engines
    • 1998 - 2002 Camaro 5.7 Liter Engine
    • 2001 - 2012 Express Van All Engines
    • 1996 - 1999 Full Size Truck 5.0 Liter Engine
    • 1996 - 2000 Full Size Truck 5.7 Liter Engine
    • 1996 - 2000 Full Size Truck with Factory CS130D Alternator
    • 1996 - 2004 Full Size Truck 4.3 Liter Engine
    • 1999 - 2004 Full Size Truck 4.8 Liter Engine
    • 1999 - 2004 Full Size Truck 5.3 Liter Engine
    • 1999 - 2004 Full Size Truck 6.0 Liter Engine
    • 2001 - 2005 Full Size Truck 8.1 Liter Engine
    • 2001 - 2006 Full Size Truck 6.6 Liter Diesel Engine
    • 1994 - 2004 S-10 / Blazer 4.3 Liter Engine
    • 2003 - 2004 SSR 5.3 Liter Engine
    • 2005 - 2006 SSR 6.0 Liter Engine
    • 1996 - 1999 Subruban 5.7 Liter Engine with 105 Amp Factory Alternator
    • 2000 - 2004 Suburban 6.0 Liter Engine
    • 2001 - 2006 Suburban 8.1 Liter Engine
    • 2002 - 2004 Suburban 5.3 Liter Engine
    • 1996 - 1999 Tahoe/Full Size Blazer 5.7 Liter Engine with 105 Amp Factory Alternator
    • 2000 - 2004 Tahoe/Full Size Blazer 4.8 Liter Engine
    • 2000 - 2004 Tahoe/Full Size Blazer 5.3 Liter Engine
    • 2000 - 2004 Tahoe/Full Size Blazer 6.0 Liter Engine
    • 2006 Trailblazer 6.0 Liter Engine
    • 2003 - 2006 Trailblazer 5.3 Liter Engine
  • GMC
    • 2006 Envoy 6.0 Liter Engine
    • 2003 - 2006 Envoy 5.3 Liter Engine
    • 1996 - 1999 Full Size Truck 5.0 Liter Engine
    • 1996 - 2000 Full Size Truck 5.7 Liter Engine
    • 1996 - 2000 Full Size Truck All Engines with 105 Amp Factory Alternator
    • 1999 - 2004 Full Size Truck 4.3 Liter Engine
    • 1999 - 2004 Full Size Truck 4.8 Liter Engine
    • 1999 - 2004 Full Size Truck 5.3 Liter Engine
    • 1999 - 2005 Full Size Truck 6.0 Liter Engine
    • 2001 - 2005 Full Size Truck 8.1 Liter Engine
    • 2001 - 2006 Full Size Truck 6.6 Liter Diesel Engine
    • 1996 - 2004 Jimmy 4.5 Liter Engine
    • 1994 - 2004 S-15 4.3 Liter Engine
    • 2001 - 2009 Savana Van All Engines
    • 1995 - 2004 Sonoma 4.4 Liter Engine
    • 1996 - 1999 Yukon 5.7 Liter Engine with 105 Amp Factory Alternator
    • 2000 - 2004 Yukon 4.8 Liter Engine
    • 2000 - 2004 Yukon 6.0 Liter Engine
  • Hummer
    • 2003 - 2007 H2 6.0 Liter Engine
  • Oldsmobile
    • 1994 - 2001 Bravada 4.3 Liter Engine
  • Pontiac
    • 1998 - 2002 Firebird 5.0 and 5.7 Liter Engines

NOTE: Some GM vehicles equipped with the heavy duty charging package and CS144 alternator will require a harness adapter in order for the OEM alternator plug to fit. Some 2005 and newer GM's have a 2 pin connection that isn't compatible with this unit. Please check your vehicle's original alternator plug and compare to the plug photo to verify proper fitment before ordering. Adapter harnesses are available (sold separately) for customers with rectangular shaped alternator plugs For customers desiring adjustable voltage, these units are compatible with the Adjustable Voltage Boost module for 1996 - 2004 GM 4 pin oval connectors.



Not Sure Which Alternator Fits Your Vehicle?


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

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

  • 1998 Pontiac Firebird
  • 1999 GMC Sierra 1500
  • 1999 GMC Sierra 2500
  • 1999 Pontiac Firebird
  • 2000 GMC Sierra 1500
  • 2000 GMC Sierra 2500
  • 2000 GMC Yukon Denali
  • 2000 GMC Yukon XL 1500
  • 2000 GMC Yukon XL 2500
  • 2000 Pontiac Firebird
  • 2001 GMC Savana 1500
  • 2001 GMC Savana 2500
  • 2001 GMC Savana 3500
  • 2001 GMC Sierra 1500
  • 2001 GMC Sierra 1500 HD
  • 2001 GMC Sierra 2500
  • 2001 GMC Sierra 2500 HD
  • 2001 GMC Sierra 3500
  • 2001 GMC Sierra C3
  • 2001 GMC Yukon Denali
  • 2001 GMC Yukon Denali XL
  • 2001 GMC Yukon XL 1500
  • 2001 GMC Yukon XL 2500
  • 2001 Pontiac Firebird
  • 2002 Cadillac Escalade
  • 2002 GMC Savana 1500
  • 2002 GMC Savana 2500
  • 2002 GMC Savana 3500
  • 2002 GMC Sierra 1500
  • 2002 GMC Sierra 1500 HD
  • 2002 GMC Sierra 2500
  • 2002 GMC Sierra 2500 HD
  • 2002 GMC Sierra 3500
  • 2002 GMC Sierra Denali
  • 2002 GMC Yukon Denali
  • 2002 GMC Yukon Denali XL
  • 2002 GMC Yukon XL 1500
  • 2002 GMC Yukon XL 2500
  • 2002 Pontiac Firebird
  • 2003 Cadillac Escalade
  • 2003 GMC Savana 1500
  • 2003 GMC Savana 2500
  • 2003 GMC Savana 3500
  • 2003 GMC Sierra 1500
  • 2003 GMC Sierra 1500 HD
  • 2003 GMC Sierra 2500
  • 2003 GMC Sierra 2500 HD
  • 2003 GMC Sierra 3500
  • 2003 GMC Yukon Denali
  • 2003 GMC Yukon Denali XL
  • 2003 GMC Yukon XL 1500
  • 2003 GMC Yukon XL 2500
  • 2004 Cadillac Escalade
  • 2004 GMC Savana 1500
  • 2004 GMC Savana 2500
  • 2004 GMC Savana 3500
  • 2004 GMC Sierra 1500
  • 2004 GMC Sierra 2500
  • 2004 GMC Sierra 2500 HD
  • 2004 GMC Sierra 3500
  • 2004 GMC Yukon Denali
  • 2004 GMC Yukon Denali XL
  • 2004 GMC Yukon XL 1500
  • 2004 GMC Yukon XL 2500
  • 2005 GMC Savana 1500
  • 2005 GMC Savana 2500
  • 2005 GMC Savana 3500
  • 2005 GMC Sierra 1500
  • 2005 GMC Sierra 1500 HD
  • 2005 GMC Sierra 2500 HD
  • 2005 GMC Sierra 3500
  • 2005 GMC Sierra Denali
  • 2005 Hummer H2
  • 2006 GMC Savana 1500
  • 2006 GMC Savana 2500
  • 2006 GMC Savana 3500
  • 2006 GMC Sierra 1500
  • 2006 GMC Sierra 1500 HD
  • 2006 GMC Sierra 2500 HD
  • 2006 GMC Sierra 3500
  • 2006 GMC Sierra Denali
  • 2006 Hummer H2
  • 2007 GMC Savana 1500
  • 2007 GMC Savana 2500
  • 2007 GMC Savana 3500
  • 2007 Hummer H2
  • 2008 GMC Savana 1500
  • 2008 GMC Savana 2500
  • 2008 GMC Savana 3500
  • 2009 GMC Savana 1500
  • 2009 GMC Savana 2500
  • 2009 GMC Savana 3500
  • 2009 GMC Savana 4500

Specifications & Details


Product Specifications
Amperage Output
270
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

8206270

Weight:

18.00lbs

Internal SKU:

g8206270

Internal Product ID:

79343

Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.8
Features
4.8
Design
4.9
Usability
4.9

Customer Reviews

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mechman

the alternator was exactly what i needed it was stronger than stated it puts out 278 amps at 1800 and i think it was 169 amps at idle was much needed and also i received it quicker from sonix electronix because they had it in stop already rather than waiting 2-4 weeks

By mrknightrider2g25 on October 27, 2014

62

found this helpful.

Best alt

Got it on my 99 trans am pushing a hifonics brz 2400 3pioneer12s and a D3400 batt.No voltage drop below 14.So far it's great

By Descaro on October 20, 2014

57

found this helpful.

A must have for any basshead

I have an 02 Tahoe with a huge audio system. I had an Iraggi 320 amp and it died on me so I needed a quick replacement. Everyone knows how slow Iraggi is on his warranties. So I bought this one. I ordered it and it was here the very next day. A+ shipping and an awesome alternator! This things holds voltage well! I usually stay in the 13s at full tilt. I'm running almost 4,000 watts. Granted I do have XS power batteries and 1/0 wire. I plan to get another one of these and run a dual alternator bracket and add more subs and amps! Buy this alternator! You won't regret it!

By Dmo on September 9, 2016

2

found this helpful.

2nd time around

Second time going thru sonic for an alternator as always great service and a strong support team..thank you

By Anthony on April 16, 2018 Checkmark Icon Verified purchase

1

found this helpful.

Great Product

Alternator is very powerful! My sound system is sounding much better!!

By Robert on February 21, 2018 Checkmark Icon Verified purchase

1

found this helpful.

Awesome alternator

Bought this for a 2005 hummer h2 I have two 12" jlw7 with two jl 1200/1 amps just for the subs did the big four upgrade run another battery lights dim was very bad until this alternator now my volts don't move these alternators are made in USA brand new they are great don't hesitate

By Chad on August 18, 2016

1

found this helpful.

The best!!!!

Just one word... Power!!!!!! And a lot improve on your electric system !!! Just the best upgrade for your sound system

By Speedy on August 17, 2016

1

found this helpful.

mechman

I would definitely recommend this altenator to any one great buy, good price, I didn't get a logo sticker though

By Starlit on April 29, 2016

1

found this helpful.

Still pounding

I have had it for 17 months now and it's still charging my system perfect.Remember most amps say full power at 14.4 volts.With out a alternator you can't do it right so just spend the money and stop getting 3 batteries

By Descaro on March 7, 2016

1

found this helpful.

Awsome a great pick fitted perfect

This alternator is a perfect fit and powerful output I'm very pleased with this product

By Hawhee on December 8, 2015

1

found this helpful.

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