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
Mechman Alternators 8206270
270 Amp G Series Alternator for Select 1994-2012 GM Vehicles
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Mechman G Series Alternators
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?
Product Specifications
Amperage Output
270
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
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
Manufacturer
Summary of Customer Ratings & Reviews
mrknightrider2g25
Horn Lake,Ms.
mechman
October 27, 2014
62 of 75 found this helpful
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Descaro
San Jose
Best alt
October 20, 2014
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
56 of 71 found this helpful
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Dmo
Franklin, Ky
A must have for any basshead
September 9, 2016
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!
1 of 1 found this helpful
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Hawhee
Bismarck ND
Awsome a great pick fitted perfect
December 8, 2015
This alternator is a perfect fit and powerful output I'm very pleased with this product
1 of 1 found this helpful
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Anthony
Buffalo, NY
Verified Purchase
2nd time around
April 16, 2018
Second time going thru sonic for an alternator as always great service and a strong support team..thank you
0 of 0 found this helpful
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Robert
Philadelphia, MS
Verified Purchase
Great Product
February 21, 2018
Alternator is very powerful! My sound system is sounding much better!!
0 of 0 found this helpful
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Chad
Westvirginia
Awesome alternator
August 18, 2016
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
0 of 0 found this helpful
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Speedy
Las Vegas
The best!!!!
August 17, 2016
Just one word... Power!!!!!! And a lot improve on your electric system !!! Just the best upgrade for your sound system
0 of 0 found this helpful
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Anthony
New york
Powerfull!
August 1, 2016
Right out of the box my voltage sits at 14.7 all day long with this alternator.. not too crazy about the design of the power nd ground studs on it, as it will easily strip out of the casing if torqued too tight especially the ground.. but as far as power it's Allllll there.
0 of 0 found this helpful
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Starlit
OROVILLE, CA
mechman
April 29, 2016
I would definitely recommend this altenator to any one great buy, good price, I didn't get a logo sticker though
0 of 0 found this helpful
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Descaro
San Jose
Still pounding
March 7, 2016
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
0 of 0 found this helpful
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Get the right Big 3 Kit to go with your High Output Alternator
Your Price $79.99
Secondary Battery Installation Kit for Audio Systems up to 4000 Watts
Your Price $89.00
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Product Summary
Manufacturer
Model Number
8206270
Weight
18.00lbs
Internal SKU
g8206270
Internal Product ID
79343
Why shop Sonic?
Real Service Powered by Real People
Customer Testimonial
“
I called and got John who has great customer service. I purchased through him and Sonic Electronix and my item is on it's way now. Thanks everyone.____
”
- Bryan G.
from Campbellsville, KY
See more...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 8206270
