About TRQ: TRQ is a trusted brand dedicated to making every repair a success story by combining premium parts with easy installation. Each TRQ part is engineered by a team of automotive experts to meet or exceed OEM standards, delivering enhanced performance and maximum longevity. With rigorous in-house testing, the brand ensures superior fit and function across every product line. TRQ also provides customers with best-in-class, step-by-step installation videos—so you can complete repairs with confidence, whether you're a first-time DIYer or an industry professional.
Product Features
Engineered to match exact vehicle specifications
Upgraded Service Life: Pressure-Fit High-Capacity Diodes for improved heat dissipation
Improved Reliability: Double insulated rotors and stators to reduce signal degradation
Returns: Parts with electrical components cannot be returned once installed.
Attention California Customers:
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
This part fits
7 vehicles spanning 2006-2007.
Fits these Makes
Select vehicle
Year
Make
Model
Description
2006
Chevrolet
Silverado 2500 HD
Chevrolet Silverado 2500 HD V8 6.6L Alternator TRQ ALA90124
2007
Chevrolet
Silverado 2500 HD Classic
Chevrolet Silverado 2500 HD Classic V8 6.6L with Single Alternator Alternator TRQ ALA90124
2007
Chevrolet
Silverado 3500 HD
Chevrolet Silverado 3500 HD V8 6.6L with Single Alternator Alternator TRQ ALA90124
2006
GMC
Sierra 2500 HD
GMC Sierra 2500 HD V8 6.6L Alternator TRQ ALA90124
2007
GMC
Sierra 2500 HD Classic
GMC Sierra 2500 HD Classic V8 6.6L with Single Alternator Alternator TRQ ALA90124
2006
GMC
Sierra 3500
GMC Sierra 3500 V8 6.6L Alternator TRQ ALA90124
2007
GMC
Sierra 3500 HD
GMC Sierra 3500 HD V8 6.6L with Single Alternator Alternator TRQ ALA90124
Part Interchange
Brand Label
Part Number
WAI
8489N
Remy
P8570
BBB Industries
N8489
Remy
20092
Quality-Built
15721
ACDelco
334-2732A
Power Select
8489N
BBB Industries
8489
USA Industries
8489
Powerite Automotive
8489
Auto Plus
8489
Rotex
8489
Bosch
AL8520X
Remy
91016
Auto Plus
N8489
NAPA
213-4827
This item may be interchangeable with parts from other brands with the above part numbers.
This information is provided only for reference and does not guarantee that the item you are
purchasing is identical to parts with part numbers from the brands listed above.
To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
Lifetime Warranty
This item is backed by our limited lifetime warranty. In the event that this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
Returns: Parts with electrical components cannot be returned once installed.
FREE Shipping is standard on orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii and Alaska.
Shipping is not available to a P.O. Box, APO/FPO/DPO addresses, US Territories, or Canada for this item.
Expedited is available on checkout to the United States, excluding Alaska, Hawaii.
Final shipping costs are available at checkout.
ALA90124
In Stock
Product Reviews
5.0/ 5
★★★★★★★★★★
1 review
5★
100%
4★
0%
3★
0%
2★
0%
1★
0%
Customer photos
★★★★★April 19, 2024
Great Quality for The Price.
Original alternator went out on my 2006 Chevy Silverado with the Duramax engine. Decided to go this route due to the price. Great price for what seems like a good quality part. Bolted right up and it seems to be doing its job just fine for my truck. We will see how it does with the test of time. Definitely recommend.
Showing 1–1 of 1 review
Customer Q&A
Got a question about this part? Post it and get answers from our team.
StanJuly 13, 2026
Do you carry an alternator for a 2006 gmc 2500 hd sierra 6 liter. I noticed that you have the one for the 6.6 liter.
Currently, we do not carry this part for your vehicle. We're always updating our inventory so please check back soon!
1A AutoJuly 14, 2026
Showing 1–1 of 1 question
Customer service
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Select Your Vehicle
Specify your vehicle's year, make and model to guarantee fit.
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
