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GM GENUINE PARTS

GM Genuine Parts 84143540 Alternator

  • Based on 289 reviews
Condition: New
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$315.77 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Aug 22
Order within 2 hours and 44 minutes
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Features

  • 100% newly manufactured as an exact replacement for your GM vehicle's original alternator
  • Components are tested to meet original specification requirements for remarkable durability
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specifications for fit, form, and function
  • Manufactured to meet or exceed strict quality requirements

Description

ACDelco GM Original Equipment Light Duty Alternators have components that are newly manufactured, and are GM-recommended replacement for your vehicle's original alternator. Alternators provide power to the vehicle's electrical systems and charge the battery

Manufacturer: ‎ACDelco


Brand: ‎GM GENUINE PARTS


Model: ‎Alternator


Item Weight: ‎16.42 pounds


Product Dimensions: ‎9.99 x 9.99 x 9.99 inches


Item model number: ‎84143540


Exterior: ‎Machined


Manufacturer Part Number: ‎84143540


OEM Part Number: ‎84143540


Date First Available: January 16, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Quality Part / Fast shipping
genuine part/ Upgraded the old 150-amp alternator to 170-amp / Working perfectly
Reviewed in the United States on June 27, 2026 by Kevin Cornett
    • OEM and high quality
After searching around local places for a 170 coupling alternator for my truck and nearly accepting the fact that I had to put forth the money for one, big brother popped up on Google and showed me this one! I'm very happy that it showed up because it's identical to the napa ones that are remanned, but this is brand new and much better on the cost side of things. I installed this in about 1.5 hours with minimal tools, it was very simple to do in my 14' silverado 1500. It was also 20 amps bigger than the stock one that died. I've been extremely happy with this, between pulling campers, 4 wheelers, trailers etc. I've never had a loss of power. This has been installed in my truck for about 4 months now and I have no complaints - it has held up awesome. ... show more
Reviewed in the United States on September 20, 2024 by Trainor1213
    • Wored perfectly
Arrived 1 day early. Removal & install was easy.
Reviewed in the United States on July 26, 2026 by Kevin F.
    • Factory OEM PART The Best
Part was A great Fit and easy Install Works Perfect Also Found out On GM Vehicles Have to use only A/C Delco parts Would Definitely Buy Again
Reviewed in the United States on April 21, 2025 by Hoss
    • Alternator works great
Workes great, half the price of a parts store, no messing around with core charges, and its OEM
Reviewed in the United States on November 25, 2025 by Caleb S
    • Altenator died just after the 30 day return policy.
My hope is that the seller sees this review and replaces the alternator. This is to expensive of an item to just die within 45 days and not be replaced. Alternators should last years, not die soon after the 30 days return policy! I would suggest not purchasing anything from this seller! keep your money and get your item from a more trustworthy place! If the seller responds and makes this right I will remove this review. But if you see this review, just know that I spent a lot of money and the alternator did not work, and they did not make it right and they will do the same to you! ... show more
Reviewed in the United States on May 24, 2024 by Amazon Customer
    • Value and quality.
Installed this alternator 3 months ago and I have had zero issues. My truck runs great and the part was easy to install with a quick YouTube search. The value was great compared to the local auto part retailers.
Reviewed in the United States on May 29, 2025 by Braden lane
    • Truck performance and operation dramatically improved
Waited 3 weeks before writing this review. Very pleased with the GM Genuine Parts 84143540 Alternator purchase. My truck was having issues with the audio not working sometimes and at low speeds the power steering being difficult. One morning when the truck wouldn't start, I pulled the battery and had it tested. Battery was fine so after they charged it, I brought the truck in to test the alternator and discovered it was outputting too much. Guessing the regulator inside the alternator had failed. My brother-in-law recommended getting the 170 amp version and sent me a link to this one. Installing the new alternator took about an hour and afterwards I was shocked at how much better the truck performed. It has more pep, responsiveness, and the intermittent audio issues went away. I 100% recommend this part and seller!! ... show more
Reviewed in the United States on October 9, 2025 by TB

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