Alternator 84143540

If your vehicle needs an alternator replacement, choosing by appearance alone can leave you with a part that does not match its application. This 170-amp unit is listed for several Chevy, GMC, and Cadillac vehicles, with a 12-volt output and part number 84143540. Its higher amperage rating is the main distinction from a more basic replacement, but fitment details need careful attention: the product name and the description do not give identical year ranges for every vehicle.

What matters most

The listing specifies a 170-amp alternator, 12 volts, an S6 pulley class, an IR/IF regulator and fan, and clockwise rotation. It also gives the related part numbers 22949467 and 1042106870. Those details can help narrow down a replacement, but they do not establish that the unit will fit every vehicle in a model family. Compare the part number and the vehicle’s exact year and engine with the application information before ordering.

The product name lists Silverado and Sierra 1500 models from 2014–18, Tahoe, Yukon, and Escalade models from 2015–19, Suburban models from 2015–18, and Camaro models from 2016–18. It also names 4.3L, 5.3L, and 6.2L engines. The description gives different year ranges for some of those vehicles and does not repeat the Camaro listing, so treat the fitment claims as something to verify rather than a blanket guarantee. Keep in mind that the description’s claim of increased output versus 130-amp and 150-amp units does not, by itself, confirm a fuel-economy improvement or a benefit for every electrical setup.

How to use it

This is a replacement alternator, not a general-purpose charging accessory. In a typical repair, the vehicle’s existing alternator is removed and a compatible replacement is installed, the listing does not provide installation instructions or confirm which tools or additional parts a particular repair may need. If you are comparing it with a standard-output replacement, the 170-amp rating is the key difference to assess against your vehicle’s requirements.

For example, when sourcing a replacement for a Silverado 1500, check the model year and engine, then compare the part number on the removed unit with the numbers listed here. That extra check matters more than relying on the vehicle name alone, especially when the supplied year ranges do not line up consistently.

Practical tips

A solid pick if your vehicle matches the confirmed application and you specifically need a 170-amp alternator. The listing also describes premium bearings, high-temperature lubrication, rubber seals, and an insulating coating on the rotor and stator. These are seller-provided design claims, not details that establish real-world lifespan or performance in your vehicle.

Not the best choice if you cannot confirm fitment, or if you need installation guidance, connector details, or other specifications that are not provided. A lower-output replacement may be the more straightforward comparison if your vehicle calls for one, a higher amperage figure alone is not a reason to assume this unit is the right match.

Questions before you buy

What output does this alternator provide? The stated rating is 170 amps at 12 volts.

Which part numbers are listed? The description gives 84143540, 22949467, and 1042106870. Matching one of these is useful, but confirm the complete vehicle application as well.

What should I verify for fitment? Check your exact model year and engine against the vehicle application details. The product name and description differ on some year ranges, and Camaro appears in the name but not in the description’s vehicle list.

Is it worth it?

Consider it when you need a 170-amp replacement and can confirm the part number and vehicle fitment before purchase. Its stated output and listed part numbers give you useful comparison points, but the mixed application details are a real reason to pause and verify your specific vehicle. If that match cannot be established, choosing a replacement with clearly confirmed fitment is the safer buying decision.