Mopar OEM Alternators: OEM or Aftermarket?

Sometimes installing an aftermarket part in your car is a good idea. We’re talking about car seat covers, spoilers, and other parts that don’t play a big hand in your car’s safety or performance. When you have to replace a part that’s in the engine bay or under the chassis, we strongly recommend getting an OEM replacement part.

OEM is simply the safer and more reliable option. This especially rings true when it comes to alternators. The alternator is such an important part that its failure will lead to a bunch of serious issues with your car’s performance.

Replace alternator

It’s crucial to replace your bad alternator with an identical OEM alternator instead of an aftermarket unit because:

1. OEM Alternators Produce the Right Amount of Electrical Energy

Like all genuine OEM Mopar parts, OEM alternators are built to perform optimally with other parts. The stator, rotor, diode, and voltage regular inside an OEM alternator are designed to meet your vehicle's electrical needs.

It’s pretty risky to install an aftermarket alternator in your car. The aftermarket alternator may be built to produce too much or too little electrical energy for your car. Also, the components inside an aftermarket alternator could go bad and wreak havoc on your car’s electrical system. For example, there’s a chance the voltage regulator will fail and possibly send too much electric current to your car battery and fry it.

2. OEM Alternators are Backed by a Great Warranty

All genuine Mopar alternators, including those sold by us, are covered by the manufacturer’s limited warranty policy. The warranty is good for either the remainder of the 3-Year/36,000-Mile New Vehicle Basic Limited Warranty or a full 24 months after the installation date, whichever is more favorable to the customer.

Aftermarket alternators are rarely backed by a warranty. If you happen to find one that is, chances are high the warranty is pretty bare-boned. Most come with a long list of stipulations in the manufacturer’s favor. That means you’d essentially have to buy a brand new alternator if your aftermarket alternator fails.

3. OEM Alternators Cost Less in the Long Run

An aftermarket alternator may seem alluring at first because the upfront cost may be less than that of an OEM alternator. However, an aftermarket alternator will likely cost you more in the long run. Aftermarket alternators are likely to fail sooner than expected. And, you probably wouldn’t be able to get one replaced under warranty.


Jeep engine bay

Image Credit: Cliff's How To Channel

Considering the three important points listed above, you’d be better off replacing your bad alternator with an OEM alternator. Please contact us if you have any questions that were not addressed in this article.