this is going to be a rare one.
This is arguably the only time you’ll ever hear us recommend going genuine over aftermarket altenators.
If you’re dealing with the well-known EcoDiesel issue that causes these units to fail, and you’re weighing up your replacement options, our advice is simple:
Buy the genuine Jeep part.
Why We’re Saying This (And Why It Matters)
Normally, we send people straight to aftermarket.
It’s cheaper, it works, and in most cases it makes far more sense than genuine.
For this particular part though, things are flipped.
Here’s the reality:
- Aftermarket replacements usually land around $800–$1,000
- The genuine Jeep part is roughly $300–$400
- Yes, you read that right, genuine is cheaper than aftermarket
That alone should make you stop and look twice.
What’s Changed With the Genuine Part?
Jeep is well aware that the original design had issues.
They’ve since revised and superseded the part.
We don’t have the full engineering breakdown on exactly what changed, but what we do have is real-world workshop data:
- We’ve been fitting the updated genuine replacement
- Since doing so, we haven’t seen the same failures return
- That’s not something we can confidently say about every aftermarket option
And that’s why this recommendation exists.
The Bottom Line
If you’re facing this issue on your EcoDiesel and you’re deciding which path to take:
- This is the one time we recommend genuine
- It’s an upgraded, superseded part
- It’s cheaper than aftermarket
- And it’s proven reliable based on what we’re seeing in the workshop
Watch the video for the full breakdown and context, and if you’re unsure whether this applies to your vehicle, reach out before spending your money.
Sometimes the cheapest option isn’t the best and sometimes, surprisingly, the genuine part actually is the cheapest option.
