A Guide to the 2020-2021 Lincoln Aviator Alternator
Keep your Aviator's advanced electronics powered and running smoothly by understanding its charging system.
- The 2020-2021 Aviator has no specific alternator recall, but a wiring harness recall can cause similar electrical issues.
- Replacement is a moderately difficult job, and professional installation is recommended due to tight access.
- Choose a high-quality new replacement (OEM Motorcraft or a reputable aftermarket brand like MPA) to ensure compatibility with the sensitive smart charging system.
- Expect a total replacement cost between $750 and $1,200 when using a new part and professional labor.
Is Your Aviator's Alternator Failing?
A failing alternator in a 2020-2021 Lincoln Aviator can cause a range of confusing electrical problems. Because these vehicles have a sophisticated electrical system, symptoms may not always be straightforward. Pay attention to these warning signs that your alternator might be on its way out.
Choosing the Right Aftermarket Alternator
When replacing the alternator on your Aviator, you have a few choices. The decision between OEM and a new aftermarket part is important for a vehicle with such sensitive electronics.
- OEM Motorcraft: This is the original part your Aviator was built with. It's designed by Ford/Lincoln to work perfectly with the vehicle's smart charging system, which adjusts the alternator's output based on demand. Motorcraft parts are tested to meet original factory standards for performance and longevity.
- New Aftermarket (e.g., MPA): Quality aftermarket brands like MPA (Motorcar Parts of America) build new alternators designed to meet or exceed OEM specifications. These are not rebuilt parts; they are made with all-new components and offer a reliable alternative to the dealer, often with a competitive warranty. For a complex vehicle like the Aviator, sticking to a reputable new aftermarket unit is a safer bet than a lower-quality remanufactured part from an unknown brand.
Pro Tip: The 2020-2021 Aviator uses a smart charging system. Always ensure your replacement alternator, whether OEM or aftermarket, is specified as compatible with this system to avoid future electrical issues.
Known Issue: Wiring Harness Recall
There is an important recall for some 2020-2021 Lincoln Aviators with the 3.0L gasoline engine (NHTSA Recall 21V622000). A wiring harness may not be properly secured, allowing it to rub against the A/C compressor pulley. This can damage the wires, leading to a short circuit, loss of power, or even a fire. These symptoms can easily be mistaken for a bad alternator. It is critical to have a dealer check if your vehicle is affected by this recall.
Cost of Replacing a Lincoln Aviator Alternator
Here is an estimated breakdown of what it might cost to replace the alternator on a 2020-2021 Lincoln Aviator. Prices can vary based on your location and chosen repair shop.
| Part Type | Estimated Part Cost |
|---|---|
| New OEM (Motorcraft) | $475 - $630 |
| New Aftermarket | $541 - $634 |
| Remanufactured | $580 - $650 |
| Used OEM | $150 - $350 |
| Shop Labor | $195 - $290 |
Frequently Asked Questions
Is it hard to replace the alternator on a Lincoln Aviator?
Yes, it is a moderately difficult job. The alternator is located in a tight space in the engine bay. Replacement often requires moving other components, like the A/C compressor, to gain access. While possible for an experienced DIY mechanic, it is recommended for a professional due to the complexity.
What is the amperage of the stock Aviator alternator?
The standard alternator for the non-hybrid 3.0L V6 Lincoln Aviator is typically a 220-amp or 250-amp unit, depending on the vehicle's options. It's crucial to match the amperage of your original part when buying a replacement.
My battery keeps dying, but the alternator tested good. What could be the problem?
This is a common issue. First, check if your vehicle is part of the wiring harness recall, as this can cause charging-related symptoms. The Aviator's electrical system is also complex; issues with the battery monitoring system or other modules can cause a parasitic draw that drains the battery even when the car is off. A full diagnostic by a qualified technician is recommended.
Should I buy a new or remanufactured alternator?
For a modern, electronically complex vehicle like the Aviator, a new OEM or new high-quality aftermarket alternator is the safest choice. While remanufactured parts can save money, their quality can vary. A new part from a brand like Motorcraft or MPA ensures all components are fresh and tested to the latest standards.
Technical Specifications
OEM Part Numbers: L1MZ10346A L1MT10300CB
Amperage: 220A or 250A, depending on vehicle options. Pulley Type: Serpentine. Voltage: 12V. Regulator: Internal.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Lincoln Aviator: