Lincoln Aviator (2020-2023) Universal Joint Replacement Guide
Experiencing vibrations or clunking noises in your Aviator? It might be time to inspect your universal joints.
- Vibrations are the top symptom, but check for open recalls (20S65) and TSBs (23-2072) for your Aviator first, as they can cause similar issues.
- The standard dealer repair is often a full driveshaft replacement, while a more affordable option is replacing only the failed U-joint with an aftermarket part.
- Aftermarket U-joints from brands like Moog are often greasable, which allows for maintenance to potentially extend their service life.
- After replacing a U-joint, it is best practice to have the driveshaft professionally balanced to prevent new vibrations.
Understanding Universal Joint Failure in Your Aviator
The universal joints in your 2020-2023 Lincoln Aviator are strong, but they are wear-and-tear items. Over time, the needle bearings inside the U-joint's caps can wear out from constant movement and stress. When this happens, it creates excessive play in the driveshaft, leading to vibrations, noises, and potential driveline failure. 🎬 Watch: How to tell if your U-joint is bad While U-joints can last over 100,000 miles with proper care, factors like harsh driving conditions or lack of lubrication can cause them to fail sooner.
Important Recalls and Service Bulletins
Before diagnosing a bad U-joint, be aware of official notices from Ford/Lincoln that can cause similar symptoms:
- Recall 20S65 / NHTSA 22V-086: Some 2020 Aviator AWD models were recalled for a driveshaft that could fracture along a weld seam. This can cause a total loss of power or a rollaway if the vehicle is in Park without the parking brake on. Dealers will inspect and replace the driveshaft if needed.
- TSB 23-2072: Some 2020-2023 Aviator Hybrid models may have a vibration between 25-50 mph due to the CV joint angle, not the U-joint. The fix involves installing a shim at the driveshaft's center bearing.
- SSM 51439: This bulletin also addresses vibrations in 2020-2023 Hybrid models, pointing to the driveshaft center bearing in cold weather. The fix is a new, softer bearing. 🎬 See how to install a new driveshaft carrier bearing
Always check with a Lincoln dealer to see if these apply to your VIN, as the repair may be covered.
Choosing the Right Aftermarket U-Joint
When your Aviator is out of warranty, you have a choice between replacing the entire driveshaft assembly (the typical dealer approach) or replacing only the failed U-joint with an aftermarket part.
- OEM Driveshaft Assembly: This is the most expensive option but replaces the entire unit, including all joints and the center bearing, and comes pre-balanced from the factory.
- Aftermarket U-Joint: A much more budget-friendly repair. Brands like Moog offer direct-fit U-joints for the Aviator. The key benefit of many aftermarket U-joints is that they are greasable. They have a zerk fitting that allows you to add fresh grease periodically, which can extend the part's life.
Brand Spotlight: Moog
Moog is a well-regarded brand in the aftermarket suspension and driveline world. Their "Premium" and "Super Strength" U-joints are known for being durable and are often designed with maintenance in mind, featuring grease fittings that are sometimes absent on factory parts. For the Aviator, the available Moog U-joint is a premium, greasable part, making it a solid choice for a long-lasting repair.
Estimated Replacement Costs
Costs can vary significantly based on whether you replace the joint or the entire shaft.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Driveshaft Assembly | $800 - $2,000+ |
| New Aftermarket U-Joint (Part Only) | $30 - $50 |
| Shop Labor (U-Joint Only) | $200 - $450 |
| Shop Labor (Full Driveshaft) | $150 - $250 |
Frequently Asked Questions (FAQ)
Can I replace just one U-joint?
Yes, you can replace just the failed U-joint. However, if one has failed due to age or mileage, the others may not be far behind. It's good practice to inspect all of them and consider replacing them in pairs or all at once to save on future labor costs.
Is a vibration always a bad U-joint?
No. On the Aviator, vibrations can also be caused by unbalanced tires, a bent wheel, or the specific driveline issues noted in TSB 23-2072 and SSM 51439 for hybrid models. Proper diagnosis is key.
What is the difference between a greasable and non-greasable U-joint?
Non-greasable (or sealed) U-joints are lubricated for life at the factory. Greasable U-joints, like the aftermarket Moog option, have a fitting that allows you to add new grease. This can flush out contaminants and prolong the life of the joint if done as part of regular maintenance.
Do I need special tools to replace a U-joint?
Yes. Replacing a U-joint requires removing the driveshaft and then using a hydraulic press or a specialized U-joint press tool to remove the old joint and install the new one without damaging the driveshaft yokes. 🎬 Watch: An in-depth guide to pressing and hammering U-joints This is why many DIY mechanics choose to take the driveshaft to a machine shop for the pressing service.
Helpful Videos
Technical Specifications
OEM Part Numbers: L1MZ-4635-A
The 2020-2023 Lincoln Aviator uses a driveshaft with replaceable universal joints at the ends to connect to the transmission and rear differential. Aftermarket options like the Moog Premium U-joint feature a grease fitting in the bearing cup for serviceability.
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: