2011-2014 Ford Edge & 2011-2015 Lincoln MKX Fender Liner: Noise, Protection & Part Numbers
This guide clarifies common part number confusion and details the symptoms, replacement costs, and inspection points for the front fender liners on your Ford Edge or Lincoln MKX.
- Verify you are buying the correct part: The fender liners are part numbers CT4Z16102B (Right) and CT4Z16103B (Left), NOT the commonly confused radiator support part (CT4Z16138A).
- These fender liners fit all engine options for the specified years, including the 2.0L, 3.5L, and 3.7L engines.
- A damaged liner can cause more than just noise; it exposes the engine bay and chassis to water and debris, leading to potential rust and electrical issues.
- Replacement is a simple, inexpensive DIY job that can be done in under an hour with basic tools.
Symptoms of a Bad or Missing Fender Liner
When a fender liner fails, the symptoms are usually easy to spot and hear. Look out for these common signs:
- Flapping or Scraping Noises: The most common symptom is a noise coming from the wheel well, especially at higher speeds. A loose or torn liner will flap in the wind or scrape against the tire, creating a distinct sound.
- Visible Damage: A quick visual inspection can reveal cracks, large holes, or sections of the plastic liner hanging down. You may also notice that it has become brittle from age and sun exposure.
- Dragging on the Ground: In severe cases, a large piece of the liner can break loose and drag on the road, creating a loud scraping sound.
- Debris in Engine Bay: If you notice an unusual amount of dirt, mud, or water splashing into the engine compartment after driving in the rain, it's a strong sign your fender liner is damaged or missing.
- Corrosion on Components: Check the frame, suspension parts, and brake components visible in the wheel well. The beginning of rust or corrosion in these areas indicates the liner is no longer protecting them from moisture.
Important: Part Number & Engine Fitment Clarification
There is significant confusion regarding the part numbers for these vehicles. Many sources incorrectly list part numbers BT4Z16138A or CT4Z16138A for the fender liner. These are actually the part numbers for the entire front radiator support assembly, a much larger and more expensive component.
The correct OEM part numbers for the plastic front fender liners are:
- Front Right (Passenger Side): CT4Z16102B
- Front Left (Driver Side): CT4Z16103B
Furthermore, the warning that this part only fits 3.5L or 3.7L V6 models applies to the radiator support, not the fender liners. The fender liners fit all engine options for the 2011-2014 Ford Edge and 2011-2015 Lincoln MKX, including the 2.0L 4-cylinder, 3.5L V6, and 3.7L V6 models.
Buying a Used Fender Liner
A used OEM fender liner is an excellent, budget-friendly choice. Because they are simple plastic parts without mechanical or electrical components, a used one in good condition is just as effective as a new one. Here’s what to check before buying:
- Inspect for Cracks and Brittleness: Bend the plastic slightly. It should be flexible. If it's brittle and cracks easily, it has been degraded by sun and heat and should be avoided.
- Check All Mounting Holes: This is the most critical inspection point. Ensure all the holes for clips and screws are intact and not torn or ripped out. A liner with damaged mounting points will not install securely and will eventually come loose.
- Look for Warping or Bends: Check that the liner has its original, curved shape. Liners that have been stored improperly or folded for shipping (a common issue with cheap aftermarket parts) may be difficult to install and may not fit snugly.
- Verify the Part Number: If possible, check for the original part number molded into the plastic to ensure you are getting the correct part for your vehicle's side (driver or passenger).
Pro Tip: Choosing a used OEM liner over a new, cheap aftermarket one is often a wise decision. Used OEM parts are guaranteed to have the correct shape and use the original, durable plastic material, ensuring a perfect fit that cheap aftermarket parts sometimes fail to deliver.
Cost of Fender Liner Replacement (2011-2014 Edge & 2011-2015 MKX)
Replacing a fender liner is an inexpensive repair. The part itself is not costly, and labor is minimal.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Fender Liner (per side) | $60 - $90 |
| New Aftermarket Fender Liner (per side) | $30 - $65 |
| Used OEM Fender Liner (per side) | $25 - $50 |
| Shop Labor Cost | $75 - $150 |
| DIY Replacement | Cost of the part only |
Replacement Overview
Replacing the fender liner is a straightforward job that most DIY mechanics can complete in under an hour per side. The process generally involves simple hand tools.
- Safely jack up the front of the vehicle and support it on a jack stand.
- Remove the front wheel for easier access.
- Locate and remove the screws and plastic push-clips that hold the old liner in place. These are typically found along the edge of the fender lip and inside the wheel well.
- Pull the old, damaged liner out.
- Maneuver the new liner into position, ensuring it tucks behind the fender lip correctly.
- Install the new clips and screws to secure the liner.
- Reinstall the wheel and lower the vehicle.
Frequently Asked Questions
Can I drive with a broken or missing fender liner?
Yes, you can drive the vehicle, but it is not recommended for a long period. A missing liner exposes your engine, wiring, and chassis to water, salt, and debris, which will accelerate rust and could lead to expensive electrical or mechanical problems down the road. It's best to replace it as soon as possible.
Is there a difference between the driver and passenger side liner?
Yes, fender liners are side-specific. They are mirror images of each other and cannot be interchanged. Be sure to order the correct part for the side you are replacing (e.g., Left/Driver or Right/Passenger).
Do I need any special tools for replacement?
No special tools are required. A basic socket set, a screwdriver, and possibly a trim clip removal tool are all that's typically needed. The job can be done with common hand tools.
Why is my new aftermarket liner folded in the box?
Many aftermarket companies fold fender liners to reduce the size of the shipping box and save on costs. While this is common, it can sometimes cause creases or make installation difficult. You can let the part sit in the sun for a few hours to help it return to its original shape before installation.
Technical Specifications
OEM Part Numbers: CT4Z16102B (Front Right / Passenger) CT4Z16103B (Front Left / Driver) BT4Z16138A (Superseded Radiator Support Part - Do Not Use for Liner) CT4Z16138A (Radiator Support Part - Do Not Use for Liner)
Material: Thermoplastic Placement: Front Wheel Well (Driver and Passenger specific)
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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.
- Ford Edge:
- Lincoln MKX: