2022-2024 Acura MDX Fender Liner: Avoiding the Standard vs. Type S Fitment Trap
This guide covers the critical part number differences between standard and Type S models to ensure you buy the right fender liner for your 2022-2024 Acura MDX.
- The most critical factor is vehicle trim: fender liners for the standard 3.5L MDX and the 3.0L Type S are NOT interchangeable.
- Always verify OEM part numbers before buying. 'TYA' parts are for standard models, while 'TYB' parts are for the Type S.
- When buying a used liner, the integrity of the mounting holes is more important than minor surface scuffs.
- Driving with a damaged liner exposes engine and electrical components to debris and moisture, risking more expensive repairs down the line.
Symptoms of a Bad or Missing Fender Liner
Failure is almost always due to physical damage. Since the part is purely mechanical, there are no associated trouble codes or warning lights. Symptoms are typically audible or visible.
- Scraping or Flapping Noises: The most common symptom is a scraping, rubbing, or flapping sound coming from the wheel well, especially while driving at higher speeds or turning. 🎬 Watch: How to diagnose front end noises and scraping sounds. This indicates the liner is loose and making contact with the tire or the road.
- Visible Damage: Obvious signs include cracks, holes, or large chunks of the plastic missing. This often happens after hitting road debris, a deep pothole, or a minor collision.
- Dragging: In severe cases, a portion of the fender liner may break loose and drag on the ground. This is a clear sign that mounting points have failed.
- Debris in Engine Bay: If you notice an unusual accumulation of dirt, mud, or water in the engine compartment, it could be a sign that a damaged or missing fender liner is no longer doing its job.
Warning: A loose fender liner can be dangerous. If it fully detaches at high speed, it can become a road hazard for other drivers. If it makes contact with the tire, it could cause tire damage.
Known Issues, TSBs, and Recalls
As of early 2026, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from Acura for fender liner failures on the 2022-2024 MDX. All reported issues are related to individual cases of physical damage from road hazards or impact. While there are active recalls for this MDX generation, they pertain to other components like seat weight sensors and fuel injection software, not the body panels.
Crucial Compatibility: Standard vs. Type S Models
The single most important factor when buying a replacement fender liner for a 2022-2024 Acura MDX is the trim level. The liners for the standard 3.5L engine models and the high-performance 3.0L Type S models are different and are not interchangeable.
Online listings for OEM parts explicitly state "Without type s" for the standard liners. Using the wrong part will result in improper fitment, as the shape and mounting points are different.
| Vehicle Model | Engine | Part Name | OEM Part Number |
|---|---|---|---|
| MDX (Base, Tech, A-Spec) | 3.5L V6 | Right / Passenger Side Fender Liner | 74101-TYA-A01 (supersedes 74101-TYA-A00) |
| MDX (Base, Tech, A-Spec) | 3.5L V6 | Left / Driver Side Fender Liner | 74151-TYA-A01 (supersedes 74151-TYA-A00) |
| MDX Type S | 3.0L Turbo V6 | Right / Passenger Side Fender Liner | 74101-TYB-A21 |
| MDX Type S | 3.0L Turbo V6 | Left / Driver Side Fender Liner | 74151-TYB-A21 |
| MDX Type S Advance | 3.0L Turbo V6 | Right / Passenger Side Fender Liner | 74101-TYB-A50 |
Pro Tip: The part number series gives a clue. Parts starting with "TYA" are for the standard models, while parts starting with "TYB" are for the Type S. Always verify the part number against your vehicle's VIN with the seller before purchasing.
Buying a Used Fender Liner: What to Inspect
A used OEM fender liner is often a better choice than a cheap, new aftermarket part due to superior fitment and material quality. However, inspect the used part carefully before buying.
- Check All Mounting Points: This is the most critical inspection. Look at every hole where a clip or screw would go. Ensure the plastic isn't cracked, torn, or excessively worn around these holes. A liner with damaged mounting points will not install securely and will eventually come loose.
- Look for Cracks and Tears: Flex the part slightly and inspect it under good light. Look for any cracks, especially ones starting from the edges. A small crack can quickly grow once subjected to wind and vibration on the vehicle.
- Inspect for Heat Damage or Brittleness: Check the areas that would be near the engine or exhaust components. Look for any signs of melting, warping, or plastic that appears overly dry and brittle.
- Verify the Part Number: If possible, find the part number stamped on the back of the liner and match it to the numbers in the table above to confirm you have the correct version for your MDX trim.
OEM vs. Aftermarket Quality
While aftermarket fender liners are available and often cheaper, they can be a gamble. Forum discussions and mechanic feedback often point out that aftermarket liners can be made of a thinner, more flimsy plastic. This can lead to fitment issues where holes don't line up perfectly, requiring modification to install. A genuine OEM part, whether new or used, is molded for a perfect fit. If you do choose aftermarket, look for parts that are "CAPA Certified," as they are tested to meet standards closer to OEM for fit and quality.
Cost Comparison
Fender liners are not painted, so you do not need to budget for color matching. The cost is for the part and labor only.
🎬 Watch: How to remove the front bumper for better access.| Part Type | Estimated Cost | Notes |
|---|---|---|
| New OEM | $130 - $190 | Price from an Acura dealership or online OEM distributor. |
| New Aftermarket | $40 - $110 | Lower end is basic quality; higher end is for CAPA certified parts. |
| Used OEM | $50 - $100 | Price from a local or online auto recycler. Dependent on condition. |
| Shop Labor | $90 - $180 | Most shops will charge for 0.75 to 1.5 hours of labor. |
Replacement Overview
Replacing a fender liner is a straightforward job that is feasible for a DIY mechanic. The basic steps involve safely lifting and supporting the vehicle, removing the wheel on the affected side, and then removing a series of plastic clips and small screws that hold the liner in place. A trim removal tool is highly recommended to avoid breaking the plastic clips, many of which you may want to replace with new ones for a secure fit.
🎬 See this walkthrough for a step-by-step fender liner replacement.Frequently Asked Questions (FAQ)
Do I need to paint a replacement fender liner?
No. Fender liners for the 2022-2024 Acura MDX are made of textured black plastic and are not painted. You do not need to worry about paint codes or color matching for this specific part.
Will a fender liner from a standard MDX fit my Type S?
No. The part numbers and shapes are different. You must buy the specific fender liner for the Type S model to ensure proper fitment.
Can I drive with a broken or missing fender liner?
You can, but it is not recommended for long. Driving without a liner exposes your engine bay, wiring, and suspension components to water, salt, and debris, which can cause rust and damage over time. A loose, dragging liner can also be a safety hazard.
What tools do I need to replace a fender liner?
Basic hand tools are usually sufficient. You will need a jack and jack stands, a lug wrench to remove the wheel, a Phillips head screwdriver, and a set of trim removal tools to safely remove the plastic clips without breaking them.
Is the left (driver) side liner the same as the right (passenger) side?
No, they are not interchangeable. They are mirror images of each other. You must order the specific side you need to replace.
Helpful Videos
Technical Specifications
OEM Part Numbers: 74101-TYA-A00 74101-TYA-A01 74151-TYA-A00 74151-TYA-A01 74101-TYB-A21 74151-TYB-A21 74101-TYB-A50
Material: Typically heat-formed PET plastic. Unpainted textured black finish.
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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.
- Acura MDX:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Bad or Missing Fender Liner
- Known Issues, TSBs, and Recalls
- Crucial Compatibility: Standard vs. Type S Models
- Buying a Used Fender Liner: What to Inspect
- OEM vs. Aftermarket Quality
- Cost Comparison
- Replacement Overview
- Frequently Asked Questions (FAQ)
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