2016-2021 McLaren 570S Fender Support Bracket: Alignment, Damage, and Replacement
A detailed look at the McLaren 570S fender support bracket, focusing on collision damage, panel alignment issues, and what to inspect when purchasing a used part.
- Failure of this bracket is almost always caused by collision damage, not by wear and tear.
- The most common symptoms are a misaligned fender, uneven panel gaps, and rattling noises from the front corner of the car.
- When buying a used bracket, it is critical to inspect it for any bends, twists, or hairline cracks to ensure proper fender alignment.
- Replacement is a complex job for a professional body shop due to the delicate nature of McLaren body panels and the need for precise alignment.
Symptoms of a Damaged Fender Support Bracket
Unlike parts that wear out over time, a fender support bracket typically fails due to physical impact, such as a collision or hitting a large road obstacle. The symptoms are almost always visual or audible.
- Misaligned Fender and Poor Panel Gaps: The most obvious sign of a damaged or bent bracket is a fender that doesn't line up with the hood, front bumper, or door. You may notice the gap is wider at the top than the bottom, or the fender may appear to sag or stick out. Some McLaren owners note that poor panel gaps can be a quality control issue from the factory, but gaps that change over time or appear after an impact point to component damage.
- Rattling or Clunking Noises: A broken or loose bracket will allow the fender to vibrate against the chassis, especially when driving over rough surfaces. This can produce a distinct rattling, clunking, or grinding sound from the front corner of the car.
- Visible Cracks or Bends: In some cases, you may be able to see a crack or bend in the bracket itself, especially after a minor impact where the fender was pushed back. This is a clear indication of failure.
Known Issues, TSBs, and Recalls
There are no specific recalls, Technical Service Bulletins (TSBs), or common failure patterns for the fender support bracket itself on the McLaren 570S. This part is a simple, robust piece of metal or composite material designed to last the life of the vehicle. Replacement is almost exclusively required as a result of accident damage.
While the bracket itself is not a known issue, several recalls have been issued for the 2016-2021 McLaren 570S for unrelated issues, including passenger airbag inflators and brake banjo bolts. It is always recommended to check a vehicle's VIN with the manufacturer or on the NHTSA website for any open recalls.
Pro Tip: During a pre-purchase inspection of a used 570S, pay close attention to all panel gaps. While some variation can be normal for these hand-assembled cars, significant misalignment could indicate past accident damage that may involve the fender brackets and underlying support structures.
Buying a Used 570S Fender Support Bracket: What to Check
Since new OEM McLaren parts can be extremely expensive, a used OEM bracket from a reputable recycler is an excellent way to save money on a collision repair. Because these parts don't wear out, a used bracket in good condition is functionally identical to a new one. Here’s what to inspect:
- Check for Bends and Twists: This is the most critical inspection. Lay the bracket on a perfectly flat surface. It should sit flush without rocking. Compare it to photos of a new part (using the part number) to identify any subtle bends or twists that could make alignment impossible.
- Inspect Mounting Holes: The mounting holes should be perfectly round. Any elongation, stress marks, or cracking around the holes indicates the bracket was under extreme force during an accident and should be rejected.
- Look for Hairline Cracks: Carefully examine all welds and tight-radius bends for hairline cracks. These cracks can propagate over time due to vibration, leading to eventual failure.
- Verify the Part Number: Several different brackets are used in the front assembly of a 570S. Ensure the part number (e.g., 11A1471SP, 13A4962CP, 13A1472CP) matches the exact part you are replacing. Different brackets are used for left, right, upper, and lower positions.
Cost of Replacement: New vs. Used
The cost of parts and labor for a McLaren can be significant. Sourcing a used OEM part can provide substantial savings.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Fender Support Bracket | $100 - $400+ (Varies by specific bracket) |
| Used OEM Fender Support Bracket | $50 - $200 |
| New Aftermarket | Not commonly available |
| Shop Labor (Body Shop) | $500 - $1,500+ (Includes fender removal, fitting, and alignment) |
Note: Labor costs are highly variable and depend on the extent of associated collision damage. This estimate is for a straightforward bracket replacement requiring fender removal and re-installation.
Installation and Replacement
Difficulty: 4 out of 5
Replacing a fender support bracket on a McLaren 570S is a job for an experienced technician or a professional body shop specializing in exotic vehicles. It is not recommended for a typical DIY mechanic.
The process involves:
- Careful removal of the front wheel and fender liner.
- Disconnecting any wiring for side markers or sensors.
- Precisely removing the front fender panel. This is a delicate operation, as the carbon fiber or composite panels can be easily damaged.
- Unbolting the old bracket and installing the new one.
- Re-installing the fender and meticulously adjusting its position to achieve perfect panel gaps and alignment. This is a time-consuming process of trial and error.
Warning: Improper alignment not only looks bad but can also affect the vehicle's aerodynamics. Achieving factory-perfect panel gaps requires skill and patience.
Frequently Asked Questions (FAQ)
Can I drive my McLaren 570S with a broken fender support bracket?
You can, but it is not recommended. A loose or damaged fender can vibrate, causing further damage to the paint and surrounding panels. In a worst-case scenario, the fender could detach from the vehicle at speed, creating a serious safety hazard for you and other drivers.
Why are my fender panel gaps uneven if I haven't been in an accident?
While major misalignments usually point to damage, some McLaren owners report that minor inconsistencies in panel gaps can be present from the factory due to the hand-built nature of the cars. However, if the gap is significant or has changed over time, it's best to have the mounting hardware and brackets inspected.
Is an aftermarket fender support bracket a good option?
Aftermarket structural parts for the McLaren 570S are not commonly available. Given the importance of perfect fitment for aerodynamics and safety, it is strongly recommended to use either a new OEM part or a verified, undamaged used OEM part.
Does replacing a fender bracket require a wheel alignment?
While replacing the bracket itself does not directly alter suspension geometry, the work is often done as part of a larger collision repair that would necessitate a four-wheel alignment. If the damage was severe enough to break a fender bracket, it's wise to have the suspension alignment checked to ensure no other components were bent.
Technical Specifications
OEM Part Numbers: 11A1471SP 13A1472CP 13A4962CP 13A1502CP.01 13A4703CP
Material and dimensions vary by specific part number and location (left/right, upper/lower). Primarily made of metal or high-strength composite.
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.
- McLaren 570S: