Why this happens
The corrosion issue stems from a breach in the faceplate's protective coating during assembly or lens swapping. The FLEX Era 4 utilizes an aluminum alloy faceplate finished with a protective powder coating. When the four securing screws are driven in at an angle or over-torqued, the mechanical friction and shear force of the screw heads scrape away the coating around the mounting holes.
Once this coating is compromised, the raw aluminum underneath is exposed to the elements. Off-road driving introduces moisture, mud, and highly corrosive road salts directly to these exposed points. The trapped moisture triggers localized oxidation, causing the protective coating to bubble and peel away as the corrosion spreads beneath the surface.
The fix
If your face plate has already started corroding, we offer a direct replacement:
FLEX ERA® 4 Replacement Outer Black Face Plate Replacement (12-00010-01)
You can replace just the corroded face plate rather than the whole light or lens assembly.
Prevention guidance for future lens swaps
When reinstalling the face plate:
- Start each screw by hand first to make sure it's threading straight, not cross-threaded or angled
- Snug the screws evenly (a bit at a time, in sequence) rather than fully tightening one at a time
- Avoid over-torquing, the face plate only needs to be snug enough to sandwich the lens, not cranked down
- Use a properly sized screwdriver/bit to avoid cam-out, which is a common cause of coating damage
For further questions please contact us and one of our Support Agents will gladly be of service.
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