DERMOKA LED dually bed fender side markers, Smoked Lens (White LED) — Set of 4, DOT/SAE Certified, Plug-and-Play

DERMOKA's LED dually bed fender side marker lights are a direct, plug-and-play LED replacement for the factory dually side markers on 1999–2010 Ford F250/F350/F450/F550 Super Duty trucks.

These smoked-lens LED side markers upgrade the factory incandescent bulbs with bright white LEDs in a housing designed to match the original fitment. They are DOT & SAE certified, built with weather-sealed ABS housing and durable polycarbonate lenses, and sold as a set of four to replace the dually bed fender markers on compatible Ford trucks. The lights are engineered to be five times brighter than standard OEM bulbs and install without wiring changes, preserving the truck’s original mounting and connector layout.

Will these dually side markers fit my 1999–2010 Ford Super Duty?

These markers are made specifically for Ford Super Duty dually trucks with existing side marker cutouts from 1999 through 2010. If your truck originally had dually bed fender side markers, these are manufactured to match that footprint and connector type.

• Compatible models: Ford F350, F450, F550 (dually variants).
• Years covered: 1999–2010 factory-style dually markers.
• No housing modification required when replacing original markers.
• Sold as a set of four to replace both sides and front/rear positions as needed.

How much brighter and durable are these LEDs compared with stock bulbs?

These units use high-power LED chips engineered to produce markedly more light than standard incandescent bulbs—about five times the brightness—improving visibility during dusk, dawn, and poor weather. The construction focuses on durability to handle road conditions and exposure to the elements without frequent replacement.

• LED output: significantly higher lumen output vs. OEM incandescent bulbs.
• Longevity: rated life over 55,000 hours under normal conditions.
• Durability: shockproof, dustproof, and waterproof sealing.
• Certifications: DOT & SAE approved for road use where those standards apply.

Is installation difficult and will it affect my truck’s wiring?

Installation is designed to be straightforward and non-destructive: the lights are plug-and-play replacements that use the existing wiring harness and mounting points. No splicing, relays, or special tools are typically required, so installation can usually be completed in under 15 minutes per side.

• Mounting: uses original screw and clip locations for a factory fit.
• Wiring: compatible plug connects to the factory marker socket, no rewiring.
• Time: most installs take 15 minutes or less when replacing OEM markers.
• Reversibility: factory parts can be reinstalled without damage if needed.

What does the package include and is there support or warranty?

The product ships as a complete set of four dually side marker lights with smoked lenses and includes a 12-month limited warranty. Customer support is available for fitment questions or post-purchase assistance.

• Package contents: 4 x DERMOKA dually side marker lights (smoked, white LED).
• Warranty: 12 months from date of purchase for manufacturing defects.
• Support: contact options for fitment or installation guidance.
• Return/replace policy: follow seller instructions for warranty claims.

Who is this for: Ford dually owners who want a direct-fit LED upgrade to improve side marker brightness and longevity without modifying the truck’s wiring or body. These lights suit owners restoring or refreshing 1999–2010 Super Duty trucks, fleet managers seeking durable replacements, and drivers who prefer a smoked aesthetic combined with DOT- and SAE-compliant lighting performance.