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Underground Lighting  |  SKU: F150-921

Backup LED Replacement Bulbs for 2009–2014 Ford F-150 | 921 / T15 White, 6000K White Plug & Play | 500LM Output (PAIR)

$39.99

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Reverse lights too dim at night? 

  • Higher output than halogen for clearer visibility
  • Stable LED design prevents flicker and failure
  • Full metal heatsinking improves durability
  • 921/T15 plug & play, no wiring required
  • Tested 500LM output with 2-year warranty
  • Japanese component, Made in the USA

  • -  Direct Fit For:

    • 2009 Ford F-150
    • 2010 Ford F-150
    • 2011 Ford F-150
    • 2012 Ford F-150
    • 2013 Ford F-150
    • 2014 Ford F-150


  • - Factory reverse bulbs rely on filament-based lighting with limited output spread. Low-intensity illumination reduces rear visibility, making obstacles and edges harder to detect during nighttime reversing.

The measured 500-lumen output delivers higher usable light, improving rear clarity and visibility range. This allows faster visual recognition and more precise manoeuvring in low-light environments.

  • - Multi-directional LED layout with 12× 3030 chips and a top-mounted projector lens distributes light evenly while concentrating output behind the vehicle, improving both spread and focused illumination.

  • - Most LED products use calculated brightness figures. Tested lumen output ensures real-world accuracy, providing consistent and predictable performance compared to unreliable competitors.

  • - Heat buildup is a primary failure point in LEDs. Full aluminium housing combined with an upgraded circuit board improves heat transfer, maintaining stable output and preventing performance degradation.

  • - 921/T15 plug-and-play base with non-polar configuration installs directly into factory sockets. No modifications required, ensuring quick setup and immediate functionality.

  • Enhanced circuit protection and thermal stability reduce flickering and electrical stress, delivering consistent performance and extended lifespan under regular driving conditions.

WHAT'S INCLUDED

BULBS :
2X 921 LED Bulbs
WARRANTY :
Includes a 2-Year Manufacturer Warranty covering defects under normal use.

PRODUCT INFORMATION

Function - Reverse / Backup Light

LED Chips - 12× 3030 SMD + 5 High-Power Top Chip

Beam Design - 4-Side Illumination + Projector Lens Top

Housing - Full Metal Heatsink

Electrical Design - Non-polar, CK Compatible, Error-Free

Installation - Plug & Play

Quantity - Pack of 2

TECH SPECS

INTENSITY :
500 Lumens
CIRCUITS :
9V-12V
This product has a Includes a 2-Year Manufacturer Warranty covering defects under normal use.

Yes. 500-lumen tested output exceeds standard incandescent brightness, improving rear visibility and reversing safety.

No. CANBUS ballast stabilises electrical load, preventing flickering, warning lights, and compatibility issues in most vehicles.

Yes. T15/921 bulbs support multiple uses, including interior, parking, DRL, and third brake light applications.

Projector lens focuses light backward, while side LEDs improve spread, delivering better overall illumination coverage.

While the exact process will be different depending on the vehicle model, changing a reverse light follows a standard procedure:

  1. Access your taillight assembly, typically secured by screws or push rivets.
  2. Once removed, you can reach the reverse light socket. Carefully disconnect the electrical connector by pressing the release clips and pulling it free. While working, place the entire assembly on a clean, flat surface.
  3. Install the new light, ensuring proper connection and orientation.

If you're unsure about any step in the process, our lighting professionals at Underground Lighting are here to help – just reach out by phone, email, or chat for expert guidance.

COMPATIBILITY

CROSS-COMPATIBILITY :
T8, T12,T15, 194, 175, 168, #555, 2886X, 194R, 161B, 3652, 193, 658, 2827, 194NA, 161, 558, 168NA, 2825, 194G, 160, 168A, 192, 2821, 194B, 158, W5WB, 579, 168, 2825ST, 168ST, 3652LL, 579LL, 2825LL, 168NALL, 2825L, 2821LL, 168LL, 194ST, 161LL, 194NALL, 2827LL, 158LL, 194LL, 906NA, 917, 906, 916NA, 904NA, 922, 916, 904, 921, 912, 920, 921K, 916LL, 921LL, 912LL, 920LL, 917LL, 906LL, 916NALL, 904LL, 921ST
FITMENTS :
Reverse Light for 2009 - 2014 Ford F 150

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