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W21W 7440 LED Reverse Lights Backup Bulbs Replacement Upgrade 12V 21W

W21W 7440 LED Reverse Lights Backup Bulbs Replacement Upgrade 12V 21W

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Item #: 16899034

$39.99$29.990% off
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About this item

CAN-Bus brightest T20 baes W21W 7440 LED reverse lights backup bulbs 6000K xenon white replacement upgrade OEM 12V 21W incandescent back-up reverse lights bulbs for automotive cars, trucks, motorcycles for visions, safety and luxury improvement.

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Polarity Sensitive

CK Compatible ?

Strobe ?

Optional Colors

Performance brightest T20 wedge W21W 7440 LED reverse lights backup bulbs replacement from Alla Lighting upgrade OEM 12V 21W incandescent or damaged brake lights, back up reverse lights, 3rd brake lights(center high-mounted stop lamps) bulbs for automotive cars, trucks, motorcycles for visions, safety and luxury improvement.

For most vehicles, just plug and play, easy installation. Yet some vehicles, extra LED resistors or LED flashers maybe required to avoid the signal hyper flash or error code.

W21W 7440 LED Reverse Lights Backup Bulb vs Incandescent Lamp

W21W 7440 LED Reverse Lights Backup Bulb vs 21W Incandescent Lamp 12V
  • Features

  • Packages: Includes one pair (2pcs) CSP SMD W21W/7440 LED reverse lights bulbs, 6000K xenon white replacement.
  • LED Chips: Each W21W 7440 LED reverse light bulb is equipped with 9pcs high power and high illumination CSP SMD chipsets.
  • Easy Fitment: T20 wedge bulb fitment, for most vehicles, just direct fitment. Yet for some European or newest vehicles, extra LED resistors maybe required to avoid the error code or flickering.
  • Light Output: Each W21W 7440 LED reverse lights bulb light up to 1500 lumen.
  • Color options: 6000K xenon white
  • Cross reference number: 992, 7440, 7440LL, 7440ST, 7441,W21W, etc.
  • Applications: Used for replacing halogen/incandescent back-up reverse light for better vision and safer driving.
  • Lifespan: More than 30,000hrs in 25°C ambient. 
  • Specifications

Raw Lumens


Optional Colors

6000K Xenon White

Base Type


CAN Bus ?




Beam Angle

320 degree

Current Draw

1.0A (1000mA)

Power Consumption


Operating Voltage

9V~30 VDC


Polarity Sensitive




Standard & CK Compatible ?




Life Span

30, 000 hours


12 Months

LED Chip Type

High power CSP SMD

LED Quantity

9 pcs LEDS

Operating Temperature

-20~+40 °C (-4~+104 °F)

Cross Reference Number

992, 7440, 7441, W21W

  • Warranty

Alla Lighting warrants that its LED Conversion Kits will be free from defects in material and workmanship for TWO years from the date of purchase by the Original Purchaser. This warranty does not apply to any products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, act of nature, motor vehicle accidents or alterations.

For more details, please click here.

  • Package


  • One pair (2 pieces) CSP-SMD W21W/7440 LED reverse lights bulbs
  • Well packed in solid box
  • Shipping

Domestic (U.S.) Shipping

All domestic (U.S.) orders ship with USPS, and all orders will be shipped out within 24 working hours (except out of stock items), Free standard shipping.

All Orders will be shipped out within 24 working hours.

International Orders maybe charged customs clearance.

More details, please click here.

  • Vehicle Fitment

Check whether this bulb can fit your vehicle or not, check Bulb Size Guide for more details, please input your vehicle's Make, Year, Model, Qualifier, Applications to fast locate products options.

  • Accessories

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Customer Reviews

Based on 45 reviews
Ryan W. (United States)
Vehicle's information: 2016 Honda Fit EX-L
2016 Honda Fit Fog, Reverse, and Headlights

Great pre and post sales support. Installation was a bit tricky for me. But after reviewing some online content it went in pretty good.

Ian B. (United States)
Vehicle's information: 2018 ford f250
Reverse lights

Easy installation. A lot brighter than stock lights.

Brian N. (United States)
Vehicle's information: 2017 Ford F-250 Super Duty Super Crew
Super Bright Reverse Lamps

The older I get, and the more tinted my truck windows become, the greater the need for additional reverse light. The lamps really do the job with much more white light that the factory lamps.

carlos v.
Worth the buy!

Extremely bright! Easy to install. Worth every penny.

Bright and worth it.

Very bright! As you can see from the picture posted. The bottom is my stock bulbs and the top is these bulbs. Literally looks like headlights.

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Combine Discount

Offer Details: 15% Off for any 3 items as below with Coupon Code: Bestled89

Best Selling

What are CAN Bus LED Bulbs?

when we say CAN Bus LED bulbs, they are the easy plug-and- play LED lights bulbs which are made specifically for the vehicles built-in CAN-Bus system. These bulbs work with your vehicle's advanced computer system, so when your vehicle's computer reads them, they respond back correctly.

To see if your vehicle operates with a CAN Bus system, simply remove the bulb you're looking to replace, start your vehicle, and if you have a "Bulb Out" message on your dash you have a CAN Bus system.

How to Tell 7443/3157 Standard and CK Socket Difference?

7440 7443 Strobe LED Brake/Reverse Lights Bulbs Theory

7443 Strobe led brake light bulbs will strobe 4 times on and off at the beginning braking mode for much easier notified and safer stop, and then keep stable solid light (Legal blinking times) to avoid any automotive cars, trucks, SUVs, RVs rear-end collision.