The 3 Best 921 LED Bulbs


In this article,we will be recommending the best 921 LED backup bulbs.

These bulbs were thoroughly evaluated by our tried and tested methods, before being recommended to you.As such, they are the brightest, longest lasting, and most efficient bulbs in this category.

Auxito makes our favourite 921 LED backup bulbs, offering bright and powerful lighting, built in CANbus decoders, and a cooler colour temperature that is both effective for adding visibility and also aesthetically pleasing.

Having tested a wide variety of bulbs over the past decade, we know all the ins and outs of automotive lighting and can help you find the best bulb for your needs.

Keep reading for more information about the best 921 LED backup bulbs.


Overall Best
AUXITO 921 LED Backup Light Bulbs
Pros
  • 300% brighter than stock
  • 15 of the latest high powered LED chips used in each bulb
  • Longer throw than stock bulbs
  • More visible to pedestrians and other drivers
  • Cool white 6000k color profile
  • Well calibrated beam
  • Built in IC driver
  • No CANbus errors
  • Lower power consumption than stock bulbs
  • No flickering or flashing
Cons
  • Often sold out due to popular demand

Best Budget
Aucan RV 921 Backup LED Bulbs
Pros
  • 250% brighter than stock
  • 500 lumens
  • 6500k colour profile
  • Cool colour profile is easier to spot in rain or fog
  • Powerful throw
  • Enhanced visibility
  • Superior illumination even at lower power levels
  • Uniform beam pattern
  • Efficient power consumption
  • Most well calibrated beam we have seen
  • Budget friendly option
Cons
  • Slight flashing under with prolonged use

Premium Choice
LASFIT 921 LED Backup Bulbs
Pros
  • Brightest light output
  • 1500 lumens
  • Ideal for manoeuvring car in darker environments
  • 6000k colour profile
  • More noticeable in low visibility conditions
  • Adds a really cool look to the car
  • Built in CANbus
  • Aluminium build is more durable
  • Efficient power consumption
  • No flickering or flashing
  • Comes with manufacturer warranty
Cons
  • A pure white 6500k colour profile was sorely missed

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AUXITO 921 LED Backup Light Bulbs

Overall Best

Auxito is one of our most recommended bulb manufacturers, and it’s easy to see why. Their 921 LED bulb is one of the brightest and most efficient bulbs for use in reversing lights and far outlasts the competition.

Brightness is this bulb’s strong suit. At over 300% brighter and more powerful than the stock benchmark, these bulbs offer superior illumination and visibility for drivers behind you.

This is thanks to the 15 pieces of high power 2835-SMD LEDs in each bulb. The longer throw allows drivers and pedestrians to notice your car from further away, while also adding a bit of flair to your car’s rear end.

The crisp and powerful lighting is complemented by a cool 6000k colour profile. While stock reversing bulbs are a dull yellow or orange, these whiter bulbs provide even illumination and a more brilliant light output that makes your vehicle easier to notice.

Outfitted with a built-in intelligent IC driver, these LEDs are more efficient than your stock bulbs and also eliminate any errors in operation. We did not have to put up with any flickering or flashing and the beam pattern was precisely calibrated.

Power consumption is also intelligently regulated by the IC driver which keeps the whole setup running smoothly. Power efficiency is up compared to stock bulbs which might as well be from the dark ages compared to these LEDs!

Pros
  • 300% brighter than stock
  • 15 of the latest high powered LED chips used in each bulb
  • Longer throw than stock bulbs
  • More visible to pedestrians and other drivers
  • Cool white 6000k color profile
  • Well calibrated beam
  • Built in IC driver
  • No CANbus errors
  • Lower power consumption than stock bulbs
  • No flickering or flashing
Cons
  • Often sold out due to popular demand

Aucan RV 921 Backup LED Bulbs

Best Budget

For the budget conscious, Yorkim makes a stellar 7440 LED bulb that has bright output, powerful illumination, and outstanding longevity.

Starting off with the brightness, this bulb uses 33 5730 SMD chips that generate a brilliant 1650 lumen beam of light for better illumination. For exterior purposes, the light beam is plenty bright and visible for other drivers.

As for the color temperature, it is a crisp and clear 6000k that looks awesome and adds a lot of safety for nighttime driving. If you’re looking to upgrade your LEDs to a cooler, modern design, these are the ones to have.

These LEDs are non-polarity bulbs, designed to be installed quickly and easily. That said, we did require an additional load resistor to prevent hyper flashing when used in turn signals.

On the power consumption side of things, these budget LEDs are even more efficient than premium options. They draw less power while delivering over 400% brighter light output.

The aluminum housing is a welcome addition as is the projection lens which emits focused and well-calibrated light.

Finally, these bulbs have an impressive lifespan of around 50,000 hours. Thanks to constant current IC components and intelligent power consumption, this bulb will outlast any stock alternative.

Pros
  • 250% brighter than stock
  • 500 lumens
  • 6500k colour profile
  • Cool colour profile is easier to spot in rain or fog
  • Powerful throw
  • Enhanced visibility
  • Superior illumination even at lower power levels
  • Uniform beam pattern
  • Efficient power consumption
  • Most well calibrated beam we have seen
  • Budget friendly option
Cons
  • Slight flashing under with prolonged use

LASFIT 921 LED Backup Bulbs

Premium Choice

If you want the absolute best of the best 7440 LED bulbs and have some cash to spare, the Alla Lighting 7440 LED bulbs offer the brightest output and the most durable build of any 7440 bulbs.

At an unprecedented 2800 lumens of brightness, the Alla Lighting LED bulbs far outshine all of their competitors. The light output is crisp and clear with exceptional calibration that produces a focused and precise beam.

This LED bulb uses 33 5730 LED chips, facilitating better illumination that is more visible and covers a wider area.

Materials are also premium, such as 6063 aviation aluminum for the construction and a built-in intelligent IC driver that governs cooling and power consumption.

Speaking of power consumption, it is efficient and lower compared to other 7440 bulbs. IP67 water and dust resistance rating ensures protection from environmental damage.

Probably our favorite feature of this bulb is its versatility. It can be used in turn signals, backup lights, daytime running lights, brake lights, even side marker lights, and interior lights.

Another outstanding feature of this bulb is the one-year warranty it comes with, helping the driver use the bulbs more confidently knowing that they will be replaced in the event of any faults.

Pros
  • Brightest light output
  • 1500 lumens
  • Ideal for manoeuvring car in darker environments
  • 6000k colour profile
  • More noticeable in low visibility conditions
  • Adds a really cool look to the car
  • Built in CANbus
  • Aluminium build is more durable
  • Efficient power consumption
  • No flickering or flashing
  • Comes with manufacturer warranty
Cons
  • A pure white 6500k colour profile was sorely missed


Check out our most popular pages to find the best headlight bulbs.

Check out the brightest headlight bulbs as well.

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Author

Richard Nickleson is the author and owner behind Headlight Reviews. He first started the site as a hobby to share his insights on car parts and specifically headlight bulbs, but it soon ballooned and now he writes on all topics surrounding headlights bulbs. If you've got a bulb question, contact Richard here.

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