AUXITO 912 921 LED Bulb for Backup Light Reverse Lights High Power 2835 15-SMD Chipsets Error Free T15 906 922 W16W Bulbs, 6000K White, Automotive Light Bulbs (Upgraded, Pack of 2)

Out of the 10 different built-in resistor bulbs I've tried, the dual function Auxito bulb with 2 chips on each side is considerably better than everything else. This single function bulb would be my 2nd choice and I'll give some quick notes on everything I tried and how Auxito could make these even better and I really hope they do because some of us would greatly benefit from even brighter bulbs. Even though my front bulb was a 7444na it's a single function blinker only. The rear WY21W is also single function. You can use single or dual function bulbs in both front and rear in this car. I give 4 stars for both Auxito bulbs even though the single function one is more 3.5 stars. The dual function one on this car has enough intensity to where it fills the reflectors to the point where it makes the housing lens look like a solid light and no other bulb even came close to that. The single function bulb gives off sufficient light output you just lose the intensity from only having one chip on each side to hit the reflectors. There are a few ways these could be improved. Having a chip on the end would help people like me for where I drive. I have a lot of turns off roads with corners and hills. Having a chip on the end would help the flash be seen around the corner or over a hill before the person behind you physically sees your blinker. If that's not an option on this bulb, there are 2 other options that might help. Either put 2 chips on each side of the single function bulb or make the dual function amber bulb to where all the chips light up for the blinker function. Any of those options would be perfect for some of us. I'll jot down some notes from other bulbs I tried. Zonbeam had a good idea but would need 2 chips on each side to fully light up the reflectors. Their bulb was heavy and didn't fit snug in the front. The dual function Zonbeam was fine in the rear w21w socket but the 7440 single function one had a nub I would have had to grind off to fit the w21w socket. That bulb projected the darkest light onto the garage door so I'm guessing it would have shined the farthest but these Auxito dual function bulbs are brighter to look at. Oxilam bulbs worked but I could feel the fan each blink plus the chips are arranged weird so they reflect differently in each housing making it appear you have 4 slightly different bulbs. Doubt it's noticeable in real time because only one side is on at a time but I have OCD and I knew it was different! Oppulite worked, were quiet, and cheaper but not nearly enough light output for me. Lasfit T3 were in the middle of brightness level and worked but I think I just got bad bulbs. 3 of 4 started hyper flashing not long after putting them in. Pretty sure the resistors went out but they refunded me. Oh Lasfit does have a really good base of bulb though, they click into the sockets and won't fall out. These Auxito are safe from falling out too, these aren't heavy like some others. Evntyps bulbs somehow are barely brighter than Lasfit and that surprised me because they have 28 more chips. Alla Lighting bulbs were the least compatible with this car. Super loose in the front but did fit snug in the rear w21w socket. Light output wasn't anything special plus they changed from the bubble chips they used to use to flat chips. I do recommend either of these Auxito bulbs even though I think the dual function ones are better in this car and I do hope they make one with the same intensity that also shines further. Hope this helps people and thank you.

Great idea. Poor execution. It is June 21st 2025. I purchased these in April 2025 to replace other LED bulbs that required a resistor. I removed the old resistors and bulbs and installed these with built in resistor. Install was easy. 20 minutes on a 13 buick regal GS. SUPER BRIGHT. They worked great with no hyper flash for about 3 days. Then they decided to hyper flash intermittently. No rhyme or reason. Sometimes switching back and forth between hyper and regular flash during the course of a few minutes while sitting at a red light. Although they still worked, the hyper flash / regular flash back and forth was at the very least, irritating, annoying and distracting and definitely a cop magnet. Because you wonder....ARE THEY EVEN WORKING AND WHY ARE THEY FLASHING SLOW THEN FAST THEN SLOW? 60 days in now. LED Failure in one bulb already. Only half the LEDS light up anymore so one tail lamp is half as bright as the other. Again, frustrating, annoying and a cop magnet. I purchased another set today @ another $40usd. If these last for a year(which i think for the money one year seems reasonable)? I'll edit my review. If they don't last I'll know it's a bad product overall and go back to the resistor set up.

Update 7/1/26: Seller sent 2 replacement bulbs. Installed 1; looks good. I will revisit this after 15 months and increase stars if it holds up. I purchased a pair of 921 led bulbs 2/26/25, 16 months ago. The bulbs were very bright and made it easier to salt back up. However, I bulb became very dim. When I checked it, only 3 of the led elements were working. I sent a message to AUKKITO through Amazon but received no response. You should be able to expect years of service from LEDs. Very disappointed. I have ordered other brands of led bulbs going back to 2017. Only 1 other brand failed, but at least they lasted almost 10 years. AUXITO does not deserve even the 1 star I had to select. I do not recommend this product or this brand. 6/22/26 seller responded to my warranty question and explained the product only had a1-year warranty. They offered a15% discount if I purchased a replacement from them. I declined. Why would I want to spend that much for a bulb that only lasts a little over a year?

Purchased the on December 3, 2025 and one of them has failed already. The contact wire that comes out of the bulb looks like the spot weld internal to the bulb failed. They are nice and bright and work fine with no CANbus errors, but seem too not be built for long term reliability.

I'm writing this review on 6/16/2026, and I'm disappointed to say that these only lasted 16 months. I purchased them on 3/2/2025, and initially, they functioned perfectly, providing super bright light that made passing cars aware of me reversing. Unfortunately, both sets started flickering, and troubleshooting didn't resolve the issue.

Lights are BRIGHT, much lighter than stock which is immensely helpful on rural roads with minimal surrounding lighting. Now this is very much a “get what you paid for” situation, paid about $13 including tax for this set including using a coupon. Quality is GREAT, can’t say that enough. However I bought this exact same set in 2022 almost exactly a year later they went out, bought a second set so 2023, and now 2 years later I’m on my third. I love them so as long as I get another 1-2 years out of these I will buy them again, especially for the price. If you expect longer than that might want to look elsewhere. Only reason for losing a star was how long they last. Update April 27: I purchased my 3rd set of these back in February and as noted above was fine with getting 1-2 of life out of them for the price, however this third set lasted less than 2 months. Can’t say they were bad out of the box because they worked great, but quality has gone downhill. Dropping from 4 to 1 star, and of course right outside of return window.

These bulbs were easy to install and fit perfectly (good compatibility and size). The color is nice—bright white and a big upgrade over stock halogen reverse lights. Appearance-wise they look clean and modern, no complaints there. However, the quality has been disappointing. I bought these on January 9, 2025, and I’ve already had reliability issues. I had to replace two bulbs just a couple months ago, and now all of them need to be replaced again. That’s way sooner than expected for LED bulbs. Polarization wasn’t an issue for me—they worked right away without needing to flip them—but the short lifespan is a big downside. Overall, they perform well in brightness and look great, but durability is lacking. I’d only recommend if you don’t mind replacing them more often than expected.

Extremely bright and look great however after just a month of use the right bulb went out. The fan stopped spinning and burned up the blinker function.

Love it , very bright! Looks good. Installed it yesterday, still need to try it on for the rest of the time.

Fits perfectly and the visibility is also good compared to a stock (halogen) bulb

Aluzan muy bien y de fácil instalación

Works great in my 1997 f150. Nice and bright, no hyper flash issues at all. Only built in resistor turn signals that have worked with no hyper flash for me.

Extra bright