I have tested a LOT of LED back-up bulbs on my car including Diode Dynamics, LASFIT, SuperBrightLEDs, Alla, etc... and these are simply the BEST ones ever made.
7440 for Pre 2024
921 for 2024+ (MAY NOT ALLOW COVER TO FIT CLOSED)
These are so far above any other bulb I tested. No other design of 7440 bulb came close. It's like having a set of headlights on the back of your car for backing up - and since I often park in dimly light areas, this is absolutely awesome and gives me confidence when backing up, it also works fantastic for lighting things up on the reverse camera.
Reliability wise, I've had these for a year now and no issues. I waited to post this to ensure they wouldn't die.
They have the LEDs on a thin strip back-to-back chips positioned vertically like headlight replacements, matching filament location. You can see the chips in the reflector beads showing that. The rubber grommet is a little tricky to insert, and you have to make sure you rotate them so the chips are firing out at the 9 and 3 position.
One of the Alla bulbs was similar brightness, but had extremely poor build and design quality and I cannot recommend that bulb and would possibly classify it as dangerous, as many other cheap bulbs are.
No, this isn't a sponsored post. I bought these products with my own money.
7440 for Pre 2024

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921 for 2024+ (MAY NOT ALLOW COVER TO FIT CLOSED)
These are so far above any other bulb I tested. No other design of 7440 bulb came close. It's like having a set of headlights on the back of your car for backing up - and since I often park in dimly light areas, this is absolutely awesome and gives me confidence when backing up, it also works fantastic for lighting things up on the reverse camera.
Reliability wise, I've had these for a year now and no issues. I waited to post this to ensure they wouldn't die.
They have the LEDs on a thin strip back-to-back chips positioned vertically like headlight replacements, matching filament location. You can see the chips in the reflector beads showing that. The rubber grommet is a little tricky to insert, and you have to make sure you rotate them so the chips are firing out at the 9 and 3 position.
One of the Alla bulbs was similar brightness, but had extremely poor build and design quality and I cannot recommend that bulb and would possibly classify it as dangerous, as many other cheap bulbs are.
No, this isn't a sponsored post. I bought these products with my own money.