42mm 578 Led Bulb

​The Serundo 31mm LED Festoon is the perfect way to ditch those dim, yellowish factory bulbs. It’s a tiny change that makes a huge difference in visibility and style. ​The Best Parts: ​Crisp Lighting: The 6000K white light makes the interior look modern and much cleaner than halogens. ​Perfect Fit: At exactly 31mm (1.22in), it snapped right into the housing with no rattling or loose connections. ​Powerful Output: It’s bright enough to actually find things on the floor at night without being blinding. ​Solid Build: The heat sink design feels durable, and I haven't noticed any flickering or "ghosting." ​Bottom Line: An affordable, 5-minute install that completely refreshes your car’s interior. Definitely worth it!

Install was very easy. They replaced my old bulbs just fine and are very bright.

These bulbs are awesome! They are really bright! Not like the bulbs that come with most cars. If you go out at at night a lot or just want a brighter interior light these are worth it!

Bight clean white light much brighter then incandescent, but short live span, have already had to replace, after 52 months. Perhaps a trade off for the being brighter.

So nice I bought them twice. I bought these months ago for a toyota pickup I have. They didn't quite fit (not the products fault, I got the wrong length bulb). I took a file and ground down the ends to make them fit. It still works fine and hasn't quit. I use the truck exclusively offroad and I've hit every bump, pothole, and hill. Its so bright I think you could use them to operate on someone in your front seat. I figured if I filed on them and bounced the truck over everything you can think of and they worked fine they must be good. I was needing to replace the interior bulbs in my 2014 Nissan Frontier (these were the proper fit without needing to file them). I was one bulb short to finish out the truck so I bought a second pack. When I open the doors it looks like a space ship landed. They are insanely bright.

Used these in my 05 Subaru outback. Nice white light brightened up my while interior at night when opening the door.

These are a perfect fit for a 2003 Jeep Wrangler (Rubicon) with the lights in the roll bar sound bar, not for the earlier models where the dome light is integral with the hardtop. Lighting was dramatically improved over the factory bulbs, you won't regret it.

I have used LED's as replacements bulbs in numerous vehicles or boats. Yes, they are bright and use less power but come across the same issue with all I have used. Either the end barrels are too small in diameter so you need to "bend" the fingers so the led will touch and work or the LED's are too long by a fraction and cause that kind of issue. Ended up filing the tips down a fraction to fit. Knowing full well what I was buying as it states the diameter of the end barrel is .330 inch and I need a minimum of .360 inch. You wouldn't think that is much to be concerned about but it is. The LED almost falls out of the light socket "fingers". I had to "bend" the light socket "fingers" to have enough tension to hold the LED so it would work. It isn't the correct way to do it but I knew that when I ordered them. I used this on a 2002 chevy suburban engine hood light.

Mucho mejor

rubbish

Extremely bright LED Bulb, so bright it's blinding. I installed these in my 2018 Dodge Challenger interior lights and I had to squeeze the contacts a bit, because these bulbs are slightly thinner than the original ones. No polarity issues, works great.

So…..LED is super bright. But to function properly as a dome light in my 2007 Dodge Ram 1500 I had to add a resistor due to flickering without. Fortunately there was enough room opposite side of connector to accommodate resistor. This was an extra I purchased for another project so size wise it’s a little overkill. I used an 8ohm resistor similar to: https://www.amazon.ca/4Pcs-Aaron-6ohm-Load-Resistors/dp/B00L4V9ECY/ref=mp_s_a_1_2_sspa?crid=1ILYY6EAO8TXH&keywords=led+load+resistor&qid=1642730741&sprefix=led+load+res%2Caps%2C154&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzQVU3TktZQVVHR1RXJmVuY3J5cHRlZElkPUEwNjkwMDg2M000TDNRR0I0N05QTyZlbmNyeXB0ZWRBZElkPUEwOTgzODc1M0VKTklVM0xYUjBETyZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

as described