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🚗 Light up your drive with LASFIT’s ultra-bright, error-free switchback LEDs!
The LASFIT 3157 Switchback LED Bulb delivers 500% brighter amber turn signals and white DRL/parking lights with a built-in CANBUS resistor to prevent error codes and hyper flash on 99% of vehicles. Designed with advanced heat dissipation and a 30,000-hour lifespan, these bulbs offer easy 5-minute installation in standard sockets, combining durability, style, and flawless performance for a safer, more noticeable drive.

















| ASIN | B082QNGXV3 |
| Auto Part Position | Front |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #309 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Turn Signal Bulbs |
| Brand | LASFIT |
| Brand Name | LASFIT |
| Brightness | 4000 lm |
| Bulb Shape Size | T3 |
| Color | Amber/White |
| Color Temperature | 3000 Kelvin |
| Customer Reviews | 4.5 out of 5 stars 7,552 Reviews |
| Fit Type | Universal Fit |
| Included Components | 2* 3157 LED Bulb Switchback |
| Item Highlight | White & Amber 4000lm/set. 500% brighter than halogen. Front turn signal DRL parking light. For standard socket only. |
| Light Output Maximum | 4000 lumens |
| Light Source Type | LED |
| Manufacturer | LASFIT |
| Manufacturer Part Number | TSR-3157D-SW |
| Manufacturer Warranty Description | 1 year |
| Model Number | TSR-3157D-Y/W |
| Number of Items | 2 |
| OEM Equivalent Part Number | 3157 4157 3057 |
| Operating Life | 30000 hours |
| Package Quantity | 1 |
| Specific Uses For Product | Front Turn Singal Light |
| UPC | 810038820439 |
| Unit Count | 2 Count |
| Voltage | 12 volts |
| Wattage | 48 watts |
T**G
Huge Improvement!
Great bulbs. Easy to install, perfect fit, and way brighter than factory halogen. Will make a huge difference with my backup camera.
M**O
Good bulbs
Been using these for a couple of months. They have been bright, no fast blinking, and a perfect fit for my 2014 cascadia. If it doesn’t last a year I’ll lower my stars.
K**R
Best Upgrade
Absolutely amazing! Makes a huge difference, inside and outside. Inside by seeing more clearly on the screen when in reverse. It lights up so much more, you can see further. Outside because even in the day time it's way brighter to get people's attention. Ive been buying lights from this company for awhile and they never let me down.
L**E
Watch one of the videos out there: makes removing tail light assembly easy.
These are awesome! Incredible white, bright back up lights. General Motors should be ashamed of the process involved to remove the rear tail light fixtures, I strongly urge you to seek out one of the excellent You Tube videos. They make the process quite a bit easier and believe me: it is worth the twenty minutes to have backing up so much safer.
M**3
Works perfectly for my 2020 RAM 1500 classic truck
Good and bright replacement for the center brake light on my 2020 RAM 1500 classic truck. Easy installation, it fit perfectly and is a bright red LED light.
J**5
No more trying to see in the dark.
It's like night and day. I had these on my old Rav4 and I guess I got used to them. I tired backing up at night and nearly went off the driveway. Great quality product that is very bright without the flickering nor any extra wiring. Compatible with almost any car or truck.
J**U
Not bad
These are very bright, and they do include an internal resistor. Those benefits earn it 2 stars. Unfortunately, the internal resistors do not prevent them from hyperflashing entirely, so I believe that the resitor has too low of a value. What happens is this: it flashes normally for 20-30 seconds, and then begins hyper-flashing. When I turn on the turn signal, it flashes normally for a short while. If I use the lane-change setting for the turn signal that flashes 4 times and stops, all is fine. If I turn on the turn signal as I'm approaching an intersection, and I complete the turn right away, all is fine. If I pull up to a stop light and I'm sitting for 30+ seconds, the flashing becomes erratic - sometimes hyper-flash, sometimes not. The flashing is all over the place at this point. If I turn it off and then turn it right back on, it's still flashing erratically. If I turn it off for a few minutes, it goes back to normal for short uses. Since the hyper-flashing occurs on both the left and right signals, it tells me that it's a design flaw. I suggest trying a different manufacturer. EDIT: The manufacturer was very gracious and contacted me. I should note that I have used Lasfit LED lights elsewhere in my vehicles and the others function great. It's just the turn signals in my truck where they have a problem. 2nd EDIT: It's very difficult to find this bulb in red, with a built-in resistor. In fact, it's the only one I could find. Since I still needed it, I left it installed and then added a second resistor to it. I added the Sylvania 27 watt (https://www.amazon.com/dp/B01A77U122 ) and have not had any problems since then. My advice is if you need a red T15/912, order this and see if the resistor is enough for your vehicle. If so, great! If not, you can add a resistor and it should work fine.
Y**M
The well thought through engineering and function of these bulbs is astonishing.
I've just installed the LASFIT T3 Series 7443 / 7444NA Switchback LED Bulbs and the difference from factory bulbs to LED bulbs is astounding. Upon first inspection of the bulbs, I found them to be engineered to last, from the ceramic head over the silent cooling fan to maintain a healthy operating temperature for longevity, the fastening of the four LED boards surrounding the bulb body consisting of 5 LED's each, and to the base. I'm not anticipating any issues as it seems to be well thought through from an engineering stand point. This is my first purchase from LASFIT, and I'm impressed. The packaging was minimal but sufficient, and delivery was the same day. Hey LASFIT, great job designing these bulbs. Thank you LASFIT. Personally, I'm still waiting for someone, HINT HINT, to incorporate a Peltier tile into the LED housing for active cooling along with a fan. That will cool things off and maintain them at a healthy and stable temperature, and possibly extend the life even farther. I've included several close up pictures and video footage of the installation in order for you to somewhat see how huge of a difference these play. My apology's for the video quality; I recorded it in 8k, but for some reason beyond my amateur videography skills and knowledge it gets pixelated in the video after I combined all of it into one video. Never the less, it still delivers a representation of the difference. The drivers side (US) is the LED, and the passenger side is the factory bulb (non-LED). I have NO cons about these, and I will update my review if any negative issues develop. As it stands at the time of installation (5-10-26), I highly recommend these bulbs for anyone wanting to be more visible during night time driving. Lastly, while the white running lights are bright, I don't believe they're too bright to cause any issues with oncoming traffic.
R**A
Not compatible with Audi Q7 4M
Not compatible with Audi Q7 4M
M**I
Good quality
Good quality
M**T
opinion
Produit fantastique et fonctionne a merveille
J**N
Mixed feelings/review
Had switchback bulbs that lasted just over a year. Frustrating at 100.00 but I liked them so I decided id give them another shot. Ordered from here again. Labeled switchbacks. We're Amber's. Frustrating again. Installed them because I need signals that work at this point. So I guess I'm saying mixed reviews. The bulbs work great. Both the switchbacks and this amber set I didn't technically order. Longevity of the first set was not great. Jury's out on this new one. Keep it mind when you spend near 100 for bulbs. Update I have changed my review to 5 stars because lasfit reached out to me after posting a 3 star with the above and offered a partial refund for the headache. Rare these days that a company stands behind their mistakes/products for that I felt they deserve the 5.
H**L
Mejor Led para direccionales en Honda CR-V 2023-2026
Compré esta bombilla led, que se instaló en CR-V 2023. Me encantó. La luz que otorga,es brillante, pienso que quizás brilla mucho, en fin, la seguridad es primero. Feliz con esta compra. El vendedor envió en tiempo y forma, en realidad, llegó más rápido de lo previsto. 5 estrellas 🌟 ✨️ a este producto. No marca errores en el tablero, y es la mejor opción para Honda CR-V, corroborado en Amazon y en Gemini IA.
Trustpilot
2 days ago
2 weeks ago