Summers22

iTrader: (2)

Here is my review of Lasfit T3 Series 3157A led bulbs. I was given a set of these bulbs for free, in exchange for a honest review. First off, these are installed in my 2019 F250, in place of 4257 amber bulbs. A slight modification was needed by trimming a tab off each bulb base. Do so at your own risk....

Link to product being reviewed: https://www.lasfit.com/products/3157...ulbs-t3-series

These bulbs are HEAVY in hand, seem to be very well made with a large white heatsink as the "cap" of the bulb. Running light brightness is about the same as the halogens, but blinker function is easily 5 times brighter. I personally like the LED bulbs from other manufacturers such as @Diode Dynamics that have 3 diodes behind a domed glass cap on the end, as they seem to be much brighter than this style. The only downside to these bulbs is that they are polarity specific, I had to turn both around to get them to work, in this day and age, you would think they would have this figured out. At a price point of $59.99, compared to Diode Dynamics bulbs at the same price, I would opt for Diode Dynamics, simply for the warranty. Lasfit has a 1 year warranty and Diode Dynamics is a 3 year warranty. Of course, these were not tested against Diode Dynamics as I don't have a pair of these in hand, but past experiences with Diode Dynamics have led me to believe that Diode Dynamics is a superior LED small bulb compared to many brands, other than my favorites of Putco Lumacore, Sylvania ZEVO and Philips Ultinon. We will see how these holdup with time.


Nicely packaged! Very heavy!

They say no-polarity, this is incorrect. I had to rotate both to get them to work.

Halogen bulb, the ole egg yolk look

Egg yolk look gone!

Halogen left vs Lasfit right running light

Halogen left vs Lasfit right blinker, much brighter!

2008__XL

They also sent me these to review. 7443 amber. Just arrived today. I will test and review them in the next few days.

The comparison shot looks promising.

Summers22

iTrader: (2)

Definitely much brighter than halogen with the blinker, literally the same while running light mode. Irks me that the packaging says "no polarity", yet they are polarity sensitive.

artsr2002

I agree with the polarity issue. I ordered some lasfit bulbs, they arrived beat to hell so they sent me replacements. I had to turn the bulbs after installing them to work. A week later they started pulsing during running light mode. I have my turn signals set as DRLs. I emailed them and they offered to send me the upgraded T3s for free. Again I had to flip the bulbs to get them to work and so far they are working properly. They are bright and look good. We'll see how long they last.