Apr 14, 2020 · Yes, 4257NA bulb is different 3157 LED bulbs or 7443 LED bulbs, it is especially designed for up 2019 Ford F150, F250 Super Duty and F350 Super Duty front turn signal …

Jan 5, 2021 · Front Turn Signal Lights/Parking Lights: 4257NA bulb Front Fog Lights: 9140 bulb Front Side Marker Lights (with halogen capsule headlamps): W5W bulb Rear Exterior Lights: …

Apr 17, 2019 · The front directional/parking light bulb in the owners manual shows a 7444NA bulb. Do a Bing or a Google search and they are all over the place. BUT, when you pull the bulb out …

May 11, 2022 · I'm wanting to upgrade my turn signal and market bulbs in the headlights to LED but I'm finding a lot of conflicting info on which bulbs they are. I found a post on here that says …

i can confirm that an $11.00 set of EBAY 3157 switchbacks fit in my 2019 XL after trimming off the nubs. The 4257NA and 3157 bulbs are the same width on the bases (minus the nubs). Both …

First problem I had was the turn signal bulb socket with the new headlights. It's completely different than the stock 2019 which uses a 4257NA bulb -- which does not fit in here.. And then …

Aug 7, 2020 · KL3Z-13008-B (Ford's latest part numbers when I bought them for my 2019) take a 4257na signal bulb. (Notice the red gasket on the connector on mine) Now the issue seems to …

Jul 23, 2021 · As for the different bulb sockets, I'm not sure. Although I do know they've updated their front turn signal connector from the 7443 version to a 4257na which is causing some …

If anyone knows what bulb goes in the turn signal socket, I'd be very grateful. I suspect it's a wedge bulb of some sort. Or they wanted you to buy their LED turn signal bulbs. EDIT: It …

Nov 19, 2019 · 2015 - 2020 Ford F150 - 2019 F-150's have 2 different size turn signal bulbs - FYI, for people in 2019 F-150's there is actually 2 different turn signal bulb sizes. I got this report …