T3 Series Switchback LED 4257 Bulbs – Turn Signal Light with Can-Bus Decoder

Lasfit best error free and anti hyper flash 4257 turn signal lights

Lasfit best error free and anti hyper flash 4257 turn signal lights

Lasfit T3 series 4257 turn signal light bulbs with built-in canbus decoder

Lasfit T3 series 4257 turn signal light bulbs with built-in canbus decoder

Lasfit bright 4257 led turn signal light bulbs

Lasfit bright 4257 led turn signal light bulbs

5 mins installation for Lasfit T3 4257 led turn signal bulbs

5 mins installation for Lasfit T3 4257 led turn signal bulbs

durable and stable design for T3 series 4257 led lights

durable and stable design for T3 series 4257 led lights

key features of T3 led turn signal bulbs

key features of T3 led turn signal bulbs

T3 Series Switchback LED 4257 Bulbs – Turn Signal Light with Can-Bus Decoder

Why Do You Need Lasfit Switchback 4257 LED Turn Signal Lights?

In 2025, Lasfit redefines turn signal performance with the T3 LED bulbs. Featuring a built-in CanBus decoder, these bulbs eliminate annoying hyper flash and error codes—no external resistors required. Equipped with high-output 3030 SMD LED chips, the T3 bulbs deliver brightness levels far beyond traditional halogen lights.
What’s more, the switchback function provides a crisp 6000K white for parking lights and a vivid 3000K amber for turn signals—all from a single bulb. It's a smarter, brighter, and safer way to upgrade your vehicle lighting in one simple step.

Key Features of Lasfit Switchback 4257 Turn Signal Bulbs

Error-Free Performance with Built-in Decoder
Tired of hyper flash and dashboard warning lights after installing LED bulbs? The T3 series solves this problem with a ceramic resistor built directly into the bulb, eliminating the need for external resistors. That means easier installation, lower costs, and a cleaner setup—just plug and play.
Ultra-Bright Output with 20 SMD LED Chips
Struggling with dim halogen lights? Each T3 bulb packs 20 high-powered 3030 SMD LEDs and delivers up to 2000 lumens per bulb with a 24W output—providing maximum visibility for safer lane changes and turns, day or night.
Quick, Hassle-Free Installation
Thanks to their compact size and halogen-like dimensions, T3 LED bulbs are a breeze to install. Just twist out your stock halogen bulb, insert the T3 LED bulb, and you're done—no extra resistors, no special tools, and no stress.
Built to Last – Intelligent Cooling System
Durability meets design. T3 bulbs feature a full aluminum body, 8 heat dissipation hole, and a smart temperature control chip to prevent overheating. This advanced thermal management system extends the lifespan of your bulbs, ensuring they stay bright for years of daily driving and adventure.

-Product Spec-

Product: T3-4257D
Package Includes: 2 Bulbs
Fit Size: 4257 / 4257NA / 4257NALL /4 257NAK / 4257A
Installation Position: Front Turn Signal Light
Wattage: 24W/bulb(max)
Lumens: 2000LM/bulb(max)
Color: Bright Amber / White
LED Chips: 20PCS 3030 high-intensity LED Chips(16 PCS for amber color and 4 PCS for white color)
Socket: standard socket

-FAQs: Everything You Need to Know About T3 LED Bulbs-

Q1: What’s the difference between T-Series and T3-Series turn signal lights?

Brightness: T3-Series offers optimized brightness to prevent blinding oncoming drivers.
Decoding: New resistor for longer, more efficient decoding.
Lifespan: T3-Series has a heat filter for better heat dissipation and longer life.
There are more details on the differences between the T series and the T3 series.

4257 LED Bulbs

4257 4257NA CANBUS Error Free LED Turn Signal Light Anti Hyper Flash | Amber Yellow, 2 Bulbs

4257 LED Front Turn Signal Bulbs CanBus-Ready Switchback | T3 Series

4257 LED Turn Signal Bulbs CanBus-Ready Amber | T3 Series