Are 3157 bulbs the same as 4157?

The bulb is a standard 4157 Sylvania amber glass bulb. I check three auto stores and nobody has the 4157, and all counter-jockeys say, “that’s a very common bulb, we should have it in stock.” But they don’t. The 3157 bulb says it “also fits” the 4157 application. Here’s the deal, it does, but not exactly.

How does a 3157 bulb work?

The 3157 is a dual contact (d.c.) bulb (Conventional 3157 Led Bulb shown left). The dual contacts are connected to 2 separate circuits inside the bulb. One circuit is for bright or high beam (braking/turn signals) and one for dim or low beam (running/parking lights).

What is the difference between 3157 and 3157CK?

LED bulbs that are 3157 and are connected into 3157CK socket will damage the 3157 LED bulb. So this is why it is important to connect a 3157CK LED only bulb into the 3157CK wire socket.

What vehicles have CK sockets?

Lasfit Vehicles Lists for CK Specific Sockets

What does CK mean cars?

Car, Motor, Quality. Htr. Heater. Automobile, Automotive, Technology. Share CK Auto Abbreviation page.

What is CK style wiring?

A CK/SRCK is like the traditional sockets you see in most Japanese, and American vehicles except it’s wired like this: These 2 types of wiring configurations can be found on 3157 or 7443 types of bulbs. The bulbs and the sockets look identical ” the only way to know the different is to test with a multimeter!

What vehicles does a Sylvania 3157 bulb fit?

Will a 3157 bulb fit a 3057? 3157 LED Bulbs: Replaces all 3056, 3156, 3356, 3456 and 3457 bulbs.

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