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Knox Trailers · Electrical & Lighting
3157
In stock · ships from Knoxville
The 3157 bulb is a dual-filament incandescent light bulb commonly used in automotive, heavy-duty truck, and trailer lighting.
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Verify your vehicle's bulb base and function (stop/tail/turn) before ordering. The 3157 is a standard size used on many heavy-duty trucks, trailers, and buses.
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It serves as a combination stop/tail and turn signal bulb, with one filament for the running light and the other for the brighter brake or turn signal. This push-in, wedge-base bulb operates on 12V and is a direct replacement for many vehicles' tail light, brake light, and turn signal assemblies. Replace it when the filament burns out or the bulb becomes dim.
Part Number: 3157
BULB
Unit: ea
Dealer: Knox Trailers
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Parts commonly needed alongside electrical & lighting
