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Optronics · Electrical & Lighting
STL43RB
In stock · ships from Knoxville
This is a red 4-inch round LED stop/turn/tail light designed for heavy-duty trucks, trailers, and shuttle buses.
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Requires a 4.5-inch grommet and a PL-3 pigtail (sold separately). Works on 12V DC systems.
Part data verified against 4 catalog sources
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It combines brake, turn signal, and tail light functions in one sonically sealed, waterproof polycarbonate housing that resists weather and vibration. The 10-diode array provides bright, wide-angle light and mounts with a standard 4.5-inch grommet (sold separately). You typically replace it when the light is cracked, moisture has entered, or diodes have failed.
Part Number: STL43RB
LED LIGHT 4 RND 10 DIODE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting