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Automann · Electrical & Lighting
571.LG40R
In stock · ships from Knoxville
This is a 4-inch round red incandescent stop/turn/tail light (S/T/T) for heavy-duty trucks and trailers.
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Verified fitment for 5 applications
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All confirmed applications for this part number.
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Other applications
Fits any standard 4-inch rubber grommet opening. Commonly used on both driver and passenger sides. The incandescent version; for an LED alternative see Automann 571.LD40R7.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 4 of 4.
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It provides bright signaling for braking, turning, and nighttime running to keep the vehicle DOT-compliant. The sealed polycarbonate lens and housing protect the heavy-duty bulb from moisture, dust, and road salt, while the integrated PL3 connector allows simple plug-and-play grommet mounting. Replace this lamp when the lens cracks, the bulb burns out, or moisture enters the housing—often done in pairs to maintain uniform brightness.
Part Number: 571.LG40R
S/T/T LIGHT 4'' RED
Unit: ea
Vendor: Automann
Dealer: KP Services Crossville
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Parts commonly needed alongside electrical & lighting
