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Dual-Function Performance: Operates reliably as both a side turn signal and an auxiliary marker lamp for complete side-profile visibility.
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Exceeds Safety Standards: Specifically engineered to exceed minimum illumination requirements for mid-trailer turn signal positioning.
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Bulb-Replaceable Economy: Avoid replacing the entire housing; simply swap out the inner incandescent bulb for affordable, efficient maintenance.
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Durable Polycarbonate Build: Tough polycarbonate lens and white housing resist the everyday bumps, vibrations, and severe weather common to logistics hauling.
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Simple 2-Screw Installation: Features a practical surface-mount design using 2 screws for quick, steadfast attachment to truck bodies or trailers.
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Trusted Interchanges: Engineered as a direct drop-in replacement for Navistar #1677711C91 and Grote #52063.
Truck-Lite 4091A – Signal-Stat 2" x 6" Oval Yellow Incandescent Auxiliary Side Turn & Marker Light (12V, 2-Screw Mount, TA-1415)
Maintain strict fleet compliance and high road visibility with the Truck-Lite 4091A Signal-Stat Auxiliary Turn Signal Light. Formatted in a popular 2" x 6" oval profile, this classic yellow (amber) incandescent lamp is engineered to perform dual functions as both a side turn signal and a side marker lamp. It delivers a reliable light pattern that effectively exceeds standard legal requirements for mid-trailer signaling on commercial vehicles, ensuring that changing lanes or turning at long intersections is highly visible to neighboring drivers.
Unlike sealed-unit alternatives, the Truck-Lite 4091A features a highly practical bulb-replaceable design. This allows fleet mechanics, owner-operators, and service technicians to easily service the single internal incandescent bulb when necessary, drastically lowering long-term maintenance costs. Built with a rugged, high-impact polycarbonate lens and white housing, it easily tolerates weather exposure and flying road debris. It connects seamlessly to existing wiring infrastructures using a female TA-1415 lamp connection, and it is a direct manufacturer-approved cross-reference replacement for Navistar part #1677711C91.
Navistar part #1677711C91, Grote #52063