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Shock-Absorbing Cushioning: Rugged black elastomeric compound dampens heavy road impacts, extending the operational life of both incandescent filaments and sensitive LED circuitry.
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Streamlined Recess Mounting: Sits completely flush into standard 3-inch panel cutouts for a sleek, aerodynamic profile that protects lights from tree branches, low overhangs, and loading docks.
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PC-Rated Clearance Alignment: Fully optimized to meet strict DOT PC clearance requirements on a 45-degree angle when paired with certified combination or clearance lamps.
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Variable Surface Flexibility: Precision engineered to adapt and grip sheet metal, aluminum skin, or fiberglass panels up to 0.125" (1/8 inch) in thickness.
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Direct Legacy Interchange: Built as the exact modern fleet replacement for the legacy Signal-Stat 9121 model grommet shape.
Truck-Lite 10704 10 Series 2-1/2" Open-Back Round Black Rubber Grommet – 3" Panel Flush Recess Mount
Securely mount and cushion your exterior vehicle safety lights with the heavy-duty Truck-Lite 10704 10 Series Open-Back Round Black Rubber Grommet. Engineered specifically to house standard 2-1/2 inch round marker and clearance lamps, this high-performance elastomeric grommet provides a professional-grade, flush-mounted finish for semi-trucks, box trailers, utility vehicles, and heavy-duty chassis.
Molded from premium, weather-resistant black rubber/elastomeric PVC compound, this rugged mounting ring absorbs intense over-the-road chassis shocks and structural vibrations, directly preventing premature bulb failure and housing fractures. Its specialized Open-Back Geometry ensures unhindered access to the rear electrical ports, enabling seamless integration with straight or right-angle wiring harnesses. Designed to snap into a standard 3-inch panel cutout, it provides an immediate weather-tight grip on mounting surfaces up to 0.125 inches thick.