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Total Closed-Back Environmental Defense: Completely encloses the rear of your 2.5" light fixture, acting as a direct shield against under-chassis tire splash, mud, road grit, and chemical washes.
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Dual-Groove Panel Adaptability: Formed with a multi-step groove to cleanly grip narrow vehicle skins down to 0.125" thick or extra-thick plate structures up to 0.250" thick.
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Premium Shock-Dampening Rubber: Heavy-duty black rubber compound isolates your marker lamps from heavy structural chassis vibrations, eliminating premature lighting component blowouts.
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Sleek Flush-Mount Aerodynamics: Mounts perfectly recess-flush into the vehicle panel to create a clean profile that minimizes snag risks from low-hanging branches or loading dock environments.
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PC-Rated Clearance Positioning: Supports strict DOT PC clearance requirements on a 45-degree angle when paired with certified 2.5-inch combination or clearance lamps.
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Direct Legacy Interchange: Engineered as the exact modern fleet replacement or upgrade for legacy Signal-Stat 9119 and 9156 model grommet shapes.
Truck-Lite 10718 10 Series 2-1/2" Closed-Back Heavy-Duty Rubber Grommet – Round Flush Mount for Severe-Duty Trailer Panels
Deliver ultimate shock isolation and rear-plug environmental defense for your vehicle's safety lighting with the rugged Truck-Lite 10718 10 Series Closed-Back Round Rubber Grommet. Precision-engineered to house standard 2-1/2 inch round marker and clearance lamps, this high-performance black rubber mounting ring provides an elite, professional-grade flush-mounted solution for semi-trucks, vocational bodies, and severe-duty commercial trailers.
Molded from premium, weather-resistant industrial rubber, this durable grommet absorbs intense over-the-road chassis shocks and structural vibrations, directly preventing premature bulb filament failure and protecting sensitive LED circuitry. The specialized Dual-Groove Edge Architecture provides excellent mounting versatility, featuring a narrow groove designed to tightly grip standard panels up to 0.125 inches (1/8 inch) thick, alongside a wide groove to securely adapt to heavy-duty sheets up to 0.250 inches (1/4 inch) thick.
Its robust Closed-Back Layout completely covers the rear of the light housing and plug connection. This creates an impermeable physical shield against high-impact tire spray, mud, road salt, and flying rocks—making it the preferred choice for open trailer frame assemblies without a built-in under-chassis mud plate or splash guard.