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Premium TPR Engineering: Crafted from Thermoplastic Rubber (TPR) to withstand extreme chemical exposures, UV rays, and temperature swings while eliminating lens-fogging outgassing.
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Vibration-Dampening Shock Absorbency: Built to isolate your lighting hardware from chassis vibration, heavily extending the lifespan of internal bulbs and circuitry.
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Exact Fit 4.5" Panel Cutout: Designed to seamlessly flush-mount standard 4-inch round signal, tail, brake, and marker lamps into any 4-1/2 inch vehicle panel hole.
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Clean Open-Back Profile: Incorporates a wide-open back format, leaving unobstructed clearance for quick pigtail plugging and effortless wiring harness serviceability.
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Universal 40 & 44 Series Compatibility: Serves as the factory-standard mounting solution for Truck-Lite Super 44, Model 40, and alternative standard 4" round trailer lights.
Truck-Lite 40819 40 & 44 Series 4-Inch Round Open-Back TPR Rubber Light Grommet - 4.5" Mounting Hole
Secure and protect your commercial fleet signaling arrays with the Truck-Lite 40819 40 & 44 Series 4-Inch Round Open-Back Grommet. Engineered from advanced, non-outgassing Thermoplastic Rubber (TPR), this premium mounting grommet allows you to flush-mount any standard 4-inch diameter round lamp into a 4-1/2 inch panel cutout. Providing superior shock absorbency that dampens heavy road vibrations, it actively extends the service life of both incandescent and LED safety lamps in severe over-the-road environments.
Prevent premature lamp failures caused by rigorous road vibrations and rough terrains with the heavy-duty Truck-Lite 40819 40 Series round mounting grommet. Vibration is one of the primary causes of broken bulb filaments and cracked LED solder joints. This premium, open-back rubber grommet acts as a protective cushion, absorbing mechanical shock to safeguard your backend lighting investment.
Unlike cheap standard PVC alternatives that stiffen, crack, or degrade over time, the Truck-Lite 40819 is forged from high-grade Thermoplastic Rubber (TPR). This advanced compound is specifically chemically formulated for extreme environmental applications, maintaining its elastomeric flexibility in freezing temperatures and preventing the chemical outgassing that fogs plastic lenses. Its open-back geometry ensures seamless rear access for standard right-angle PL-3 pigtails and vehicle harnesses. Whether outfitting box trucks, heavy-duty vocational fleets, or commercial utility trailers, this direct-fit component ensures a watertight, flush-mounted seal that looks clean and performs flawlessly.