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Integrated Gray Flange Mount: Features a built-in, rigid gray polycarbonate flange with three pre-drilled hardware channels for a direct, ultra-secure surface installation onto walls or ceilings.
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Vibration-Welded / Sonically Sealed Body: The premium clear polycarbonate lens, housing, and flange plate are fused together into a single component, ensuring maximum structural integrity.
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Vibration-Dampening Shock Mount: Specialized elastomeric internal bulb cradle isolates the incandescent filament from heavy vehicle chassis shaking, preventing premature failure.
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Industry-Standard PL-2 Connection: Built with an integrated 2-pin PL-2 socket on the rear of the housing for fast, plug-and-play connection with standard right-angle or straight pigtail harnesses (harnesses sold separately).
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Future-Proof Upgrade Path: Shares standard 4-inch industry dimensions, allowing for an effortless, drop-in future upgrade to energy-efficient LED systems using Truck-Lite’s Super 44 Series products.
Truck-Lite 40223 – 40 Series 4" Round Clear Sealed Incandescent Interior Dome Light (Gray Flange Mount, PL-2 Connection, 12V)
Restore pristine, high-output interior lighting to your commercial cab, sleeper compartment, cargo bay, or utility workspace with the professional-grade Truck-Lite 40223 40 Series Dome Light. Engineered as a rugged, direct-replacement surface unit, this 4-inch round clear sealed interior light comes factory-integrated into a durable gray mounting flange, making it an industry-standard choice for commercial semi-trucks, box vans, delivery vehicles, and vocational utility service bodies.
Built to effortlessly withstand the relentless chassis vibrations of heavy-duty hauling, the Truck-Lite 40223 features a high-impact polycarbonate lens and housing that are permanently vibration-welded (sonically sealed) directly to its structural gray flange. This single-piece design creates an airtight barrier that locks out fine cargo dust, moisture, and debris. Inside, the high-powered single incandescent bulb is suspended in a specialized internal shock mount that actively cushions the filament against rough road impacts and pothole shocks, drastically extending bulb life and reducing fleet maintenance downtime.