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Sonically Sealed Polycarbonate Body: The tough polycarbonate lens and housing are fused together, ensuring maximum resistance to high-pressure chemical washes, heavy downpours, and road grit.
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Vibration-Dampening Shock Mount: Features an internal elastomeric bulb cradle that isolates the incandescent filament from heavy chassis shaking and pothole impacts, drastically extending service life.
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Standard 4-Inch Circular Design: Fits seamlessly into all standard 4-inch industry footprints using standard 40 Series black rubber grommets, brackets, or flanges (sold separately).
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Industry-Standard PL-2 Connection: Built with an integrated 2-pin PL-2 socket on the back of the housing for quick, plug-and-play installation with standard right-angle or straight pigtail harnesses.
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Direct Legacy Fitment: Seamlessly replaces older, worn-out Signal-Stat 4041W and 4047W configurations without modifying your vehicle's structural cutouts.
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Future-Proof Upgrade Path: Shares standard 4-inch spacing, allowing for an effortless, drop-in future upgrade to LED systems utilizing Truck-Lite’s Super 44 Series products.
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Note: This lamp is legal and optimized only for back-up/reverse functions and is not recommended for use as an interior dome lamp.
Truck-Lite 40204 – 40 Series 4" Round Clear Sealed Incandescent Back-Up Reverse Light Head (PL-2 Connection, 12V)
Restore peak rear safety and absolute regulatory compliance to your rig with the Truck-Lite 40204 40 Series Back-Up Light. Engineered as a direct industry-standard replacement lamp, this 4-inch round clear sealed reverse light head provides crisp, high-output illumination that enhances visibility when backing up commercial semi-trucks, box trucks, trailers, vocational vehicles, and heavy-duty fleets.
Built to endure the demanding environments of commercial hauling, the Truck-Lite 40204 features a high-impact polycarbonate lens and housing that are permanently vibration-welded (sonically sealed) together. This airtight, single-piece design creates an impenetrable barrier against dust, moisture, and road spray. Inside, the high-powered single incandescent bulb is suspended in a specialized internal shock mount that actively cushions the filament from severe road jolts and chassis vibration, preventing premature bulb failure and reducing fleet maintenance downtime.