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Uniquely Designed Shock-Mount: Internal bulb shock-mounting shields the dual-filament incandescent bulb from severe road vibration, extending runtime and reducing fleet maintenance.
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Permanently Affixed Gray Flange: The built-in gray ABS plastic flange is molded directly to the lamp housing, providing an all-in-one surface-mounting solution that guards against theft.
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Premium Super 40 Engineering: Upgraded commercial-grade design backed by an extended 3-year manufacturer warranty for maximum fleet reliability.
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Hermetically Sealed Design: A robust polycarbonate lens and housing are sonically welded together, locking out moisture, dust, dirt, and corrosive road spray.
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Dual-Function Performance: Functions seamlessly as both a lower-intensity parking/marker light and a high-intensity front turn indicator signal.
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Standard PL-3 Socket: Features a standard 3-prong female PL-3 pigtail interface on the back for plug-and-play wiring (compatible with Truck-Lite 94993 or similar 3-wire harnesses).
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Fully Safety Certified: Meets or exceeds FMVSS 108, CMVSS 108, DOT, and SAE standards (marked I6, P, P2) for legal commercial highway application.
Truck-Lite 40258Y Super 40 Incandescent Yellow 4" Round Front/Park/Turn Signal Light (12V, Gray ABS Flange Mount, PL-3 Connection, Sealed Lamp)
Equip your commercial vehicle's front end with the premium, theft-resistant Truck-Lite 40258Y Super 40 Series Front/Park/Turn Signal Light. This 4-inch round, yellow (amber) incandescent lamp is engineered specifically for heavy-duty fleet trucks, vocational vehicles, and trailers. It features Truck-Lite’s legendary uniquely designed shock-mount technology, which isolates and cushions the dual-filament bulb from harsh road vibrations and chassis shocks to extend its operational life.
Rather than relying on an external rubber push-in grommet, the Truck-Lite 40258Y is built with a permanently integrated, high-impact gray ABS plastic flange. This heavy-duty structural design allows you to flush-mount the light assembly directly onto your vehicle's panel cutout via a secure surface-screw application. This eliminates the need for separate rubber components and helps prevent theft or accidental blowouts on the highway. Sonically sealed and 100% watertight, this premium 12V lamp utilizes an industry-standard PL-3 connection and is backed by an extended 3-year manufacturer warranty.
Interchange Part Numbers: TL40258Y, TL-40258Y, TRU40258Y, LIT40258Y, TK40258Y
Truck-Lite alternative options: 40258R (Red gray flange version), 40242Y (Standard grommet-mount Super 40 version), 40202Y (Standard 40 series version)