Truck-Lite 40725 40 Series 4-Inch Round Light Metal Module Bracket Box - Gray Steel (9-Screw Mount)

Upgrade your commercial rear signaling setup with the Truck-Lite 40725 40 Series Metal Module Box. Engineered as a direct replacement for many OEM trailer configurations, this heavy-duty gray steel housing accommodates all standard 4-inch round grommet-mount or flanged-mount lamps. Featuring an integrated red safety reflector, a durable yellow dichromate finish, and a ultra-stable 9-screw bracket mount layout, it offers ultimate backend wiring and housing protection for demanding fleet applications.

Keep your commercial trailers road-legal, visible, and structurally sound with the Truck-Lite 40725 40 Series light module box. This rugged housing acts as an all-in-one protective enclosure and mounting hub for your vehicle's 4" round stop, tail, turn, and backup lights. It is widely relied upon by fleet managers and owner-operators as a drop-in replacement for worn-out factory hardware, including the classic Signal-Stat 9524 assemblies.

Crafted from premium heavy-gauge reinforced steel, this module box features a clean gray exterior coating and a protective yellow dichromate structural finish underneath to shield against rust, salt, and intense road debris. The unique 9-screw bracket configuration ensures maximum surface anchoring, distributing heavy vibrations evenly across the trailer body frame. For added compliance and visibility, each unit arrives equipped with a built-in DOT-compliant red reflector, ensuring your trailer remains highly visible even when the vehicle is parked or powered down.