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The PETERSON 421-09 is a black rectangular reflector and replacement lens designed for surface-mount applications on commercial vehicles, trailers, and related transport equipment. Constructed with a steel, plastic, and rubber composite build, this reflector measures 8.25 inches long by 4 inches wide with an overall thickness of 1.75 inches. Two mounting holes allow for straightforward surface installation. It is intended for use as a direct OEM-style replacement or new-installation reflector where a rectangular black lens is specified. Electrical contractors, fleet maintenance technicians, and trailer service pros typically source this part for DOT-compliant lighting and reflector assemblies.
The 421-09 fits surface-mount installations requiring a rectangular reflector in black. Its 8.25-inch by 4-inch footprint suits standard reflector cutouts and mounting patterns found on trailer rear panels, utility bodies, and commercial vehicle assemblies. The two-hole mounting pattern simplifies alignment during installation. This part ships in a package quantity of one and is subject to California Proposition 65 standards.
Designed as an OEM-style replacement rectangular surface-mount reflector for commercial vehicles, trailers, and utility body applications requiring an 8.25-inch by 4-inch black lens reflector.
Installation is typically performed by fleet maintenance technicians or electricians servicing trailer lighting assemblies. Disconnect vehicle power or isolate the circuit before beginning work. Align the two mounting holes to the existing bracket or panel cutout and secure with appropriate fasteners. Verify the reflector is flush and sealed against the mounting surface to prevent moisture intrusion.
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