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The PETERSON 421-18 is a black oval replacement reflector lens designed for surface-mount trailer and vehicle lighting applications. Measuring 6.5 inches long by 2.25 inches wide with an overall thickness of 1.62 inches, this reflector uses a 4-hole surface mount pattern for secure installation. It is constructed from a combination of rubber, plastic, and steel, giving it durability across typical road and weather conditions. Licensed technicians and fleet maintenance professionals install this type of reflector as a direct OEM-style replacement to maintain DOT-required visibility compliance on trailers, trucks, and commercial vehicles.
This reflector is suited for surface-mount installations on trailer bodies, utility bodies, and commercial vehicle rear or side panels. Its oval shape and black lens are common in standard trailer lighting configurations. The 4-hole mounting pattern allows for straightforward drop-in replacement without modification. Fleet service shops, trailer dealers, and electrical contractors working in the commercial vehicle segment will find this a routine service item.
Designed as an OEM-style replacement reflector lens for surface-mount trailer and commercial vehicle lighting assemblies requiring an oval 6.5 inch x 2.25 inch black lens with a 4-hole mounting pattern.
Installation is typically performed by fleet electricians or trailer service technicians. Remove any existing fasteners and clean the mounting surface before fitting the new reflector. Ensure the 4 mounting holes align with the existing panel holes before securing to avoid stress cracking the lens housing. Follow applicable FMCSA and vehicle lighting regulations when replacing reflective devices on commercial vehicles.
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