Truck-Lite 97804 8.5-Inch Round Black Steel Universal Convex Blind Spot Mirror Assembly (Popular School Bus Head with L-Bracket, Replaces Signal-Stat 7073/7074/7090)

Eliminate dangerous, wide-flank blind spots and ensure total roadside safety with the commercial-grade engineering of the Truck-Lite 97804 8.5-Inch Round Convex Mirror Assembly. Widely relied upon as a popular school bus convex head and a heavy-duty safety upgrade for commercial semi-trucks, vocational dump trucks, and municipal utility vehicles, this premium round spot mirror delivers an extra-large panoramic view of flanking highway lanes. By keeping your drivers continuously aware of immediate wheel-well, pedestrian, and side-clearance hazards, this assembly supports your fleet’s absolute compliance with strict FMVSS 111 highway safety visibility regulations.

Don't gamble with cheap plastic backing shells that crack under extreme weather or scale under high-speed highway wind resistance. The 97804 features a rugged, stamped carbon steel backing housing treated with a premium matte black protective finish. This robust steel construction provides high-impact resistance against flying road gravel, stone chips, and severe chassis vibrations. To guarantee maximum clarity and long-term durability, the premium curved convex glass lens is cushioned within a shock-absorbing vinyl perimeter gasket, creating an airtight barrier against moisture tracking while dampening engine tremors to completely eliminate optical distortion.

Integrating this vital visibility asset into your current layout is quick and stress-free. The mirror assembly utilizes a heavy-duty, center-mounted 5/16-inch female adjustable threaded ball stud (0.313 in. mounting connector diameter). This specialized center-stud orientation allows drivers to pivot and lock in the exact perspective tracking angle required while preventing thread damage under intense vibration load. For maximum convenience, each mirror head includes a bright-plated steel L-bracket right-angle mounting accessory out of the box, making it a perfect field-service update. This mirror head can also be paired with companion mounting kits such as the Truck-Lite 97823 universal kit, 97828 fender-mount bracket, or 97829 tripod assemblies.

This universal side-view mirror acts as an immediate, exact-fit direct field replacement for the legacy Signal-Stat 7073, 7074, and 7090 series, providing transportation systems and private fleets with a reliable drop-in solution to restore frontend visibility.