CERTAIN UNI-BOND 4″ STOP TAIL TURN LAMPS, P/NOS. SE4000R, SE4042R, AND KT3405R, WITH DATE CODES 4H21B1, 4H22B1, 4H23B1, 4H24BI, 4H25B1, AND 4H25B2 MANUFACTURED BETWEEN AUGUST 21 AND AUGUST 25, 2004, SOLD AS AFTERMARKET EQUIPMENT FOR USE ON HEAVY TRUCKS, TRAILERS, AND BUSES. DUE TO MIS-ALIGNMENT OF THE BULB IN THE BULB HOLDER, LESS THAN OPTIMUM LIGHT IN THE 5 AND 10 DEGREE ZONES IS DELIVERED WHICH FAILS TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, DEFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.