Mitsubishi WD-57831 Cage Assembly with High Quality Original Philips Bulb Inside Mitsubishi WD57831 Projection TV Lamp Assembly Replacement TV lamp replacement with OEM bulb manufactured by  Philips, Osram, Ushio or Phoenix High quality compatible housing The OEM bulb is engineered to perform to the exact specifications and requirements for Mitsubishi WD57831 90 Days warranty when purchased from BulbAmerica