this appear to be a OEM part . the only difference between it , and its the unit it replace be that it take a minute for the bulb to get to temp and the color to balance out . that might be just I be picky , the fact it be still pretty new , or that it might indeed not be a exact replacement of the original . I like the original . it still function , but its light be pretty dim -lrb- particularly in dark situation with the light in the room on -rrb- so the replacement be nessisary -lrb- I get full life and they some out of the lamp and it still fucntion -rrb- . it will be a emegency backup if something happen to this lamp . I recommend it to anyone with the approprate unit . I have a gt700 optoma -lrb- that I also buy from Amazon -rrb- .