Response to Hi Dennis, Yes the 6004 Fiberstars Illuminator would be the replacement for the 2004 illuminator. We have a new LED Fiber Optic Illuminator which would replace the 2004 illuminator. The LED illuminator would be considered an upgrade as it outputs brighter light, costs less to operate and has a much longer lamp life. You should not need to replace your fiber when replacing your illuminator as the old cable should work.

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