Abstract: An optical fiber splicer for use in a splice closure assembly has a base potion with vertical side walls and first and second ends. A plurality of fiber separating fingers are located at the first end with the fingers extending across the width of the base as defined by the side walls. The fingers can be arrayed as a plurality of longitudinally extending tubes, or in a comb-like structure. A core tube insert member has a first portion adapted to be locked to the base portion, and a tube insert portion extends therefrom. A cap member has latch means thereon for latching to the base portion. The entire splitter is preferably made of a clear acrylic plastic material.