Design of gate location is a crucial factor in achieving product quality in injection moulding. It Influences the manner of plastic flow into the cavity. The optimum gate location improves quality and avoids products defects. This paper presents an investigation for the effects of gate location on product quality in injection moulding. Plastic advisor, simulation software embedded in Pro/Engineer package has been used for flow analysis of plastic product for selected gate locations. It has been shown that optimum gate location improves cooling quality resulting in a better product quality. The previous conventional experiences by individual credited engineers have been considered.