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In 1999 Injen designed the first urethane filter with a built in velocity stack for added performance. The Injen Technology Research and Development Team calculates each filters mesh and pleat count for each specific application during the development stages. The Injen cotton gauze element allows cleaning and durability for 1000's of miles to come.

This is a black 3.50" filter with dimensions of 6.75" base/5" tall/5"top.