Abstract: An intake manifold assembly for an internal combustion engine that has a modular construction and includes a base member, a runner, and a shell, wherein the base member removably attaches to the engine, and the runner and the shell each separately and independently removably attach to the base member. In another aspect, the assembly further includes a fastener for attaching the runner to the base member, wherein the shell is formed so as to retain the fastener between the shell and the base member when the shell is attached to the base member. In another aspect, the assembly further includes a bumper affixed to a surface of the base member, wherein the bumper abuts a surface of the internal combustion engine. In another aspect, the base member includes a sealing ridge that mates with a sealing groove provided on the shell.