An intercooler configured for attachment to an automobile is disclosed. One embodiment of the invention includes an intercooler body having an inlet manifold on one end and an outlet manifold on the other end, and a decorative top plate on the top of the intercooler attached to the manifolds. The decorative top plate has two holes in it which are both keyed to resist rotation of an insert, a hollow bolt having a stepped formation under the bolt head such that the stepped formation is able to key in the hole cut in the plate, the bolt is inserted through the top of the plate and secured by a nut secured underneath it so that the head of the bolt lies flush against the plate and the stepped formation keys against the hole to prevent rotation. In addition, the bolt is hollow having a threaded passage passing through it to receive another bolt to secure the intercooler to a bracket in the automobile.