Abstract: A cooling manifold for an electric machine is proposed with a hollow bolt feed solution that takes advantage of an existing bolt structure and interface to a housing of the electric machine to create a fluid passage for routing coolant to internal portions of a stator of the electric machine. The hollow bolt creates a sealed fluid interface without the need to add an additional seal, thereby reducing manufacturing complexity of the electric machine. In-slot cooling with the manifold, or with a plurality of the manifolds, may eliminate a reliance on slot liners and varnish for limiting relative motion of end windings of the stator and providing electrical isolation, while also cooling the hottest part of the electric machine, significantly influencing the machine's thermally limited capability.