Abstract: A flexible header mounting for an engine mounted fuel filter includes structure for dependingly engaging a fuel filter and its associated plumbing and a planar base member by means of which the header is mounted to the engine supporting structure. Flexible engagement of the base member to the engine is accomplished by means of bolts, each of which has a compression spring mounted thereon over the shaft thereof, between the base member and the bolt head. The free threaded end of the bolt extends through a bore drilled into the base member and engages within a threaded bore in the engine housing. The distance between a center point of the bolt and a forward edge of the base plate is as large as possible while the distance between the center point of the bolt and the rear edge is as small as possible, creating a joint wherein the header may pivot rearwardly upon impact but will be unable to pivot forwardly under severe deceleration.