Ford Bronco & F-150/F-250/F-350 No. 4 Frame Crossmember Exploded Diagram

This exploded parts diagram (Ford illustration number N6405-D) shows the No. 4 frame crossmember and reinforcement assemblies for Ford F-Series trucks and the Bronco. The upper portion of the drawing depicts two frame crossmember configurations: one labeled for the F-350 Chassis Cab and F-Super Duty Chassis Cab (callout 1), and another crossmember/reinforcement (callout 6). A center section shows a crossmember arrangement with brackets and fasteners (callouts 2, 3, 4, 4A, 5) labeled for the F-150 (4x2) and F-150 (4x4 with stabilizer bar). Two detail views at the bottom show fastener attachment points where the crossmember meets the frame rail: View A applies to the F-350 (Chassis Cab) with callouts 6, 7, 8, and 9, while View B applies to the F-150, F-250, F-350, and Bronco with callouts 6 and 7. The diagram uses numbered callouts rather than printed part numbers or torque values, so it serves primarily as an assembly/location reference showing how the No. 4 crossmember, reinforcement, brackets, and bolts fit together on the frame for each model variant. No model year is printed on the drawing itself.