Assembly for motor vehicle chassis with dual heat shields

The invention relates mainly to an assembly (1) for an automobile vehicle chassis comprising a vehicle floor (2) under which is mounted an exhaust line (3), a first heat protection screen (10), called main screen, positioned along said exhaust line (3), and a measurement probe (13), characterized in that said main screen (10) being perforated, the assembly further comprises a second heat protection screen (11), called secondary screen, fixed by said measurement probe on said exhaust line (3), said secondary screen (11) coming into overlap with said main screen (10) so as to protect said floor (2) with respect to radiations emitted by said exhaust line (3).