Rear Buckle Removal/Installation: Notes

Switch the ignition off.
Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the rear seat cushion. (See REAR SEAT CUSHION REMOVAL/INSTALLATION .)
Remove the bolts.

Fig 1: Rear Buckle, Rear Center Seat Belt And Bolts With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the rear buckle (RH) and rear buckle (LH).
Install in the reverse order of removal. (See REAR BUCKLE INSTALLATION NOTE .)