Knock Sensor (KS) Removal/Installation

Disconnect the negative battery cable.
Remove the intake manifold bracket.
Remove the KS using the SST (49 H018 001).

Fig 1: Identifying Knock Sensor, Oil Filter & Intake Manifold Bracket
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.
Tightening torque
1. 19.6-34.3 N.m {2.0-3.5 kgf.m, 14.5-25.3 ft.lbf}