2015-2021 Subaru WRX Knock Sensor Torque Specs

2.0L Turbo H4

Applies to 2015, 2016, 2017, 2018, 2019, 2020, and 2021 Subaru WRX

Labor Time:2 hours

Torque Values (8 specifications)

Component	Nm	lb-ft	Notes
Cover Bolts	16	12	—
Electrical Connector Bolts	7	5	—
⚠️ Gasket Bolts	20	15	—
⚠️ Gasket Surface Bolts	20	15	Clean mating surfaces
⚠️ Knock Sensor	20	15	Torque critical for function
⚠️ Mounting Bolts	47	35	—
Sensor Bolts	11	8	—
Sensor Mounting Bolts	11	8	—

The primary torque specification for knock sensor on a 2015-2021 Subaru WRX is 16 Nm (12 lb-ft).

There are 8 torque specifications for knock sensor on the 2015-2021 Subaru WRX 2.0L Turbo H4, covering all related fasteners and components.