2017-2024 Audi A4 Knock Sensor Torque Specs

2.0L I4 TFSI

Applies to 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024 Audi A4

Labor Time:2.7 hours

Torque Values (22 specifications)

Component	Nm	lb-ft	Notes
Cover Bolts	16	12	—
Cover Bolts	16	12	—
Cover Bolts	16	12	—
Cover Bolts	16	12	—
Electrical Connector Bolts	7	5	—
Electrical Connector Bolts	7	5	—
⚠️ Gasket Bolts	20	15	—
Gasket Bolts	20	15	—
⚠️ Gasket Surface Bolts	20	15	Clean mating surfaces
Gasket Surface Bolts	20	15	Clean mating surfaces
⚠️ Knock Sensor	20	15	Torque critical for function
Knock Sensor	20	15	Torque critical for function
⚠️ Mounting Bolts	47	35	—
Mounting Bolts	27	20	—
Mounting Bolts	27	20	—
Mounting Bolts	47	35	—
Mounting Bolts	47	35	—
⚠️ Mounting Bolts	47	35	—
Sensor Bolts	11	8	—
Sensor Bolts	11	8	—
Sensor Mounting Bolts	11	8	—
Sensor Mounting Bolts	11	8	—

The primary torque specification for knock sensor on a 2017-2024 Audi A4 is 16 Nm (12 lb-ft).

There are 22 torque specifications for knock sensor on the 2017-2024 Audi A4 2.0L I4 TFSI, covering all related fasteners and components.